diff --git a/nifi-assembly/NOTICE b/nifi-assembly/NOTICE
index b62e10a256..ad8350e3c5 100644
--- a/nifi-assembly/NOTICE
+++ b/nifi-assembly/NOTICE
@@ -2257,6 +2257,11 @@ The following binary components are provided under the Apache Software License v
atinject
Copyright
+ (ASLv2) The Dropbox Project
+ The following NOTICE information applies:
+ The Dropbox Project
+ Copyright 2013-2021 Dropbox Inc.
+
************************
Common Development and Distribution License 1.1
************************
diff --git a/nifi-assembly/pom.xml b/nifi-assembly/pom.xml
index a7a351cbcf..2a90a924ac 100644
--- a/nifi-assembly/pom.xml
+++ b/nifi-assembly/pom.xml
@@ -862,6 +862,24 @@ language governing permissions and limitations under the License. -->
1.18.0-SNAPSHOTnar
+
+ org.apache.nifi
+ nifi-dropbox-processors-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+
+ org.apache.nifi
+ nifi-dropbox-services-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api-nar
+ 1.18.0-SNAPSHOT
+ nar
+
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/pom.xml
new file mode 100644
index 0000000000..25c6403cb2
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/pom.xml
@@ -0,0 +1,45 @@
+
+
+
+ 4.0.0
+
+
+ org.apache.nifi
+ nifi-dropbox-bundle
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-processors-nar
+ nar
+
+ true
+ true
+
+
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+
+ org.apache.nifi
+ nifi-dropbox-processors
+ 1.18.0-SNAPSHOT
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/LICENSE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000000..7a4a3ea242
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/NOTICE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000000..e5f54b695d
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors-nar/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,38 @@
+nifi-dropbox-processors-nar
+Copyright 2015-2022 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+******************
+Apache Software License v2
+******************
+
+The following binary components are provided under the Apache Software License v2
+ (ASLv2) The Dropbox Project
+ The following NOTICE information applies:
+ The Dropbox Project
+ Copyright 2013-2021 Dropbox Inc.
+
+ (ASLv2) Jackson JSON processor
+ The following NOTICE information applies:
+ # Jackson JSON processor
+
+ Jackson is a high-performance, Free/Open Source JSON processing library.
+ It was originally written by Tatu Saloranta (tatu.saloranta@iki.fi), and has
+ been in development since 2007.
+ It is currently developed by a community of developers, as well as supported
+ commercially by FasterXML.com.
+
+ ## Licensing
+
+ Jackson core and extension components may licensed under different licenses.
+ To find the details that apply to this artifact see the accompanying LICENSE file.
+ For more information, including possible other licensing options, contact
+ FasterXML.com (http://fasterxml.com).
+
+ ## Credits
+
+ A list of contributors may be found from CREDITS file, which is included
+ in some artifacts (usually source distributions); but is always available
+ from the source code management (SCM) system project uses.
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/pom.xml
new file mode 100644
index 0000000000..2391a78f99
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/pom.xml
@@ -0,0 +1,91 @@
+
+
+
+ 4.0.0
+
+
+ org.apache.nifi
+ nifi-dropbox-bundle
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-processors
+ jar
+
+
+
+ org.apache.nifi
+ nifi-api
+
+
+ org.apache.nifi
+ nifi-utils
+ 1.18.0-SNAPSHOT
+
+
+ org.apache.nifi
+ nifi-record
+
+
+ org.apache.nifi
+ nifi-listed-entity
+ 1.18.0-SNAPSHOT
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api
+ 1.18.0-SNAPSHOT
+ provided
+
+
+ com.dropbox.core
+ dropbox-core-sdk
+ ${dropbox.client.version}
+
+
+ org.apache.nifi
+ nifi-mock
+ test
+
+
+ org.apache.nifi
+ nifi-record-serialization-services
+ 1.18.0-SNAPSHOT
+ test
+
+
+ org.apache.nifi
+ nifi-record-serialization-service-api
+ test
+
+
+ org.apache.nifi
+ nifi-distributed-cache-client-service-api
+ test
+
+
+ org.apache.nifi
+ nifi-schema-registry-service-api
+ test
+
+
+ org.apache.nifi
+ nifi-dropbox-services
+ 1.18.0-SNAPSHOT
+ test
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFileInfo.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFileInfo.java
new file mode 100644
index 0000000000..22eda85a51
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFileInfo.java
@@ -0,0 +1,186 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.processors.dropbox;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import org.apache.nifi.processor.util.list.ListableEntity;
+import org.apache.nifi.serialization.SimpleRecordSchema;
+import org.apache.nifi.serialization.record.MapRecord;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordField;
+import org.apache.nifi.serialization.record.RecordFieldType;
+import org.apache.nifi.serialization.record.RecordSchema;
+
+public class DropboxFileInfo implements ListableEntity {
+
+ public static final String ID = "dropbox.id";
+ public static final String PATH = "path";
+ public static final String FILENAME = "filename";
+ public static final String SIZE = "dropbox.size";
+ public static final String TIMESTAMP = "dropbox.timestamp";
+ public static final String REVISION = "dropbox.revision";
+
+ private static final RecordSchema SCHEMA;
+
+ static {
+ final List recordFields = new ArrayList<>();
+ recordFields.add(new RecordField(ID, RecordFieldType.STRING.getDataType(), false));
+ recordFields.add(new RecordField(PATH, RecordFieldType.STRING.getDataType(), false));
+ recordFields.add(new RecordField(FILENAME, RecordFieldType.STRING.getDataType(), false));
+ recordFields.add(new RecordField(SIZE, RecordFieldType.LONG.getDataType(), false));
+ recordFields.add(new RecordField(TIMESTAMP, RecordFieldType.LONG.getDataType(), false));
+ recordFields.add(new RecordField(REVISION, RecordFieldType.STRING.getDataType(), false));
+
+ SCHEMA = new SimpleRecordSchema(recordFields);
+ }
+
+ public static RecordSchema getRecordSchema() {
+ return SCHEMA;
+ }
+
+ private final String id;
+ private final String path;
+ private final String filename;
+ private final long size;
+ private final long timestamp;
+ private final String revision;
+
+ private DropboxFileInfo(final Builder builder) {
+ this.id = builder.id;
+ this.path = builder.path;
+ this.filename = builder.filename;
+ this.size = builder.size;
+ this.timestamp = builder.timestamp;
+ this.revision = builder.revision;
+ }
+
+ public String getId() {
+ return id;
+ }
+
+ public String getPath() {
+ return path;
+ }
+
