Rename core module to server (#28180)

This is related to #27933. It renames the core module to server. This is
the first step towards introducing an elasticsearch-core jar.

build.gradle

@@ -79,7 +79,7 @@ configure(subprojects.findAll { it.projectDir.toPath().startsWith(rootPath) }) {
  * backwards compatibility guarantees and only keeping the latest beta or rc
  * in a branch if there are only betas and rcs in the branch so we have
  * *something* to test against. */
-VersionCollection versions = new VersionCollection(file('core/src/main/java/org/elasticsearch/Version.java').readLines('UTF-8'))
+VersionCollection versions = new VersionCollection(file('server/src/main/java/org/elasticsearch/Version.java').readLines('UTF-8'))
 if (versions.currentVersion.toString() != VersionProperties.elasticsearch) {
   throw new GradleException("The last version in Versions.java [${versions.currentVersion}] does not match " +
           "VersionProperties.elasticsearch [${VersionProperties.elasticsearch}]")
@@ -181,8 +181,8 @@ subprojects {
   ext.projectSubstitutions = [
     "org.elasticsearch.gradle:build-tools:${version}": ':build-tools',
     "org.elasticsearch:rest-api-spec:${version}": ':rest-api-spec',
-    "org.elasticsearch:elasticsearch:${version}": ':core',
-    "org.elasticsearch:elasticsearch-cli:${version}": ':core:cli',
+    "org.elasticsearch:elasticsearch:${version}": ':server',
+    "org.elasticsearch:elasticsearch-cli:${version}": ':server:cli',
     "org.elasticsearch:elasticsearch-nio:${version}": ':libs:elasticsearch-nio',
     "org.elasticsearch.client:elasticsearch-rest-client:${version}": ':client:rest',
     "org.elasticsearch.client:elasticsearch-rest-client-sniffer:${version}": ':client:sniffer',
@@ -227,7 +227,7 @@ subprojects {
 
     // Handle javadoc dependencies across projects. Order matters: the linksOffline for
     // org.elasticsearch:elasticsearch must be the last one or all the links for the
-    // other packages (e.g org.elasticsearch.client) will point to core rather than
+    // other packages (e.g org.elasticsearch.client) will point to server rather than
     // their own artifacts.
     if (project.plugins.hasPlugin(BuildPlugin)) {
       String artifactsHost = VersionProperties.elasticsearch.endsWith("-SNAPSHOT") ? "https://snapshots.elastic.co" : "https://artifacts.elastic.co"
@@ -255,7 +255,7 @@ subprojects {
 gradle.projectsEvaluated {
   allprojects {
     if (project.path == ':test:framework') {
-      // :test:framework:test cannot run before and after :core:test
+      // :test:framework:test cannot run before and after :server:test
       return
     }
     configurations.all {

buildSrc/src/main/groovy/org/elasticsearch/gradle/precommit/PrecommitTasks.groovy

@@ -84,7 +84,7 @@ class PrecommitTasks {
         Task mainForbidden = project.tasks.findByName('forbiddenApisMain')
         if (mainForbidden != null) {
             mainForbidden.configure {
-                signaturesURLs += getClass().getResource('/forbidden/es-core-signatures.txt')
+                signaturesURLs += getClass().getResource('/forbidden/es-server-signatures.txt')
             }
         }
         Task testForbidden = project.tasks.findByName('forbiddenApisTest')

buildSrc/version.properties

@@ -17,15 +17,15 @@ jna               = 4.5.1
 randomizedrunner  = 2.5.2
 junit             = 4.12
 httpclient        = 4.5.2
-# When updating httpcore, please also update core/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
+# When updating httpcore, please also update server/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
 httpcore          = 4.4.5
-# When updating httpasyncclient, please also update core/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
+# When updating httpasyncclient, please also update server/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
 httpasyncclient   = 4.1.2
 commonslogging    = 1.1.3
 commonscodec      = 1.10
 hamcrest          = 1.3
 securemock        = 1.2
-# When updating mocksocket, please also update core/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
+# When updating mocksocket, please also update server/src/main/resources/org/elasticsearch/bootstrap/test-framework.policy
 mocksocket        = 1.2
 
 # benchmark dependencies

client/rest/build.gradle

@@ -57,7 +57,7 @@ dependencies {
 }
 
 forbiddenApisMain {
-  //client does not depend on core, so only jdk and http signatures should be checked
+  //client does not depend on server, so only jdk and http signatures should be checked
   signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt'),
                     PrecommitTasks.getResource('/forbidden/http-signatures.txt')]
 }
@@ -66,12 +66,12 @@ forbiddenApisTest {
   //we are using jdk-internal instead of jdk-non-portable to allow for com.sun.net.httpserver.* usage
   bundledSignatures -= 'jdk-non-portable'
   bundledSignatures += 'jdk-internal'
-  //client does not depend on core, so only jdk signatures should be checked
+  //client does not depend on server, so only jdk signatures should be checked
   signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt'),
                     PrecommitTasks.getResource('/forbidden/http-signatures.txt')]
 }
 
