HONEYCOMB-157 Extract groovy scripts from poms

And put all of them into a dedicated module

Change-Id: Id04c66806a89af68d821a43ef92f0a59220e04e9
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

3 files changed, 249 insertions, 0 deletions

diff --git a/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ModulesListGenerator.groovy b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ModulesListGenerator.groovy
new file mode 100644
index 000000000..c7a74d20e
--- /dev/null
+++ b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ModulesListGenerator.groovy
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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.fd.honeycomb.common.scripts
+
+import groovy.text.SimpleTemplateEngine
+
+import java.nio.file.Paths
+
+/**
+ * Generate modules-list file a honeycomb distribution.
+ */
+class ModulesListGenerator {
+
+    static final def DEFAULT_MODULES_LIST = ModulesListGenerator.getResource("/modules/modulesListDefaultContent").text
+
+    static final def MODULES_LIST_CONTENT_PROPERTY = "distribution.modules"
+    static final def MODULES_FOLDER = "modules"
+    static final def MODULE_LIST_FILE_SUFFIX = "-module-config"
+    static final def SEPARATOR = ","
+
+    public static void generate(project, properties, log) {
+        // module configuration file extraction
+        // builds project name from group,artifact and version to prevent overwriting
+        // while building multiple distribution project
+        def artifact = project.artifact
+        def projectName = "${artifact.getGroupId()}_${artifact.getArtifactId()}_${artifact.getVersion()}".replace(".","-")
+
+        log.info "Generating list of modules started by distribution ${projectName}"
+
+        def activeModules = properties.getProperty(MODULES_LIST_CONTENT_PROPERTY, DEFAULT_MODULES_LIST)
+                .tokenize(SEPARATOR)
+                .collect { module -> module.trim() }
+
+        log.info "Project ${projectName} : Found modules ${activeModules}"
+        //creates folder modules
+
+        def outputPath = Paths.get(project.build.outputDirectory, StartupScriptGenerator.MINIMAL_RESOURCES_FOLDER, MODULES_FOLDER)
+        //creates module folder
+        outputPath.toFile().mkdirs()
+
+        def outputFile = Paths.get(outputPath.toString(), "${projectName}${MODULE_LIST_FILE_SUFFIX}").toFile()
+        outputFile.createNewFile();
+        log.info("Writing module configuration for distribution ${projectName} to ${outputPath}")
+
+        if (activeModules.isEmpty()) {
+            outputFile.text = new SimpleTemplateEngine().createTemplate(DEFAULT_MODULES_LIST).make(
+                    ["groupId"   : project.groupId,
+                     "artifactId": project.artifactId,
+                     "version"   : project.version]).toString()
+        } else {
+            activeModules.add(0, "// Generated from ${project.groupId}/${project.artifactId}/${project.version}")
+            outputFile.text = activeModules.join(System.lineSeparator)
+        }
+    }
+}
diff --git a/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ReadmeGenerator.groovy b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ReadmeGenerator.groovy
new file mode 100644
index 000000000..5010395ea
--- /dev/null
+++ b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/ReadmeGenerator.groovy
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.fd.honeycomb.common.scripts
+
+import groovy.text.SimpleTemplateEngine
+
+import java.nio.file.Files
+import java.nio.file.Paths
+
+/**
+ * Check/generate and repair Readme.adoc for a honeycomb module.
+ */
+class ReadmeGenerator {
+
+    static final def DEFAULT_README = ModulesListGenerator.getResource("/readme/readmeDefaultContent").text
+
+    static final def ADOC_FOLDER = "asciidoc"
+    static final def README = "Readme"
+    static final def README_FILE = "${README}.adoc"
+    static final def README_HTML = "${README}.html"
+    static final def SITE_FOLDER = "site"
+    static final def INDEX_HTML = "index.html"
+
+    public static void checkReadme(project, properties, log) {
+        log.info "Checking ${ADOC_FOLDER}/${README_FILE}"
+        def asciidoc = Paths.get(project.getBasedir().toString(), ADOC_FOLDER)
+        def readme = Paths.get(asciidoc.toString(), README_FILE)
+        if (!Files.exists(readme)) {
+            log.info "Generating ${readme}"
+            Files.createDirectories(asciidoc)
+            Files.createFile(readme)
+            readme.toFile().text = new SimpleTemplateEngine().createTemplate(DEFAULT_README)
+                    .make(["artifactId": project.artifactId])
+                    .toString()
+        }
+    }
+
+    public static void fixSite(project, properties, log) {
+        def index = Paths.get(project.build.directory.toString(), SITE_FOLDER, INDEX_HTML)
+        if (Files.exists(index)) {
+            log.info "Fixing links in generated site"
+            def html = index.toFile().text
+            log.info "Fixing ${ADOC_FOLDER} ${README_HTML} link"
+            index.toFile().text = html.replaceAll("[./]*${README}\\.html", README_HTML)
+        }
+    }
+}
diff --git a/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/StartupScriptGenerator.groovy b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/StartupScriptGenerator.groovy
new file mode 100644
index 000000000..65245b2e0
--- /dev/null
+++ b/common/common-scripts/src/main/groovy/io/fd/honeycomb/common/scripts/StartupScriptGenerator.groovy
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ *
+ * 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.fd.honeycomb.common.scripts
+