+ public String getRevision() {
+ return revision;
+ }
+
+ public String getFileName() {
+ return filename;
+ }
+
+ @Override
+ public Record toRecord() {
+ final Map values = new HashMap<>();
+
+ values.put(ID, getId());
+ values.put(PATH, getPath());
+ values.put(FILENAME, getFileName());
+ values.put(SIZE, getSize());
+ values.put(TIMESTAMP, getTimestamp());
+ values.put(REVISION, getRevision());
+
+ return new MapRecord(SCHEMA, values);
+ }
+
+ @Override
+ public String getName() {
+ return getFileName();
+ }
+
+ @Override
+ public String getIdentifier() {
+ return getId();
+ }
+
+ @Override
+ public long getTimestamp() {
+ return timestamp;
+ }
+
+ @Override
+ public long getSize() {
+ return size;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+ DropboxFileInfo that = (DropboxFileInfo) o;
+ return id.equals(that.id) && size == that.size && timestamp == that.timestamp && path.equals(that.path) && filename.equals(that.filename)
+ && revision.equals(that.revision);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(id, path, filename, size, timestamp, revision);
+ }
+
+ public static final class Builder {
+
+ private String id;
+ private String path;
+ private String filename;
+ private long size;
+ private long timestamp;
+ private String revision;
+
+ public Builder id(String id) {
+ this.id = id;
+ return this;
+ }
+
+ public Builder path(String path) {
+ this.path = path;
+ return this;
+ }
+
+ public Builder name(String filename) {
+ this.filename = filename;
+ return this;
+ }
+
+ public Builder size(long size) {
+ this.size = size;
+ return this;
+ }
+
+ public Builder timestamp(long createdTime) {
+ this.timestamp = createdTime;
+ return this;
+ }
+
+ public Builder revision(String revision) {
+ this.revision = revision;
+ return this;
+ }
+
+ public DropboxFileInfo build() {
+ return new DropboxFileInfo(this);
+ }
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFlowFileAttribute.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFlowFileAttribute.java
new file mode 100644
index 0000000000..0a5898cb2a
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/DropboxFlowFileAttribute.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.processors.dropbox;
+
+import java.util.function.Function;
+
+public enum DropboxFlowFileAttribute {
+ ID(DropboxFileInfo.ID, DropboxFileInfo::getId),
+ PATH(DropboxFileInfo.PATH, DropboxFileInfo::getPath),
+ FILENAME(DropboxFileInfo.FILENAME, DropboxFileInfo::getName),
+ SIZE(DropboxFileInfo.SIZE, fileInfo -> String.valueOf(fileInfo.getSize())),
+ TIMESTAMP(DropboxFileInfo.TIMESTAMP, fileInfo -> String.valueOf(fileInfo.getTimestamp())),
+ REVISION(DropboxFileInfo.REVISION, DropboxFileInfo::getRevision);
+
+ private final String name;
+ private final Function fromFileInfo;
+
+ DropboxFlowFileAttribute(String attributeName, Function fromFileInfo) {
+ this.name = attributeName;
+ this.fromFileInfo = fromFileInfo;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ public String getValue(DropboxFileInfo fileInfo) {
+ return fromFileInfo.apply(fileInfo);
+ }
+
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/ListDropbox.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/ListDropbox.java
new file mode 100644
index 0000000000..2c1b19fe40
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/java/org/apache/nifi/processors/dropbox/ListDropbox.java
@@ -0,0 +1,293 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.processors.dropbox;
+
+import static java.lang.String.format;
+import static java.util.stream.Collectors.toList;
+
+import com.dropbox.core.DbxException;
+import com.dropbox.core.DbxRequestConfig;
+import com.dropbox.core.oauth.DbxCredential;
+import com.dropbox.core.v2.DbxClientV2;
+import com.dropbox.core.v2.files.FileMetadata;
+import com.dropbox.core.v2.files.ListFolderBuilder;
+import com.dropbox.core.v2.files.ListFolderResult;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Predicate;
+import java.util.regex.Pattern;
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.behavior.PrimaryNodeOnly;
+import org.apache.nifi.annotation.behavior.Stateful;
+import org.apache.nifi.annotation.behavior.TriggerSerially;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.state.Scope;
+import org.apache.nifi.context.PropertyContext;
+import org.apache.nifi.dropbox.credentials.service.DropboxCredentialDetails;
+import org.apache.nifi.dropbox.credentials.service.DropboxCredentialService;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.processor.util.list.AbstractListProcessor;
+import org.apache.nifi.processor.util.list.ListedEntityTracker;
+import org.apache.nifi.serialization.record.RecordSchema;
+
+@PrimaryNodeOnly
+@TriggerSerially
+@Tags({"dropbox", "storage"})
+@CapabilityDescription("Retrieves a listing of files from Dropbox (shortcuts are ignored)." +
+ " Each listed file may result in one FlowFile, the metadata being written as Flowfile attributes." +
+ " When the 'Record Writer' property is set, the entire result is written as records to a single FlowFile." +
+ " This Processor is designed to run on Primary Node only in a cluster. If the primary node changes, the new Primary Node will pick up where the" +
+ " previous node left off without duplicating all of the data.")
+@InputRequirement(Requirement.INPUT_FORBIDDEN)
+@WritesAttributes({@WritesAttribute(attribute = DropboxFileInfo.ID, description = "The Dropbox identifier of the file"),
+ @WritesAttribute(attribute = DropboxFileInfo.PATH, description = "The folder path where the file is located"),
+ @WritesAttribute(attribute = DropboxFileInfo.FILENAME, description = "The name of the file"),
+ @WritesAttribute(attribute = DropboxFileInfo.SIZE, description = "The size of the file"),
+ @WritesAttribute(attribute = DropboxFileInfo.TIMESTAMP, description = "The server modified time, when the file was uploaded to Dropbox"),
+ @WritesAttribute(attribute = DropboxFileInfo.REVISION, description = "Revision of the file")})
+@Stateful(scopes = {Scope.CLUSTER}, description = "The processor stores necessary data to be able to keep track what files have been listed already. " +
+ "What exactly needs to be stored depends on the 'Listing Strategy'.")
+public class ListDropbox extends AbstractListProcessor {
+
+ public static final PropertyDescriptor FOLDER = new PropertyDescriptor.Builder()
+ .name("folder")
+ .displayName("Folder")
+ .description("The Dropbox identifier or path of the folder from which to pull list of files." +
+ " 'Folder' should match the following regular expression pattern: /.*|id:.* ." +
+ " Example for folder identifier: id:odTlUvbpIEAAAAAAAAAGGQ." +
+ " Example for folder path: /Team1/Task1.")
