HADOOP-13242. Authenticate to Azure Data Lake using client ID and keys. Contributed by Atul Sikaria.
This commit is contained in:
Chris Nauroth
parent
51d497fa93
commit
51d16e7b38
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@ -147,7 +147,12 @@
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<dependency>
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-common</artifactId>
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</dependency>
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</dependency>
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<dependency>
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<groupId>com.squareup.okhttp</groupId>
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<artifactId>okhttp</artifactId>
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<version>2.4.0</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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@ -0,0 +1,155 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.apache.hadoop.hdfs.web.oauth2;
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import com.squareup.okhttp.OkHttpClient;
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import com.squareup.okhttp.Request;
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import com.squareup.okhttp.RequestBody;
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import com.squareup.okhttp.Response;
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import com.squareup.okhttp.MediaType;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hdfs.web.URLConnectionFactory;
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import org.apache.hadoop.util.Timer;
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import org.apache.http.HttpStatus;
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import org.codehaus.jackson.map.ObjectMapper;
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import org.codehaus.jackson.map.ObjectReader;
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import java.io.IOException;
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import java.util.Map;
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import java.util.concurrent.TimeUnit;
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import static org.apache.hadoop.hdfs.web.oauth2.Utils.notNull;
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/**
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* Obtain an access token via the credential-based OAuth2 workflow.
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*/
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@InterfaceAudience.Public
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@InterfaceStability.Evolving
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public class AzureADClientCredentialBasedAccesTokenProvider
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extends AccessTokenProvider {
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private static final ObjectReader READER =
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new ObjectMapper().reader(Map.class);
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public static final String OAUTH_CREDENTIAL_KEY
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= "dfs.webhdfs.oauth2.credential";
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public static final String AAD_RESOURCE_KEY
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= "fs.adls.oauth2.resource";
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public static final String RESOURCE_PARAM_NAME
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= "resource";
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private static final String OAUTH_CLIENT_ID_KEY
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= "dfs.webhdfs.oauth2.client.id";
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private static final String OAUTH_REFRESH_URL_KEY
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= "dfs.webhdfs.oauth2.refresh.url";
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public static final String ACCESS_TOKEN = "access_token";
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public static final String CLIENT_CREDENTIALS = "client_credentials";
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public static final String CLIENT_ID = "client_id";
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public static final String CLIENT_SECRET = "client_secret";
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public static final String EXPIRES_IN = "expires_in";
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public static final String GRANT_TYPE = "grant_type";
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public static final MediaType URLENCODED
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= MediaType.parse("application/x-www-form-urlencoded; charset=utf-8");
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private AccessTokenTimer timer;
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private String clientId;
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private String refreshURL;
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private String accessToken;
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private String resource;
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private String credential;
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private boolean initialCredentialObtained = false;
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AzureADClientCredentialBasedAccesTokenProvider() {
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this.timer = new AccessTokenTimer();
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}
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AzureADClientCredentialBasedAccesTokenProvider(Timer timer) {
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this.timer = new AccessTokenTimer(timer);
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}
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@Override
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public void setConf(Configuration conf) {
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super.setConf(conf);
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clientId = notNull(conf, OAUTH_CLIENT_ID_KEY);
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refreshURL = notNull(conf, OAUTH_REFRESH_URL_KEY);
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resource = notNull(conf, AAD_RESOURCE_KEY);
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credential = notNull(conf, OAUTH_CREDENTIAL_KEY);
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}
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@Override
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public String getAccessToken() throws IOException {
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if(timer.shouldRefresh() || !initialCredentialObtained) {
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refresh();
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initialCredentialObtained = true;
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}
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return accessToken;
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}
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void refresh() throws IOException {
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try {
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OkHttpClient client = new OkHttpClient();
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client.setConnectTimeout(URLConnectionFactory.DEFAULT_SOCKET_TIMEOUT,
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TimeUnit.MILLISECONDS);
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client.setReadTimeout(URLConnectionFactory.DEFAULT_SOCKET_TIMEOUT,
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TimeUnit.MILLISECONDS);
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String bodyString = Utils.postBody(CLIENT_SECRET, credential,
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GRANT_TYPE, CLIENT_CREDENTIALS,
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RESOURCE_PARAM_NAME, resource,
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CLIENT_ID, clientId);
