adding ability for gradle to create eclipse project files and classpaths

.gitignore

@@ -24,3 +24,12 @@ plugins/river/twitter/build
 plugins/river/wikipedia/build
 plugins/transport/memcached/build
 plugins/transport/thrift/build
+
+## eclipse ignores (use 'gradle eclipse' to build eclipse projects)
+.project
+.classpath
+.settings
+*/.project
+*/.classpath
+*/.settings
+*/eclipse-build

modules/elasticsearch/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':test-testng')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "$project.archivesBaseName"
 
@@ -125,3 +126,7 @@ uploadArchives {
         }
     }
 }
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
+}

modules/test/integration/build.gradle

@@ -1,6 +1,7 @@
 dependsOn(':elasticsearch')
 
 apply plugin: 'java'
+apply plugin: 'eclipse'
 
 archivesBaseName = "$rootProject.archivesBaseName-$project.archivesBaseName"
 
@@ -14,3 +15,8 @@ sourceSets.test.resources.srcDirs 'src/test/java'
 dependencies {
     compile project(':elasticsearch')
 }
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
+}
+

modules/test/testng/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'java'
+apply plugin: 'eclipse'
 
 archivesBaseName = "$rootProject.archivesBaseName-$project.archivesBaseName"
 
@@ -13,3 +14,7 @@ dependencies {
     compile('org.testng:testng:5.10:jdk15') { transitive = false }
     compile('log4j:log4j:1.2.15') { transitive = false }
 }
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
+}

plugins/analysis/icu/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-analysis-icu"
 
@@ -126,4 +127,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/cloud/aws/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-cloud-aws"
 
@@ -132,4 +133,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/cloud/aws/src/main/java/org/elasticsearch/cloud/aws/network/Ec2NameResolver.java

@@ -0,0 +1,96 @@
+package org.elasticsearch.cloud.aws.network;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.text.MessageFormat;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.commons.httpclient.HttpClient;
+import org.apache.commons.httpclient.HttpException;
+import org.apache.commons.httpclient.HttpStatus;
+import org.apache.commons.httpclient.methods.GetMethod;
+import org.elasticsearch.common.network.NetworkService.CustomNameResolver;
+
+/**
+ * Resolves certain ec2 related 'meta' hostnames into an actual hostname
+ * obtained from ec2 meta-data.
+ * <p /> 
+ * Valid config values for {@link Ec2HostnameType}s are -
+ * <ul>
+ *     <li>_ec2 - maps to privateIpv4</li>
+ *     <li>_ec2:privateIp_ - maps to privateIpv4</li>
+ *     <li>_ec2:privateIpv4_</li>
+ *     <li>_ec2:privateDns_</li>
+ *     <li>_ec2:publicIp_ - maps to publicIpv4</li>
+ *     <li>_ec2:publicIpv4_</li>
+ *     <li>_ec2:publicDns_</li>
+ * </ul>
+ * @author Paul_Loy (keteracel)
+ */
+public class Ec2NameResolver implements CustomNameResolver {
+
+	// enum that can be added to over time with more meta-data types (such as ipv6 when this is available)
+	private static enum Ec2HostnameType {
+
+		PRIVATE_IPv4("_ec2:privateIpv4_", "local-ipv4"),
+		PRIVATE_DNS ("_ec2:privateDns_",  "local-hostname"),
+		PUBLIC_IPv4 ("_ec2:publicIpv4_",  "public-ipv4"),
+		PUBLIC_DNS  ("_ec2:publicDns_",   "public-hostname"),
+
+		PUBLIC_IP   ("_ec2:publicIp_",    PUBLIC_IPv4.ec2Name),
+		PRIVATE_IP  ("_ec2:privateIp_",   PRIVATE_IPv4.ec2Name),
+		DEFAULT     ("_ec2",              PRIVATE_IPv4.ec2Name);
+
+		final String configName;
+		final String ec2Name;
+
+		private Ec2HostnameType(String configName, String ec2Name) {
+			this.configName = configName;
+			this.ec2Name = ec2Name;
+		}
+
+	}
+
+	private static final String EC2_METADATA_URL = "http://169.254.169.254/latest/meta-data/";
+
+	private final Ec2HostnameType type;
+
+	/**
+	 * Construct a {@link CustomNameResolver} with the given {@link Ec2HostnameType}
+	 * address type.
+	 * 
+	 * @param addressType the type of ec2 host to bind to.
+	 */
+	public Ec2NameResolver(Ec2HostnameType addressType) {
+		this.type = addressType;
+	}
+
+	/**
+	 * @return the appropriate host resolved from ec2 meta-data.
+	 * @throws IOException if ec2 meta-data cannot be obtained.
+	 * 
+	 * @see CustomNameResolver#resolve()
+	 */
+	@Override
+	public InetAddress resolve() throws IOException {
+		String ec2Url = EC2_METADATA_URL + this.type.ec2Name;
+		GetMethod ec2MetadataRequest = new GetMethod(ec2Url);
+
+		int status = new HttpClient().executeMethod(ec2MetadataRequest);
+		if (status != 200) {	
+			throw new HttpException(MessageFormat.format("unable to retrieve ec2 metadata from {0}. Response: {1} {2}", ec2Url, status, HttpStatus.getStatusText(status)));
+		}
+		String metadataResult = ec2MetadataRequest.getResponseBodyAsString();
+		return InetAddress.getByName(metadataResult);
+	}
+
+	public static Map<String, CustomNameResolver> resolvers() {
+		Map<String, CustomNameResolver> resolvers = new HashMap<String, CustomNameResolver>();
+		for (Ec2HostnameType type : Ec2HostnameType.values()) {
+			resolvers.put(type.configName, new Ec2NameResolver(type));
+		}
+		return resolvers;
+	}
+
+}

plugins/hadoop/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-hadoop"
 
@@ -131,3 +132,7 @@ uploadArchives {
         }
     }
 }
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
+}

plugins/lang/javascript/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-lang-javascript"
 
@@ -130,4 +131,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/lang/python/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-lang-python"
 
@@ -130,4 +131,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/mapper/attachments/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-mapper-attachments"
 
@@ -124,4 +125,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/river/couchdb/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-river-couchdb"
 
@@ -121,4 +122,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/river/rabbitmq/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-river-rabbitmq"
 
@@ -126,4 +127,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/river/twitter/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-river-twitter"
 
@@ -124,4 +125,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/river/wikipedia/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-river-wikipedia"
 
@@ -121,4 +122,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/transport/memcached/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-transport-memcached"
 
@@ -129,4 +130,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }

plugins/transport/thrift/build.gradle

@@ -2,6 +2,7 @@ dependsOn(':elasticsearch')
 
 apply plugin: 'java'
 apply plugin: 'maven'
+apply plugin: 'eclipse'
 
 archivesBaseName = "elasticsearch-transport-thrift"
 
@@ -132,4 +133,8 @@ uploadArchives {
             pom.dependencies = pom.dependencies.findAll {dep -> dep.scope != 'test' } // removes the test scoped ones
         }
     }
+}
+
+eclipseClasspath {
+    defaultOutputDir = file('build/eclipse-build')
 }