+ .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+ .required(true)
+ .addValidator(StandardValidators.createRegexMatchingValidator(Pattern.compile("/.*|id:.*")))
+ .defaultValue("/")
+ .build();
+
+ public static final PropertyDescriptor RECURSIVE_SEARCH = new PropertyDescriptor.Builder()
+ .name("recursive-search")
+ .displayName("Search Recursively")
+ .description("Indicates whether to list files from subfolders of the Dropbox folder.")
+ .required(true)
+ .defaultValue("true")
+ .allowableValues("true", "false")
+ .build();
+
+ public static final PropertyDescriptor MIN_AGE = new PropertyDescriptor.Builder()
+ .name("min-age")
+ .displayName("Minimum File Age")
+ .description("The minimum age a file must be in order to be considered; any files newer than this will be ignored.")
+ .required(true)
+ .addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
+ .defaultValue("0 sec")
+ .build();
+
+ public static final PropertyDescriptor CREDENTIAL_SERVICE = new PropertyDescriptor.Builder()
+ .name("dropbox-credential-service")
+ .displayName("Dropbox Credential Service")
+ .description("Controller Service used to obtain Dropbox credentials (App Key, App Secret, Access Token, Refresh Token)." +
+ " See controller service's Additional Details for more information.")
+ .identifiesControllerService(DropboxCredentialService.class)
+ .required(true)
+ .build();
+
+ public static final PropertyDescriptor LISTING_STRATEGY = new PropertyDescriptor.Builder()
+ .fromPropertyDescriptor(AbstractListProcessor.LISTING_STRATEGY)
+ .allowableValues(BY_TIMESTAMPS, BY_ENTITIES, BY_TIME_WINDOW, NO_TRACKING)
+ .build();
+
+ public static final PropertyDescriptor TRACKING_STATE_CACHE = new PropertyDescriptor.Builder()
+ .fromPropertyDescriptor(ListedEntityTracker.TRACKING_STATE_CACHE)
+ .dependsOn(LISTING_STRATEGY, BY_ENTITIES)
+ .build();
+
+ public static final PropertyDescriptor TRACKING_TIME_WINDOW = new PropertyDescriptor.Builder()
+ .fromPropertyDescriptor(ListedEntityTracker.TRACKING_TIME_WINDOW)
+ .dependsOn(LISTING_STRATEGY, BY_ENTITIES)
+ .build();
+
+ public static final PropertyDescriptor INITIAL_LISTING_TARGET = new PropertyDescriptor.Builder()
+ .fromPropertyDescriptor(ListedEntityTracker.INITIAL_LISTING_TARGET)
+ .dependsOn(LISTING_STRATEGY, BY_ENTITIES)
+ .build();
+
+ private static final List PROPERTIES = Collections.unmodifiableList(Arrays.asList(
+ CREDENTIAL_SERVICE,
+ FOLDER,
+ RECURSIVE_SEARCH,
+ MIN_AGE,
+ LISTING_STRATEGY,
+ TRACKING_STATE_CACHE,
+ TRACKING_TIME_WINDOW,
+ INITIAL_LISTING_TARGET,
+ RECORD_WRITER
+ ));
+
+ private DbxClientV2 dropboxApiClient;
+
+ @OnScheduled
+ public void onScheduled(final ProcessContext context) {
+ dropboxApiClient = getDropboxApiClient(context);
+ }
+
+ @Override
+ protected List getSupportedPropertyDescriptors() {
+ return PROPERTIES;
+ }
+
+ @Override
+ protected Map createAttributes(
+ final DropboxFileInfo entity,
+ final ProcessContext context) {
+ final Map attributes = new HashMap<>();
+
+ for (DropboxFlowFileAttribute attribute : DropboxFlowFileAttribute.values()) {
+ Optional.ofNullable(attribute.getValue(entity))
+ .ifPresent(value -> attributes.put(attribute.getName(), value));
+ }
+
+ return attributes;
+ }
+
+ @Override
+ protected String getPath(final ProcessContext context) {
+ return context.getProperty(FOLDER).evaluateAttributeExpressions().getValue();
+ }
+
+ protected DbxClientV2 getDropboxApiClient(ProcessContext context) {
+ final DropboxCredentialService credentialService = context.getProperty(CREDENTIAL_SERVICE)
+ .asControllerService(DropboxCredentialService.class);
+ DbxRequestConfig config = new DbxRequestConfig(format("%s-%s", getClass().getSimpleName(), getIdentifier()));
+ DropboxCredentialDetails credential = credentialService.getDropboxCredential();
+ return new DbxClientV2(config, new DbxCredential(credential.getAccessToken(), -1L,
+ credential.getRefreshToken(), credential.getAppKey(), credential.getAppSecret()));
+ }
+
+ @Override
+ protected List performListing(ProcessContext context, Long minTimestamp,
+ ListingMode listingMode) throws IOException {
+ final List listing = new ArrayList<>();
+
+ final String folderName = getPath(context);
+ final Boolean recursive = context.getProperty(RECURSIVE_SEARCH).asBoolean();
+ final Long minAge = context.getProperty(MIN_AGE).asTimePeriod(TimeUnit.MILLISECONDS);
+
+ try {
+ Predicate metadataFilter = createMetadataFilter(minTimestamp, minAge);
+
+ ListFolderBuilder listFolderBuilder = dropboxApiClient.files().listFolderBuilder(convertFolderName(folderName));
+ ListFolderResult result = listFolderBuilder
+ .withRecursive(recursive)
+ .start();
+
+ List metadataList = new ArrayList<>(filterMetadata(result, metadataFilter));
+
+ while (result.getHasMore()) {
+ result = dropboxApiClient.files().listFolderContinue(result.getCursor());
+ metadataList.addAll(filterMetadata(result, metadataFilter));
+ }
+
+ for (FileMetadata metadata : metadataList) {
+ DropboxFileInfo.Builder builder = new DropboxFileInfo.Builder()
+ .id(metadata.getId())
+ .path(getParentPath(metadata.getPathDisplay()))
+ .name(metadata.getName())
+ .size(metadata.getSize())
+ .timestamp(metadata.getServerModified().getTime())
+ .revision(metadata.getRev());
+
+ listing.add(builder.build());
+ }
+ } catch (DbxException e) {
+ throw new IOException("Failed to list Dropbox folder [" + folderName + "]", e);
+ }
+
+ return listing;
+ }
+
+ @Override
+ protected boolean isListingResetNecessary(final PropertyDescriptor property) {
+ return LISTING_STRATEGY.equals(property)
+ || FOLDER.equals(property)
+ || RECURSIVE_SEARCH.equals(property);
+ }
+
+ @Override
+ protected Scope getStateScope(final PropertyContext context) {
+ return Scope.CLUSTER;
+ }
+
+ @Override
+ protected RecordSchema getRecordSchema() {
+ return DropboxFileInfo.getRecordSchema();
+ }
+
+ @Override
+ protected Integer countUnfilteredListing(final ProcessContext context) throws IOException {
+ return performListing(context, null, ListingMode.CONFIGURATION_VERIFICATION).size();
+ }
+
+ @Override
+ protected String getListingContainerName(final ProcessContext context) {
+ return format("Dropbox Folder [%s]", getPath(context));
+ }
+
+ private Predicate createMetadataFilter(Long minTimestamp, Long minAge) {
+ Predicate metadataFilter = FileMetadata::getIsDownloadable;
+
+ if (minTimestamp != null && minTimestamp > 0) {
+ metadataFilter = metadataFilter.and(metadata -> metadata.getServerModified().getTime() >= minTimestamp);
+ }
+
+ if (minAge != null && minAge > 0) {
+ long maxTimestamp = System.currentTimeMillis() - minAge;
+ metadataFilter = metadataFilter.and(metadata -> metadata.getServerModified().getTime() < maxTimestamp);
