add ability to get configuration information from a file

integration-tests/README.md

@@ -31,18 +31,49 @@ docker info
 Running Integration tests
 =========================
 
-## Running tests using mvn
+## Starting docker tests
 
-To run all the tests using mvn run the following command -
+To run all the tests using docker and mvn run the following command -
 ```
   mvn verify -P integration-tests
 ```
 
-To run only a single test using mvn run following command -
+To run only a single test using mvn run the following command -
 ```
   mvn verify -P integration-tests -Dit.test=<test_name>
 ```
 
+## Configure and run integration tests using existing cluster
+
+To run tests on any druid cluster that is already running, create a configuration file:
+
+    {   
+       "broker_host": "<broker_ip>",
+       "broker_port": "<broker_port>",
+       "router_host": "<router_ip>",
+       "router_port": "<router_port>",
+       "indexer_host": "<indexer_ip>",
+       "indexer_port": "<indexer_port>",
+       "coordinator_host": "<coordinator_ip>",
+       "coordinator_port": "<coordinator_port>",
+       "middle_manager_host": "<middle_manager_ip>",
+       "zookeeper_hosts": "<comma-separated list of zookeeper_ip:zookeeper_port>",
+    }
+
+Set the environment variable CONFIG_FILE to the name of the configuration file -
+```
+export CONFIG_FILE=<config file name>
+```
+
+To run all the tests using mvn run the following command -
+```
+  mvn verify -P int-tests-config-file
+```
+
+To run only a single test using mvn run the following command -
+```
+  mvn verify -P int-tests-config-file -Dit.test=<test_name>
+```
 
 Writing a New Test
 ===============

integration-tests/pom.xml

@@ -147,6 +147,39 @@
                 </plugins>
             </build>
         </profile>
+        <profile>
+            <id>int-tests-config-file</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-failsafe-plugin</artifactId>
+                        <executions>
+                            <execution>
+                                <id>integration-tests</id>
+                                <phase>integration-test</phase>
+                                <goals>
+                                    <goal>integration-test</goal>
+                                    <goal>verify</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <argLine>
+                                -Duser.timezone=UTC
+                                -Dfile.encoding=UTF-8
+                                -Dtestrunfactory=org.testng.DruidTestRunnerFactory
+                                -Ddruid.test.config.type=configFile
+                                -Ddruid.test.config.configFile=${env.CONFIG_FILE}
+                            </argLine>
+                            <suiteXmlFiles>
+                                <suiteXmlFile>src/test/resources/testng.xml</suiteXmlFile>
+                            </suiteXmlFiles>
+                        </configuration>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 
 </project>

integration-tests/src/main/java/io/druid/testing/ConfigFileConfigProvider.java

@@ -0,0 +1,112 @@
+/*
+* Licensed to Metamarkets Group Inc. (Metamarkets) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. Metamarkets 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 io.druid.testing;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.io.FileNotFoundException;
+import java.io.File;
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.Map;
+
+public class ConfigFileConfigProvider implements IntegrationTestingConfigProvider
+{
+  private String routerHost = "";
+  private String brokerHost = "";
+  private String coordinatorHost = "";
+  private String indexerHost = "";
+  private String middleManagerHost = "";
+  private String zookeeperHosts = "";
+  private Map<String, String> props = null;
+
+  @JsonCreator
+  ConfigFileConfigProvider(@JsonProperty("configFile") String configFile){
+    loadProperties(configFile);
+  }
+
+  private void loadProperties(String configFile)
+  {
+    ObjectMapper jsonMapper = new ObjectMapper();
+    try {
+      props = jsonMapper.readValue(
+          new File(configFile), new TypeReference<Map<String, String>>()
+      {
+      }
+      );
+    }
+    catch (IOException ex) {
+      throw new RuntimeException(ex);
+    }
+    routerHost = props.get("router_host") + ":" + props.get("router_port");
+    brokerHost = props.get("broker_host") + ":" + props.get("broker_port");
+    coordinatorHost = props.get("coordinator_host") + ":" + props.get("coordinator_port");
+    indexerHost = props.get("indexer_host") + ":" + props.get("indexer_port");
+    middleManagerHost = props.get("middle_manager_host");
+    zookeeperHosts = props.get("zookeeper_hosts");
+  }
+
+  @Override
+  public IntegrationTestingConfig get()
+  {
+    return new IntegrationTestingConfig()
+    {
+      @Override
+      public String getCoordinatorHost()
+      {
+        return coordinatorHost;
+      }
+
+      @Override
+      public String getIndexerHost()
+      {
+        return indexerHost;
+      }
+
+      @Override
+      public String getRouterHost()
+      {
+        return routerHost;
+      }
+
+      @Override
+      public String getBrokerHost()
+      {
+        return brokerHost;
+      }
+
+      @Override
+      public String getMiddleManagerHost()
+      {
+        return middleManagerHost;
+      }
+
+      @Override
+      public String getZookeeperHosts()
+      {
+        return zookeeperHosts;
+      }
+    };
+  }
+}

integration-tests/src/main/java/io/druid/testing/DockerConfigProvider.java

@@ -22,7 +22,7 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 
 import javax.validation.constraints.NotNull;
 
-public class DockerConfigProvider  implements IntegrationTestingConfigProvider
+public class DockerConfigProvider implements IntegrationTestingConfigProvider
 {
 
   @JsonProperty
@@ -63,6 +63,12 @@ public class DockerConfigProvider  implements IntegrationTestingConfigProvider
       {
         return dockerIp;
       }
+
+      @Override
+      public String getZookeeperHosts()
+      {
+        return dockerIp + ":2181";
+      }
     };
   }
 }

integration-tests/src/main/java/io/druid/testing/IntegrationTestingConfig.java

@@ -30,4 +30,6 @@ public interface IntegrationTestingConfig
   public String getBrokerHost();
 
   public String getMiddleManagerHost();
+
+  public String getZookeeperHosts();
 }

integration-tests/src/main/java/io/druid/testing/IntegrationTestingConfigProvider.java

@@ -23,7 +23,8 @@ import com.google.inject.Provider;
 
 @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type", defaultImpl = DockerConfigProvider.class)
 @JsonSubTypes(value = {
-    @JsonSubTypes.Type(name = "docker", value = DockerConfigProvider.class)
+    @JsonSubTypes.Type(name = "docker", value = DockerConfigProvider.class),
+    @JsonSubTypes.Type(name = "configFile", value = ConfigFileConfigProvider.class)
 })
 public interface IntegrationTestingConfigProvider extends Provider<IntegrationTestingConfig>
 {

integration-tests/src/main/java/io/druid/testing/clients/ZookeeperTestClient.java

@@ -0,0 +1,38 @@
+/*
+ * Druid - a distributed column store.
+ *
+ * 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.
+ */
+
+package io.druid.testing.clients;
+
+import com.google.inject.Inject;
+import io.druid.testing.IntegrationTestingConfig;
+
+public class ZookeeperTestClient
+{
+  private final String hosts;
+
+  @Inject
+  ZookeeperTestClient(
+      IntegrationTestingConfig config
+  )
+  {
+    this.hosts = config.getZookeeperHosts();
+  }
+
+  public String getZookeeperHosts()
+  {
+    return hosts;
+  }
+}