-//JarHell is part of es core, which we don't want to pull in
+// JarHell is part of es server, which we don't want to pull in
 jarHell.enabled=false
 
 namingConventions {

client/sniffer/build.gradle

@@ -57,15 +57,15 @@ dependencies {
 }
 
 forbiddenApisMain {
-  //client does not depend on core, so only jdk signatures should be checked
+  //client does not depend on server, so only jdk signatures should be checked
   signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt')]
 }
 
 forbiddenApisTest {
   //we are using jdk-internal instead of jdk-non-portable to allow for com.sun.net.httpserver.* usage
   bundledSignatures -= 'jdk-non-portable'
   bundledSignatures += 'jdk-internal'
-  //client does not depend on core, so only jdk signatures should be checked
+  //client does not depend on server, so only jdk signatures should be checked
   signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt')]
 }
 
@@ -74,7 +74,7 @@ dependencyLicenses {
   mapping from: /commons-.*/, to: 'commons'
 }
 
-//JarHell is part of es core, which we don't want to pull in
+// JarHell is part of es server, which we don't want to pull in
 jarHell.enabled=false
 
 namingConventions {
@@ -101,4 +101,4 @@ thirdPartyAudit.excludes = [
   //commons-logging provided dependencies
   'javax.servlet.ServletContextEvent',
   'javax.servlet.ServletContextListener'
-]
+]

client/test/build.gradle

@@ -48,7 +48,7 @@ forbiddenApisTest {
   signaturesURLs = [PrecommitTasks.getResource('/forbidden/jdk-signatures.txt')]
 }
 
-//JarHell is part of es core, which we don't want to pull in
+// JarHell is part of es server, which we don't want to pull in
 jarHell.enabled=false
 
 // TODO: should we have licenses for our test deps?

distribution/build.gradle

@@ -59,14 +59,14 @@ task generateDependenciesReport(type: ConcatFilesTask) {
  *                                Notice file                                *
  *****************************************************************************/
 
-// integ test zip only uses core, so a different notice file is needed there
+// integ test zip only uses server, so a different notice file is needed there
 task buildCoreNotice(type: NoticeTask) {
-  licensesDir new File(project(':core').projectDir, 'licenses')
+  licensesDir new File(project(':server').projectDir, 'licenses')
 }
 
 // other distributions include notices from modules as well, which are added below later
 task buildFullNotice(type: NoticeTask) {
-  licensesDir new File(project(':core').projectDir, 'licenses')
+  licensesDir new File(project(':server').projectDir, 'licenses')
 }
 
 /*****************************************************************************
@@ -173,8 +173,8 @@ configure(distributions) {
      *****************************************************************************/
     libFiles = copySpec {
       into 'lib'
-      from project(':core').jar
-      from project(':core').configurations.runtime
+      from { project(':server').jar }
+      from { project(':server').configurations.runtime }
       from { project(':libs:plugin-classloader').jar }
       // delay add tools using closures, since they have not yet been configured, so no jar task exists yet
       from { project(':distribution:tools:launchers').jar }

docs/build.gradle

@@ -32,8 +32,8 @@ integTestCluster {
   configFile 'analysis/stemmer_override.txt'
   configFile 'userdict_ja.txt'
   configFile 'KeywordTokenizer.rbbi'
-  extraConfigFile 'hunspell/en_US/en_US.aff', '../core/src/test/resources/indices/analyze/conf_dir/hunspell/en_US/en_US.aff'
-  extraConfigFile 'hunspell/en_US/en_US.dic', '../core/src/test/resources/indices/analyze/conf_dir/hunspell/en_US/en_US.dic'
+  extraConfigFile 'hunspell/en_US/en_US.aff', '../server/src/test/resources/indices/analyze/conf_dir/hunspell/en_US/en_US.aff'
+  extraConfigFile 'hunspell/en_US/en_US.dic', '../server/src/test/resources/indices/analyze/conf_dir/hunspell/en_US/en_US.dic'
   // Whitelist reindexing from the local node so we can test it.
   setting 'reindex.remote.whitelist', '127.0.0.1:*'
 }

core/build.gradle → server/build.gradle

@@ -92,9 +92,9 @@ dependencies {
   // repackaged jna with native bits linked against all elastic supported platforms
   compile "org.elasticsearch:jna:${versions.jna}"
 
-  if (isEclipse == false || project.path == ":core-tests") {
+  if (isEclipse == false || project.path == ":server-tests") {
     testCompile("org.elasticsearch.test:framework:${version}") {
-      // tests use the locally compiled version of core
+      // tests use the locally compiled version of server
       exclude group: 'org.elasticsearch', module: 'elasticsearch'
     }
   }
@@ -105,7 +105,7 @@ dependencies {
 if (isEclipse) {
   // in eclipse the project is under a fake root, we need to change around the source sets
   sourceSets {
-    if (project.path == ":core") {
+    if (project.path == ":server") {
       main.java.srcDirs = ['java']
       main.resources.srcDirs = ['resources']
     } else {
@@ -276,7 +276,7 @@ dependencyLicenses {
   }
 }
 
-if (isEclipse == false || project.path == ":core-tests") {
+if (isEclipse == false || project.path == ":server-tests") {
   task integTest(type: RandomizedTestingTask,
                  group: JavaBasePlugin.VERIFICATION_GROUP,
                  description: 'Multi-node tests',

core/cli/build.gradle → server/cli/build.gradle

@@ -39,7 +39,7 @@ dependencies {
 }
 
 test.enabled = false
-// Since CLI does not depend on :core, it cannot run the jarHell task
+// Since CLI does not depend on :server, it cannot run the jarHell task
 jarHell.enabled = false
 
 forbiddenApisMain {