+ }
+ return metadataFilter;
+ }
+
+ private List filterMetadata(ListFolderResult result, Predicate metadataFilter) {
+ return result.getEntries().stream()
+ .filter(metadata -> metadata instanceof FileMetadata)
+ .map(FileMetadata.class::cast)
+ .filter(metadataFilter)
+ .collect(toList());
+ }
+
+ private String getParentPath(String fullPath) {
+ int idx = fullPath.lastIndexOf("/");
+ String parentPath = fullPath.substring(0, idx);
+ return "".equals(parentPath) ? "/" : parentPath;
+ }
+
+ private String convertFolderName(String folderName) {
+ return "/".equals(folderName) ? "" : folderName;
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
new file mode 100644
index 0000000000..ab3ec13b23
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
@@ -0,0 +1,15 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+org.apache.nifi.processors.dropbox.ListDropbox
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/AbstractDropboxIT.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/AbstractDropboxIT.java
new file mode 100644
index 0000000000..346116035a
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/AbstractDropboxIT.java
@@ -0,0 +1,128 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.nifi.processors.dropbox;
+
+import com.dropbox.core.DbxRequestConfig;
+import com.dropbox.core.oauth.DbxCredential;
+import com.dropbox.core.v2.DbxClientV2;
+import com.dropbox.core.v2.files.FileMetadata;
+import com.dropbox.core.v2.files.GetMetadataErrorException;
+import java.io.ByteArrayInputStream;
+import java.nio.charset.StandardCharsets;
+import org.apache.nifi.processor.Processor;
+import org.apache.nifi.services.dropbox.StandardDropboxCredentialService;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+
+/**
+ * Set the following constants before running:
+ * APPLICATION_KEY - App Key of your app
+ * APPLICATION_SECRET - Your App Secret of your app
+ * ACCESS_TOKEN - Access Token generated for your app
+ * REFRESH_TOKEN - Refresh Token generated for your app
+ *
+ * For App Key, App Secret, Access Token and Refresh Token generation please check controller service's Additional Details page.
+ * NOTE: Since the integration test creates the test files you need "files.content.write" permission besides the "files.content.read"
+ * permission mentioned in controller service's Additional Details page.
+ *
+ * Created files and folders are cleaned up, but it's advisable to dedicate a folder for this test so that it can
+ * be cleaned up easily should the test fail to do so.
+ * WARNING: The creation of a file is not a synchronized operation, may need to adjust tests accordingly!
+ */
+public abstract class AbstractDropboxIT {
+
+ public static final String APP_KEY = "";
+ public static final String APP_SECRET = "";
+ public static final String ACCESS_TOKEN = "";
+ public static final String REFRESH_TOKEN = "";
+
+ public static final String MAIN_FOLDER = "/testFolder";
+ protected T testSubject;
+ protected TestRunner testRunner;
+ protected String mainFolderId;
+
+ private DbxClientV2 client;
+
+ @AfterEach
+ public void teardown() throws Exception {
+ deleteFolderIfExists(MAIN_FOLDER);
+ }
+
+ protected abstract T createTestSubject();
+
+ @BeforeEach
+ protected void init() throws Exception {
+ testSubject = createTestSubject();
+ testRunner = createTestRunner();
+ DbxCredential credential =
+ new DbxCredential(ACCESS_TOKEN, -1L, REFRESH_TOKEN, APP_KEY, APP_SECRET);
+ DbxRequestConfig config = new DbxRequestConfig("nifi");
+ client = new DbxClientV2(config, credential);
+ mainFolderId = createFolder(MAIN_FOLDER);
+ }
+
+ protected TestRunner createTestRunner() throws Exception {
+ TestRunner testRunner = TestRunners.newTestRunner(testSubject);
+
+ StandardDropboxCredentialService controllerService = new StandardDropboxCredentialService();
+ testRunner.addControllerService("dropbox_credential_provider_service", controllerService);
+ testRunner.setProperty(controllerService, StandardDropboxCredentialService.APP_KEY, APP_KEY);
+ testRunner.setProperty(controllerService, StandardDropboxCredentialService.APP_SECRET, APP_SECRET);
+ testRunner.setProperty(controllerService, StandardDropboxCredentialService.ACCESS_TOKEN, ACCESS_TOKEN);
+ testRunner.setProperty(controllerService, StandardDropboxCredentialService.REFRESH_TOKEN, REFRESH_TOKEN);
+ testRunner.enableControllerService(controllerService);
+ testRunner.setProperty(ListDropbox.CREDENTIAL_SERVICE, "dropbox_credential_provider_service");
+
+ return testRunner;
+ }
+
+ protected void deleteFolderIfExists(String path) throws Exception {
+ if (folderExists(path)) {
+ client.files().deleteV2(path);
+ }
+ }
+
+ protected FileMetadata createFile(String name, String fileContent, String folder) throws Exception {
+ ByteArrayInputStream content = new ByteArrayInputStream(fileContent.getBytes(StandardCharsets.UTF_8));
+ return client.files().upload(folder + "/" + name).uploadAndFinish(content);
+ }
+
+ private String createFolder(String path) throws Exception {
+ if (folderExists(path)) {
+ deleteFolder(path);
+ }
+ return client.files().createFolderV2(path).getMetadata().getId();
+ }
+
+ private void deleteFolder(String path) throws Exception {
+ client.files().deleteV2(path);
+ }
+
+ private boolean folderExists(String path) throws Exception {
+ try {
+ return client.files().getMetadata(path) != null;
+ } catch (GetMetadataErrorException e) {
+ if (e.errorValue.isPath() && e.errorValue.getPathValue().isNotFound()) {
+ return false;
+ }
+ throw e;
+ }
+ }
+}
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxIT.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxIT.java
new file mode 100644
index 0000000000..d027f23a5c
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxIT.java
@@ -0,0 +1,136 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.nifi.processors.dropbox;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static java.util.stream.Collectors.toList;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Arrays;
+import java.util.List;
+import org.apache.nifi.util.MockFlowFile;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+public class ListDropboxIT extends AbstractDropboxIT {
+
+ private static final String NOT_MAIN_FOLDER = "/notMainFolder";
+ private static final String YOUNG_FILE_NAME = "just_created";
+
+ @BeforeEach
+ public void init() throws Exception {
+ super.init();
+ testRunner.setProperty(ListDropbox.FOLDER, MAIN_FOLDER);
+ }
+
+ @AfterEach
+ public void teardown() throws Exception {
+ super.teardown();
+ deleteFolderIfExists(NOT_MAIN_FOLDER);
+ }
+
+ @Override
+ protected ListDropbox createTestSubject() {
+ return new ListDropbox();
+ }
+
+ @Test