+import groovy.text.SimpleTemplateEngine
+
+import java.nio.file.Path
+import java.nio.file.Paths
+
+/**
+ * Generate startup shell scripts for a honeycomb distribution.
+ */
+class StartupScriptGenerator {
+
+    static final def DEFAULT_START_SCRIPT_TEMPLATE = StartupScriptGenerator.getResource("/scripts/startScript").text
+    static final def FORK_SCRIPT_TEMPLATE = StartupScriptGenerator.getResource("/scripts/forkScript").text
+    static final def KILL_SCRIPT_TEMPLATE = StartupScriptGenerator.getResource("/scripts/killScript").text
+    static final def README_TEMPLATE = StartupScriptGenerator.getResource("/scripts/README").text
+
+    static final def JVM_PARAMS_KEY = "exec.parameters"
+    static final def DEFAULT_ADDITIONAL_JVM_PROPERTIES = ""
+    static final def JVM_DEBUG_PARAMS_KEY = "debug.parameters"
+    static final def START_SCRIPT_TEMPLATE_KEY = "start.script.template"
+    static final def MINIMAL_RESOURCES_FOLDER = "honeycomb-minimal-resources"
+
+    static final def STARTUP_SCRIPT_NAME = "honeycomb"
+    static final def KILL_SCRIPT_NAME = "honeycomb-kill"
+    static final def FORK_STARTUP_SCRIPT_NAME = "honeycomb-start"
+    static final def DEFAULT_DEBUG_JVM_PARAMS = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005"
+
+    public static void generate(project, properties, log) {
+        log.info "Generating honeycomb shell scripts for ${project.artifactId}"
+
+        // JVM params, defined in pom or no special params
+        def additionalJvmParameters = properties.getOrDefault(JVM_PARAMS_KEY, DEFAULT_ADDITIONAL_JVM_PROPERTIES)
+        log.debug "Additional JVM properties: ${additionalJvmParameters}"
+        // Startup script template, can be overridden by property in pom
+        def scriptTemplate = properties.getOrDefault(START_SCRIPT_TEMPLATE_KEY, DEFAULT_START_SCRIPT_TEMPLATE)
+        log.debug "Template used for startup script: ${scriptTemplate}"
+        // JVM debug params, defined in pom or no special params
+        def debugJvmParameters = properties.getOrDefault(JVM_DEBUG_PARAMS_KEY, DEFAULT_DEBUG_JVM_PARAMS)
+        log.debug "Debug JVM properties: ${additionalJvmParameters}"
+
+        def jvmParameters = "${additionalJvmParameters} -jar \$(dirname \$0)/${project.artifactId}-${project.version}.jar"
+        def scriptParent = Paths.get(project.build.outputDirectory, MINIMAL_RESOURCES_FOLDER)
+        scriptParent.toFile().mkdirs()
+
+        def startScriptPath = generateStartupScript(jvmParameters, log, scriptParent, scriptTemplate)
+        def forkScriptPath = generateForkingStartupScript(scriptParent, log)
+        def debugScriptPath = generateDebugStartupScript(debugJvmParameters, jvmParameters, log, scriptParent, scriptTemplate)
+        def killScriptPath = generateKillScript(log, scriptParent)
+        generateReadme(scriptParent, log, startScriptPath, forkScriptPath, debugScriptPath, killScriptPath, project)
+    }
+
+    private static def generateReadme(scriptParent, log,
+                                      startScriptPath, forkScriptPath, debugScriptPath, killScriptPath, project) {
+        def readmePath = Paths.get(scriptParent.toString(), "README")
+
+        def readmeContent = new SimpleTemplateEngine().createTemplate(README_TEMPLATE).make(
+                ["groupId"    : project.groupId,
+                 "artifactId" : project.artifactId,
+                 "version"    : project.version,
+                 "startScript": startScriptPath.fileName,
+                 "forkScript" : forkScriptPath.fileName,
+                 "debugScript": debugScriptPath.fileName,
+                 "killScript" : killScriptPath.fileName]).toString()
+        log.info "Writing README to ${readmePath}"
+        flushScript(readmePath, readmeContent)
+    }
+
+    private static def generateDebugStartupScript(debugJvmParameters, javaArgs, log, Path scriptParent,
+                                                  scriptTemplate) {
+        def exec = "java ${debugJvmParameters} ${javaArgs}"
+        log.info "Debug script content to be used: ${exec}"
+        def scriptPath = Paths.get(scriptParent.toString(), "honeycomb-debug")
+        log.info "Writing shell debug script to ${scriptPath}"
+        flushScript(scriptPath, new SimpleTemplateEngine().createTemplate(scriptTemplate).make(["exec": exec]).toString())
+    }
+
+    private static def generateForkingStartupScript(scriptParent, log) {
+        def scriptPath = Paths.get(scriptParent.toString(), FORK_STARTUP_SCRIPT_NAME)
+        log.info "Writing forking startup script to ${scriptPath}"
+        flushScript(scriptPath, new SimpleTemplateEngine().createTemplate(FORK_SCRIPT_TEMPLATE).make().toString())
+    }
+
+    private static def flushScript(filePath, content) {
+        filePath.toFile().text = content
+        filePath.toFile().setExecutable(true)
+        filePath
+    }
+
+    private static def generateStartupScript(javaArgs, log, scriptParent, scriptTemplate) {
+        def exec = "java ${javaArgs}"
+        log.info "Startup script content to be used: ${exec}"
+        def scriptPath = Paths.get(scriptParent.toString(), STARTUP_SCRIPT_NAME)
+        log.info "Writing startup script to ${scriptPath}"
+        flushScript(scriptPath, new SimpleTemplateEngine().createTemplate(scriptTemplate).make(["exec": exec]).toString())
+    }
+
+    private static def generateKillScript(log, scriptParent) {
+        def scriptPath = Paths.get(scriptParent.toString(), KILL_SCRIPT_NAME)
+        log.info "Writing kill script to ${scriptPath}"
+        flushScript(scriptPath, new SimpleTemplateEngine().createTemplate(KILL_SCRIPT_TEMPLATE).make().toString())
+    }
+}