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RequestBody body = RequestBody.create(URLENCODED, bodyString);
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Request request = new Request.Builder()
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.url(refreshURL)
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.post(body)
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.build();
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Response responseBody = client.newCall(request).execute();
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if (responseBody.code() != HttpStatus.SC_OK) {
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throw new IllegalArgumentException("Received invalid http response: "
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+ responseBody.code() + ", text = " + responseBody.toString());
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}
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Map<?, ?> response = READER.readValue(responseBody.body().string());
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String newExpiresIn = response.get(EXPIRES_IN).toString();
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timer.setExpiresIn(newExpiresIn);
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accessToken = response.get(ACCESS_TOKEN).toString();
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} catch (Exception e) {
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throw new IOException("Unable to obtain access token from credential", e);
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}
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}
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}
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@ -23,6 +23,9 @@
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* [OAuth2 Support](#OAuth2_Support)
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* [Read Ahead Buffer Management](Read_Ahead_Buffer_Management)
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* [Configuring Credentials & FileSystem](#Configuring_Credentials)
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* [Using Refresh Token](#Refresh_Token)
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* [Using Client Keys](#Client_Credential_Token)
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* [Enabling ADL Filesystem](#Enabling_ADL)
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* [Accessing adl URLs](#Accessing_adl_URLs)
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* [Testing the hadoop-azure Module](#Testing_the_hadoop-azure_Module)
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@ -131,6 +134,9 @@ To configure number of concurrent connection to Azure Data Lake Storage Account.
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</property>
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## <a name="Configuring_Credentials" />Configuring Credentials & FileSystem
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Credentials can be configured using either a refresh token (associated with a user) or a client credential (analogous to a service principal).
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### <a name="Refresh_Token" />Using Refresh Token
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Update core-site.xml for OAuth2 configuration
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@ -173,6 +179,64 @@ Application require to set Client id and OAuth2 refresh token from Azure Active
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<value></value>
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</property>
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### <a name="Client_Credential_Token" />Using Client Keys
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#### Generating the Service Principal
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1. Go to the portal (https://portal.azure.com)
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2. Under "Browse", look for Active Directory and click on it.
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3. Create "Web Application". Remember the name you create here - that is what you will add to your ADL account as authorized user.
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4. Go through the wizard
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5. Once app is created, Go to app configuration, and find the section on "keys"
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6. Select a key duration and hit save. Save the generated keys.
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7. Note down the properties you will need to auth:
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- The client ID
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- The key you just generated above
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- The token endpoint (select "View endpoints" at the bottom of the page and copy/paste the OAuth2 .0 Token Endpoint value)
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- Resource: Always https://management.core.windows.net/ , for all customers
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#### Adding the service principal to your ADL Account
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1. Go to the portal again, and open your ADL account
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2. Select Users under Settings
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3. Add your user name you created in Step 6 above (note that it does not show up in the list, but will be found if you searched for the name)
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4. Add "Owner" role
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#### Configure core-site.xml
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Add the following properties to your core-site.xml
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<property>
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<name>dfs.webhdfs.oauth2.access.token.provider</name>
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<value>org.apache.hadoop.hdfs.web.oauth2.AzureADClientCredentialBasedAccesTokenProvider</value>
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</property>
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<property>
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<name>dfs.webhdfs.oauth2.refresh.url</name>
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<value>TOKEN ENDPOINT FROM STEP 7 ABOVE</value>
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</property>
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<property>
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<name>dfs.webhdfs.oauth2.client.id</name>
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<value>CLIENT ID FROM STEP 7 ABOVE</value>
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</property>
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<property>
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<name>dfs.webhdfs.oauth2.credential</name>
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<value>PASSWORD FROM STEP 7 ABOVE</value>
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</property>
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<property>
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<name>fs.adls.oauth2.resource</name>
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<value>https://management.core.windows.net/</value>
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</property>
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<property>
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<name>fs.defaultFS</name>
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<value>YOUR ADL STORE URL (e.g., https://example.azuredatalakestore.net) </value>
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</property>
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## <a name="Enabling_ADL" />Enabling ADL Filesystem
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For ADL FileSystem to take effect. Update core-site.xml with
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<property>
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