+ void testEmbeddedDirectoriesAreListed() throws Exception {
+ createFile("test_file1", "test_file_content1", MAIN_FOLDER);
+ createFile("test_file2", "test_file_content2", MAIN_FOLDER);
+ createFile("test_file11", "test_file_content11", MAIN_FOLDER + "/testFolder1");
+ createFile("test_file112", "test_file_content112", MAIN_FOLDER + "/testFolder2");
+
+ createFile("test_file_not_in_main_folder", "test_file_content31", NOT_MAIN_FOLDER);
+
+ List expectedFileNames = Arrays.asList("test_file1", "test_file2", "test_file11", "test_file112");
+
+ waitForFileCreation();
+
+ testRunner.run();
+
+ List successFlowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+
+ List actualFileNames = getFilenames(successFlowFiles);
+
+ assertEquals(expectedFileNames, actualFileNames);
+ }
+
+ @Test
+ void testFolderIsListedById() throws Exception {
+ testRunner.setProperty(ListDropbox.FOLDER, mainFolderId);
+
+ createFile("test_file1", "test_file_content1", MAIN_FOLDER);
+ createFile("test_file11", "test_file_content11", MAIN_FOLDER + "/testFolder1");
+
+ List expectedFileNames = Arrays.asList("test_file1", "test_file11");
+
+ waitForFileCreation();
+
+ testRunner.run();
+
+ List successFlowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+
+ List actualFileNames = getFilenames(successFlowFiles);
+
+ assertEquals(expectedFileNames, actualFileNames);
+ }
+
+ @Test
+ void testTooYoungFilesNotListedWhenMinAgeIsSet() throws Exception {
+ testRunner.setProperty(ListDropbox.MIN_AGE, "15 s");
+
+ createFile(YOUNG_FILE_NAME, "test_file_content1", MAIN_FOLDER);
+
+ waitForFileCreation();
+
+ testRunner.run();
+
+ List successFlowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+
+ List actualFileNames = getFilenames(successFlowFiles);
+
+ assertEquals(emptyList(), actualFileNames);
+
+ // Next, wait for another 10+ seconds for MIN_AGE to expire then list again.
+ Thread.sleep(10000);
+
+ List expectedFileNames = singletonList(YOUNG_FILE_NAME);
+
+ testRunner.run();
+
+ successFlowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+
+ actualFileNames = getFilenames(successFlowFiles);
+
+ assertEquals(expectedFileNames, actualFileNames);
+ }
+
+ private void waitForFileCreation() throws InterruptedException {
+ // We need to wait since the creation of the files are not (completely) synchronized.
+ Thread.sleep(5000);
+ }
+
+ private List getFilenames(List flowFiles) {
+ return flowFiles.stream()
+ .map(flowFile -> flowFile.getAttribute("filename"))
+ .collect(toList());
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxTest.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxTest.java
new file mode 100644
index 0000000000..33899936c4
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-processors/src/test/java/org/apache/nifi/processors/dropbox/ListDropboxTest.java
@@ -0,0 +1,285 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.nifi.processors.dropbox;
+
+import static java.util.Collections.singletonList;
+import static java.util.Spliterators.spliteratorUnknownSize;
+import static java.util.stream.Collectors.toList;
+import static org.apache.nifi.services.dropbox.StandardDropboxCredentialService.ACCESS_TOKEN;
+import static org.apache.nifi.services.dropbox.StandardDropboxCredentialService.APP_KEY;
+import static org.apache.nifi.services.dropbox.StandardDropboxCredentialService.APP_SECRET;
+import static org.apache.nifi.services.dropbox.StandardDropboxCredentialService.REFRESH_TOKEN;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.when;
+
+import com.dropbox.core.DbxException;
+import com.dropbox.core.v2.DbxClientV2;
+import com.dropbox.core.v2.files.DbxUserFilesRequests;
+import com.dropbox.core.v2.files.FileMetadata;
+import com.dropbox.core.v2.files.FolderMetadata;
+import com.dropbox.core.v2.files.ListFolderBuilder;
+import com.dropbox.core.v2.files.ListFolderResult;
+import com.dropbox.core.v2.files.Metadata;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Date;
+import java.util.List;
+import java.util.Spliterator;
+import java.util.stream.StreamSupport;
+import org.apache.nifi.json.JsonRecordSetWriter;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.reporting.InitializationException;
+import org.apache.nifi.serialization.RecordSetWriterFactory;
+import org.apache.nifi.services.dropbox.StandardDropboxCredentialService;
+import org.apache.nifi.util.MockFlowFile;
+import org.apache.nifi.util.TestRunner;
+import org.apache.nifi.util.TestRunners;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+@ExtendWith(MockitoExtension.class)
+public class ListDropboxTest {
+
+ public static final String ID_1 = "id:11111";
+ public static final String ID_2 = "id:22222";
+ public static final String TEST_FOLDER = "/testFolder";
+ public static final String FILENAME_1 = "file_name_1";
+ public static final String FILENAME_2 = "file_name_2";
+ public static final long SIZE = 125;
+ public static final long CREATED_TIME = 1659707000;
+ public static final String REVISION = "5e4ddb1320676a5c29261";
+ public static final boolean IS_RECURSIVE = true;
+ public static final long MIN_TIMESTAMP = 1659707000;
+ public static final long OLD_CREATED_TIME = 1657375066;
+ private TestRunner testRunner;
+
+ @Mock
+ private DbxClientV2 mockDropboxClient;
+
+ @Mock
+ private StandardDropboxCredentialService credentialService;
+
+ @Mock
+ private DbxUserFilesRequests mockDbxUserFilesRequest;
+
+ @Mock
+ private ListFolderResult mockListFolderResult;
+
+ @Mock
+ private ListFolderBuilder mockListFolderBuilder;
+
+ @BeforeEach
+ void setUp() throws Exception {
+ ListDropbox testSubject = new ListDropbox() {
+ @Override
+ public DbxClientV2 getDropboxApiClient(ProcessContext context) {
+ return mockDropboxClient;
+ }
+
+ @Override
+ protected List performListing(
+ ProcessContext context, Long minTimestamp, ListingMode ignoredListingMode) throws IOException {
+ return super.performListing(context, MIN_TIMESTAMP, ListingMode.EXECUTION);
+ }
+ };
+
+ testRunner = TestRunners.newTestRunner(testSubject);
+
+ mockStandardDropboxCredentialService();
+
+ testRunner.setProperty(ListDropbox.RECURSIVE_SEARCH, Boolean.toString(IS_RECURSIVE));
+ testRunner.setProperty(ListDropbox.MIN_AGE, "0 sec");
+ }
+
+ @Test
+ void testFolderValidity() {
+ testRunner.setProperty(ListDropbox.FOLDER, "id:odTlUvbpIEAAAAAAAAABmw");
+ testRunner.assertValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "/");
+ testRunner.assertValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "/tempFolder");
+ testRunner.assertValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "/tempFolder/tempSubFolder");
+ testRunner.assertValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "/tempFolder/tempSubFolder/");
