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...lient/src/main/java/co/elastic/clients/transport/rest_client/LanguageRuntimeVersions.java
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| /* | ||
| * Licensed to Elasticsearch B.V. under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch B.V. 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 co.elastic.clients.transport.rest_client; | ||
|
|
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| // Copied verbatim from https://github.com/elastic/jvm-languages-sniffer | ||
|
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| import java.lang.reflect.Field; | ||
| import java.lang.reflect.Method; | ||
|
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| class LanguageRuntimeVersions { | ||
|
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| /** | ||
| * Returns runtime information by looking up classes identifying non-Java JVM | ||
| * languages and appending a key with their name and their major.minor version, if available | ||
| */ | ||
| public static String getRuntimeMetadata() { | ||
| StringBuilder s = new StringBuilder(); | ||
| String version; | ||
|
|
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| version = kotlinVersion(); | ||
| if (version != null) { | ||
| s.append(",kt=").append(version); | ||
| } | ||
|
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| version = scalaVersion(); | ||
| if (version != null) { | ||
| s.append(",sc=").append(version); | ||
| } | ||
|
|
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| version = clojureVersion(); | ||
| if (version != null) { | ||
| s.append(",clj=").append(version); | ||
| } | ||
|
|
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| version = groovyVersion(); | ||
| if (version != null) { | ||
| s.append(",gy=").append(version); | ||
| } | ||
|
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| version = jRubyVersion(); | ||
| if (version != null) { | ||
| s.append(",jrb=").append(version); | ||
| } | ||
|
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| return s.toString(); | ||
| } | ||
|
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| public static String kotlinVersion() { | ||
| // KotlinVersion.CURRENT.toString() | ||
| return keepMajorMinor(getStaticField("kotlin.KotlinVersion", "CURRENT")); | ||
| } | ||
|
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| public static String scalaVersion() { | ||
| // scala.util.Properties.versionNumberString() | ||
| return keepMajorMinor(callStaticMethod("scala.util.Properties", "versionNumberString")); | ||
| } | ||
|
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| public static String clojureVersion() { | ||
| // (clojure-version) which translates to | ||
| // clojure.core$clojure_version.invokeStatic() | ||
| return keepMajorMinor(callStaticMethod("clojure.core$clojure_version", "invokeStatic")); | ||
| } | ||
|
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| public static String groovyVersion() { | ||
| // groovy.lang.GroovySystem.getVersion() | ||
| // There's also getShortVersion(), but only since Groovy 3.0.1 | ||
| return keepMajorMinor(callStaticMethod("groovy.lang.GroovySystem", "getVersion")); | ||
| } | ||
|
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| public static String jRubyVersion() { | ||
| // org.jruby.runtime.Constants.VERSION | ||
| return keepMajorMinor(getStaticField("org.jruby.runtime.Constants", "VERSION")); | ||
| } | ||
|
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| private static String getStaticField(String className, String fieldName) { | ||
| Class<?> clazz; | ||
| try { | ||
| clazz = Class.forName(className); | ||
| } catch (ClassNotFoundException e) { | ||
| return null; | ||
| } | ||
|
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| try { | ||
| Field field = clazz.getField(fieldName); | ||
| return field.get(null).toString(); | ||
| } catch (Exception e) { | ||
| return ""; // can't get version information | ||
| } | ||
| } | ||
|
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| private static String callStaticMethod(String className, String methodName) { | ||
| Class<?> clazz; | ||
| try { | ||
| clazz = Class.forName(className); | ||
| } catch (ClassNotFoundException e) { | ||
| return null; | ||
| } | ||
|
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| try { | ||
| Method m = clazz.getMethod(methodName); | ||
| return m.invoke(null).toString(); | ||
| } catch (Exception e) { | ||
| return ""; // can't get version information | ||
| } | ||
| } | ||
|
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| static String keepMajorMinor(String version) { | ||
| if (version == null) { | ||
| return null; | ||
| } | ||
|
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| int firstDot = version.indexOf('.'); | ||
| int secondDot = version.indexOf('.', firstDot + 1); | ||
| if (secondDot < 0) { | ||
| return version; | ||
| } else { | ||
| return version.substring(0, secondDot); | ||
| } | ||
| } | ||
| } |
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