+ testRunner.assertValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "tempFolder");
+ testRunner.assertNotValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "odTlUvbpIEAAAAAAAAABmw");
+ testRunner.assertNotValid();
+ testRunner.setProperty(ListDropbox.FOLDER, "");
+ testRunner.assertNotValid();
+ }
+
+ @Test
+ void testRootIsListed() throws Exception {
+ mockFileListing();
+
+ String folderName = "/";
+ testRunner.setProperty(ListDropbox.FOLDER, folderName);
+
+ //root is listed when "" is used in Dropbox API
+ when(mockDbxUserFilesRequest.listFolderBuilder("")).thenReturn(mockListFolderBuilder);
+ when(mockListFolderResult.getEntries()).thenReturn(singletonList(
+ createFileMetaData(FILENAME_1, folderName, ID_1, CREATED_TIME)
+ ));
+
+ testRunner.run();
+
+ testRunner.assertAllFlowFilesTransferred(ListDropbox.REL_SUCCESS, 1);
+ List flowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+ MockFlowFile ff0 = flowFiles.get(0);
+ assertFlowFileAttributes(ff0, folderName);
+ }
+
+ @Test
+ void testOnlyFilesAreListedFolderIsFiltered() throws Exception {
+ mockFileListing();
+
+ testRunner.setProperty(ListDropbox.FOLDER, TEST_FOLDER);
+
+ when(mockDbxUserFilesRequest.listFolderBuilder(TEST_FOLDER)).thenReturn(mockListFolderBuilder);
+ when(mockListFolderResult.getEntries()).thenReturn(Arrays.asList(
+ createFileMetaData(FILENAME_1, TEST_FOLDER, ID_1, CREATED_TIME),
+ createFolderMetaData("testFolder1", TEST_FOLDER)
+ ));
+
+ testRunner.run();
+
+ testRunner.assertAllFlowFilesTransferred(ListDropbox.REL_SUCCESS, 1);
+ List flowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+ MockFlowFile ff0 = flowFiles.get(0);
+ assertFlowFileAttributes(ff0, TEST_FOLDER);
+ }
+
+ @Test
+ void testOldItemIsFiltered() throws Exception {
+ mockFileListing();
+
+ testRunner.setProperty(ListDropbox.FOLDER, TEST_FOLDER);
+
+ when(mockDbxUserFilesRequest.listFolderBuilder(TEST_FOLDER)).thenReturn(mockListFolderBuilder);
+ when(mockListFolderResult.getEntries()).thenReturn(Arrays.asList(
+ createFileMetaData(FILENAME_1, TEST_FOLDER, ID_1, CREATED_TIME),
+ createFileMetaData(FILENAME_2, TEST_FOLDER, ID_2, OLD_CREATED_TIME)
+ ));
+
+ testRunner.run();
+
+ testRunner.assertAllFlowFilesTransferred(ListDropbox.REL_SUCCESS, 1);
+ List flowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+ MockFlowFile ff0 = flowFiles.get(0);
+ assertFlowFileAttributes(ff0, TEST_FOLDER);
+ }
+
+ @Test
+ void testRecordWriter() throws Exception {
+ mockFileListing();
+ mockRecordWriter();
+
+ testRunner.setProperty(ListDropbox.FOLDER, TEST_FOLDER);
+
+ when(mockDbxUserFilesRequest.listFolderBuilder(TEST_FOLDER)).thenReturn(mockListFolderBuilder);
+ when(mockListFolderResult.getEntries()).thenReturn(Arrays.asList(
+ createFileMetaData(FILENAME_1, TEST_FOLDER, ID_1, CREATED_TIME),
+ createFileMetaData(FILENAME_2, TEST_FOLDER, ID_2, CREATED_TIME)
+ ));
+
+ testRunner.run();
+
+ testRunner.assertAllFlowFilesTransferred(ListDropbox.REL_SUCCESS, 1);
+ List flowFiles = testRunner.getFlowFilesForRelationship(ListDropbox.REL_SUCCESS);
+ MockFlowFile ff0 = flowFiles.get(0);
+ List expectedFileNames = Arrays.asList(FILENAME_1, FILENAME_2);
+ List actualFileNames = getFilenames(ff0.getContent());
+
+ assertEquals(expectedFileNames, actualFileNames);
+ }
+
+ private void assertFlowFileAttributes(MockFlowFile flowFile, String folderName) {
+ flowFile.assertAttributeEquals(DropboxFileInfo.ID, ID_1);
+ flowFile.assertAttributeEquals(DropboxFileInfo.FILENAME, FILENAME_1);
+ flowFile.assertAttributeEquals(DropboxFileInfo.PATH, folderName);
+ flowFile.assertAttributeEquals(DropboxFileInfo.TIMESTAMP, Long.toString(CREATED_TIME));
+ flowFile.assertAttributeEquals(DropboxFileInfo.SIZE, Long.toString(SIZE));
+ flowFile.assertAttributeEquals(DropboxFileInfo.REVISION, REVISION);
+ }
+
+ private FileMetadata createFileMetaData(
+ String filename,
+ String parent,
+ String id,
+ long createdTime) {
+ return FileMetadata.newBuilder(filename, id,
+ new Date(createdTime),
+ new Date(createdTime),
+ REVISION, SIZE)
+ .withPathDisplay(parent + "/" + filename)
+ .build();
+ }
+
+ private Metadata createFolderMetaData(String folderName, String parent) {
+ return FolderMetadata.newBuilder(folderName)
+ .withPathDisplay(parent + "/" + folderName)
+ .build();
+ }
+
+ private void mockStandardDropboxCredentialService() throws Exception {
+ String credentialServiceId = "dropbox_credentials";
+ when(credentialService.getIdentifier()).thenReturn(credentialServiceId);
+ testRunner.addControllerService(credentialServiceId, credentialService);
+ testRunner.setProperty(credentialService, APP_KEY, "appKey");
+ testRunner.setProperty(credentialService, APP_SECRET, "appSecret");
+ testRunner.setProperty(credentialService, ACCESS_TOKEN, "accessToken");
+ testRunner.setProperty(credentialService, REFRESH_TOKEN, "refreshToken");
+ testRunner.enableControllerService(credentialService);
+ testRunner.setProperty(ListDropbox.CREDENTIAL_SERVICE, credentialServiceId);
+ }
+
+ private void mockRecordWriter() throws InitializationException {
+ RecordSetWriterFactory recordWriter = new JsonRecordSetWriter();
+ testRunner.addControllerService("record_writer", recordWriter);
+ testRunner.enableControllerService(recordWriter);
+ testRunner.setProperty(ListDropbox.RECORD_WRITER, "record_writer");
+ }
+
+ private void mockFileListing() throws DbxException {
+ when(mockListFolderBuilder.withRecursive(IS_RECURSIVE)).thenReturn(mockListFolderBuilder);
+ when(mockListFolderBuilder.start()).thenReturn(mockListFolderResult);
+ when(mockDropboxClient.files()).thenReturn(mockDbxUserFilesRequest);
+ when(mockListFolderResult.getHasMore()).thenReturn(false);
+ }
+
+ private List getFilenames(String flowFileContent) {
+ try {
+ JsonNode jsonNode = new ObjectMapper().readTree(flowFileContent);
+ return StreamSupport.stream(spliteratorUnknownSize(jsonNode.iterator(), Spliterator.ORDERED), false)
+ .map(node -> node.get("filename").asText())
+ .collect(toList());
+ } catch (JsonProcessingException e) {
+ return Collections.emptyList();
+ }
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/pom.xml
new file mode 100644
index 0000000000..08c0839c28
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/pom.xml
@@ -0,0 +1,46 @@
+
+
+
+ 4.0.0
+
+
+ nifi-dropbox-bundle
+ org.apache.nifi
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-services-api-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+ true
+ true
+
+
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api
+ 1.18.0-SNAPSHOT
+
+
+ org.apache.nifi
+ nifi-standard-services-api-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/LICENSE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000000..7a4a3ea242
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
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+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
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+
+ "Object" form shall mean any form resulting from mechanical
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+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/NOTICE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000000..cd10c27e09
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api-nar/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,5 @@
+nifi-dropbox-services-api-nar
+Copyright 2015-2022 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/pom.xml
new file mode 100644
index 0000000000..4ac6405b45
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/pom.xml
@@ -0,0 +1,34 @@
+
+
+
+ 4.0.0
+
+
+ nifi-dropbox-bundle
+ org.apache.nifi
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-services-api
+ jar
+
+
+
+ org.apache.nifi
+ nifi-api
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialDetails.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialDetails.java
new file mode 100644
index 0000000000..377bd27014
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialDetails.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.dropbox.credentials.service;
+
+public class DropboxCredentialDetails {
+ private final String appKey;
+ private final String appSecret;
+ private final String accessToken;
+ private final String refreshToken;
+
+ public DropboxCredentialDetails(String appKey, String appSecret, String accessToken, String refreshToken) {
+ this.appKey = appKey;
+ this.appSecret = appSecret;
+ this.accessToken = accessToken;
+ this.refreshToken = refreshToken;
+ }
+
+ public String getAppKey() {
+ return appKey;
+ }
+
+ public String getAppSecret() {
+ return appSecret;
+ }
+
+ public String getAccessToken() {
+ return accessToken;
+ }
+
+ public String getRefreshToken() {
+ return refreshToken;
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialService.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialService.java
new file mode 100644
index 0000000000..6d63ba9620
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-api/src/main/java/org/apache/nifi/dropbox/credentials/service/DropboxCredentialService.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.dropbox.credentials.service;
+
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.controller.ControllerService;
+
+/**
+ * DropboxCredentialService interface to support getting Dropbox credentials (app key, app secret, access token, refresh token)
+ *
+ *
+ * @see Dropbox Developers Getting Started
+ * @see DbxCredential
+ */
+@Tags({"dropbox", "credentials", "auth", "session"})
+@CapabilityDescription("Provides DropboxCredentialDetails.")
+public interface DropboxCredentialService extends ControllerService {
+ /**
+ * Get Dropbox credentials
+ * @return DropboxCredentialDetails object which contains app key, app secret, access and refresh tokens for authorizing
+ * requests on the Dropbox platform.
+ */
+ DropboxCredentialDetails getDropboxCredential();
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/pom.xml
new file mode 100644
index 0000000000..1b220119bf
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/pom.xml
@@ -0,0 +1,45 @@
+
+
+
+ 4.0.0
+
+
+ org.apache.nifi
+ nifi-dropbox-bundle
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-services-nar
+ nar
+
+ true
+ true
+
+
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api-nar
+ 1.18.0-SNAPSHOT
+ nar
+
+
+ org.apache.nifi
+ nifi-dropbox-services
+ 1.18.0-SNAPSHOT
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/LICENSE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000000..7a4a3ea242
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
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+ "Licensor" shall mean the copyright owner or entity authorized by
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+
+ "Legal Entity" shall mean the union of the acting entity and all
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+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ "Object" form shall mean any form resulting from mechanical
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+
+ "Work" shall mean the work of authorship, whether in Source or
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+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
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+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
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+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
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+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+ Copyright [yyyy] [name of copyright owner]
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/NOTICE b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000000..2075708639
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services-nar/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,5 @@
+nifi-dropbox-services-nar
+Copyright 2015-2022 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/pom.xml b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/pom.xml
new file mode 100644
index 0000000000..3eead7465f
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/pom.xml
@@ -0,0 +1,45 @@
+
+
+
+ 4.0.0
+
+
+ org.apache.nifi
+ nifi-dropbox-bundle
+ 1.18.0-SNAPSHOT
+
+
+ nifi-dropbox-services
+ jar
+
+
+
+ org.apache.nifi
+ nifi-api
+
+
+ org.apache.nifi
+ nifi-utils
+ 1.18.0-SNAPSHOT
+
+
+ org.apache.nifi
+ nifi-dropbox-services-api
+ 1.18.0-SNAPSHOT
+ provided
+
+
+
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/java/org/apache/nifi/services/dropbox/StandardDropboxCredentialService.java b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/java/org/apache/nifi/services/dropbox/StandardDropboxCredentialService.java
new file mode 100644
index 0000000000..33a9715224
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/java/org/apache/nifi/services/dropbox/StandardDropboxCredentialService.java
@@ -0,0 +1,112 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.services.dropbox;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnEnabled;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.controller.AbstractControllerService;
+import org.apache.nifi.controller.ConfigurationContext;
+import org.apache.nifi.dropbox.credentials.service.DropboxCredentialDetails;
+import org.apache.nifi.dropbox.credentials.service.DropboxCredentialService;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.processor.util.StandardValidators;
+
+@CapabilityDescription("Defines credentials for Dropbox processors.")
+@Tags({"dropbox", "credentials", "provider"})
+public class StandardDropboxCredentialService extends AbstractControllerService implements DropboxCredentialService {
+
+ public static final PropertyDescriptor APP_KEY = new PropertyDescriptor.Builder()
+ .name("app-key")
+ .displayName("App Key")
+ .description("App Key of the user's Dropbox app." +
+ " See Additional Details for more information.")
+ .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(true)
+ .build();
+
+ public static final PropertyDescriptor APP_SECRET = new PropertyDescriptor.Builder()
+ .name("app-secret")
+ .displayName("App Secret")
+ .description("App Secret of the user's Dropbox app." +
+ " See Additional Details for more information.")
+ .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+ .sensitive(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(true)
+ .build();
+
+ public static final PropertyDescriptor ACCESS_TOKEN = new PropertyDescriptor.Builder()
+ .name("access-token")
+ .displayName("Access Token")
+ .description("Access Token of the user's Dropbox app." +
+ " See Additional Details for more information about Access Token generation.")
+ .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+ .sensitive(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(true)
+ .build();
+
+ public static final PropertyDescriptor REFRESH_TOKEN = new PropertyDescriptor.Builder()
+ .name("refresh-token")
+ .displayName("Refresh Token")
+ .description("Refresh Token of the user's Dropbox app." +
+ " See Additional Details for more information about Refresh Token generation.")
+ .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
+ .sensitive(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(true)
+ .build();
+
+ private static final List PROPERTIES;
+
+ static {
+ final List props = new ArrayList<>();
+ props.add(APP_KEY);
+ props.add(APP_SECRET);
+ props.add(ACCESS_TOKEN);
+ props.add(REFRESH_TOKEN);
+ PROPERTIES = Collections.unmodifiableList(props);
+ }
+
+ private DropboxCredentialDetails credential;
+
+ @Override
+ public final List getSupportedPropertyDescriptors() {
+ return PROPERTIES;
+ }
+
+ @OnEnabled
+ public void onEnabled(final ConfigurationContext context) {
+ final String appKey = context.getProperty(APP_KEY).evaluateAttributeExpressions().getValue();
+ final String appSecret = context.getProperty(APP_SECRET).evaluateAttributeExpressions().getValue();
+ final String accessToken = context.getProperty(ACCESS_TOKEN).evaluateAttributeExpressions().getValue();
+ final String refreshToken = context.getProperty(REFRESH_TOKEN).evaluateAttributeExpressions().getValue();
+
+ this.credential = new DropboxCredentialDetails(appKey, appSecret, accessToken, refreshToken);
+ }
+
+ @Override
+ public DropboxCredentialDetails getDropboxCredential() {
+ return credential;
+ }
+}
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService
new file mode 100644
index 0000000000..f561310fb3
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/META-INF/services/org.apache.nifi.controller.ControllerService
@@ -0,0 +1,15 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+org.apache.nifi.services.dropbox.StandardDropboxCredentialService
\ No newline at end of file
diff --git a/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/docs/org.apache.nifi.services.dropbox.StandardDropboxCredentialService/additionalDetails.html b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/docs/org.apache.nifi.services.dropbox.StandardDropboxCredentialService/additionalDetails.html
new file mode 100644
index 0000000000..e3c330fb5d
--- /dev/null
+++ b/nifi-nar-bundles/nifi-dropbox-bundle/nifi-dropbox-services/src/main/resources/docs/org.apache.nifi.services.dropbox.StandardDropboxCredentialService/additionalDetails.html
@@ -0,0 +1,105 @@
+
+
+
+
+
+
+ StandardDropboxCredentialService
+
+
+
+
+
+ This document describes how to generate these credentials using an existing Dropbox account.
+
+
+
Generate App Key and App Secret
+
+
+
+
Login with your Dropbox account.
+
If you already have an app created, go to Dropbox Developers page,
+ click on "App Console" button and select your app. On the app's info page you will find the "App key" and "App secret".
+ (See also Dropbox Getting Started, App Console tab, "Navigating the App Console" chapter)
+
+
If you don't have any apps, go to Dropbox Developers page and
+ click on "Create app" button. (See also Dropbox Getting Started, App Console tab,
+ "Creating a Dropbox app" chapter.)
+
+
On the next page select "Scoped access" and "Full Dropbox" as access type.
+
Provide a name for your app.
+
On the app's info page you will find the "App key" and "App secret".
+ (See also
+ Dropbox Getting Started, App Console tab, "Navigating the App Console" chapter.)
+
+
+
+
+
+
+
Set required permissions for your app
+
The "files.content.read" permission has to be enabled for the application to be able to read the files in Dropbox.
Click on "App Console" button and select your app.
+
Go to "Permissions" tab and enable the "files.content.read" permission.
+
Click "Submit" button.
+
NOTE: In case you already have an Access Token and Refresh Token, those tokens have to be regenerated after the permission change.
+See "Generate Access Token and Refresh Token" chapter about token generation.
Click "Next" and click on "Allow" button on the next page.
+
An access code will be generated for you, it will be displayed on the next page:
+
+ "Access Code Generated
+ Enter this code into your_app_name to finish the process
+ your_generated_access_code"
+
+
Execute the following command from terminal to fetch the access and refresh tokens.
+ Make sure you execute the curl command right after the access code generation, since the code expires very quickly.
+ In case the curl command returns "invalid grant" error, please generate a new access code (see previous step)
+
+