https://github.com/elastic/elasticsearch/blob/master/CONTRIBUTING.md
不同的版本需要指定JDK
可以下載openJDK版本到服務器上，下載過程比較慢
https://jdk.java.net/archive/
export JAVA_HOME=/xxx/yyy/jdk10.xxx
/gradle assemble
執行命令后
生產的結果在distributions目錄下, 啟動跟自己下載的版本一樣，一樣會遇到權限問題，chown xxx -R 目錄解決一下
.
├── archives
│ ├── build
│ │ ├── logs-hack
│ │ │ └── logs
│ │ └── plugins-hack
│ │ └── plugins
│ ├── build.gradle
│ ├── integ-test-zip
│ │ ├── build
│ │ │ ├── distributions
│ │ │ │ ├── elasticsearch-6.4.4-SNAPSHOT.pom
│ │ │ │ └── elasticsearch-6.4.4-SNAPSHOT.zip
│ │ │ ├── heapdump
│ │ │ └── publications
│ │ │ ├── nebula
│ │ │ │ └── pom-default.xml
│ │ │ └── nebulaRealPom
│ │ │ └── pom-default.xml
│ │ ├── build.gradle
│ │ └── src
│ │ └── test
│ │ └── java
│ │ └── org
│ │ └── elasticsearch
│ │ └── test
│ │ └── rest
│ │ ├── CreatedLocationHeaderIT.java
│ │ ├── DefaultShardsIT.java
│ │ ├── IntegTestZipClientYamlTestSuiteIT.java
│ │ ├── NodeRestUsageIT.java
│ │ ├── RequestsWithoutContentIT.java
│ │ └── WaitForRefreshAndCloseTests.java
│ ├── oss-tar
│ │ ├── build
│ │ │ └── distributions
│ │ │ └── elasticsearch-oss-6.4.4-SNAPSHOT.tar.gz
│ │ └── build.gradle
│ ├── oss-zip
│ │ ├── build
│ │ │ ├── distributions
│ │ │ │ ├── elasticsearch-oss-6.4.4-SNAPSHOT.pom
│ │ │ │ └── elasticsearch-oss-6.4.4-SNAPSHOT.zip
│ │ │ └── publications
│ │ │ ├── nebula
│ │ │ │ └── pom-default.xml
│ │ │ └── nebulaRealPom
│ │ │ └── pom-default.xml
│ │ └── build.gradle
│ ├── tar
│ │ ├── build
│ │ │ └── distributions
│ │ │ └── elasticsearch-6.4.4-SNAPSHOT.tar.gz
│ │ └── build.gradle
│ └── zip
│ ├── build
│ │ ├── distributions
│ │ │ ├── elasticsearch-6.4.4-SNAPSHOT.pom
│ │ │ └── elasticsearch-6.4.4-SNAPSHOT.zip
│ │ └── publications
│ │ ├── nebula
│ │ │ └── pom-default.xml
│ │ └── nebulaRealPom
│ │ └── pom-default.xml
│ └── build.gradle
├── build
│ ├── cluster
│ │ ├── run\ node0
│ │ │ ├── cwd
│ │ │ └── elasticsearch-6.4.4-SNAPSHOT
│ │ │ ├── bin
│ │ │ │ ├── elasticsearch
│ │ │ │ ├── elasticsearch.bat
│ │ │ │ ├── elasticsearch-certgen
│ │ │ │ ├── elasticsearch-certgen.bat
│ │ │ │ ├── elasticsearch-certutil
│ │ │ │ ├── elasticsearch-certutil.bat
│ │ │ │ ├── elasticsearch-cli
│ │ │ │ ├── elasticsearch-cli.bat
es 的文檔告訴大家，請不要把貢獻代碼作為課程的一部分，希望大家是自願的貢獻代碼。同時在之前他們也說明不要為了重構而重構，因為測試，review要花費巨大的資源。如果要提交新的特性，請先開一個issue，討論是否有必要才開始動手寫代碼。
Contributing as part of a class
In general Elasticsearch is happy to accept contributions that were created as part of a class but strongly advise against making the contribution as part of the class. So if you have code you wrote for a class feel free to submit it.
Please, please, please do not assign contributing to Elasticsearch as part of a class. If you really want to assign writing code for Elasticsearch as an assignment then the code contributions should be made to your private clone and opening PRs against the primary Elasticsearch clone must be optional, fully voluntary, not for a grade, and without any deadlines.
Because:
- While the code review process is likely very educational, it can take wildly varying amounts of time depending on who is available, where the change is, and how deep the change is. There is no way to predict how long it will take unless we rush.
- We do not rush reviews without a very, very good reason. Class deadlines aren't a good enough reason for us to rush reviews.
- We deeply discourage opening a PR you don't intend to work through the entire code review process because it wastes our time.
- We don't have the capacity to absorb an entire class full of new contributors, especially when they are unlikely to become long time contributors.
Finally, we require that you run
./gradlew checkbefore submitting a non-documentation contribution. This is mentioned above, but it is worth repeating in this section because it has come up in this context.
FAILURE: Build failed with an exception.
* What went wrong:
Could not determine the dependencies of task ':x-pack:qa:full-cluster-restart:with-system-key:v5.6.15-SNAPSHOT#oldClusterTestCluster#node1.copyBwcPlugins'.
> Could not resolve all task dependencies for configuration ':x-pack:qa:full-cluster-restart:with-system-key:v5.6.15-SNAPSHOT#oldClusterTestCluster_elasticsearchBwcPlugins'.
> Could not resolve org.elasticsearch.plugin:x-pack:5.6.15-SNAPSHOT.
Required by:
project :x-pack:qa:full-cluster-restart:with-system-key
> Could not resolve org.elasticsearch.plugin:x-pack:5.6.15-SNAPSHOT.
> Unable to load Maven meta-data from https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml.
> Could not get resource 'https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml'.
> Could not GET 'https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml'.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
export JAVA_HOME=/usr/share/jdk1.5.0_05
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
javac InstallCert.java
java InstallCert
執行過程中，輸入1，在當前目錄生成一個文件
手動復制到目錄：$JAVA_HOME/lib/security/cacerts
/* * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ import java.io.*; import java.net.URL; import java.security.*; import java.security.cert.*; import javax.net.ssl.*; public class InstallCert { public static void main(String[] args) throws Exception { String host = "10.0.31.32"; //輸入服務端地址 int port = 8443; //輸入服務端端口 一般默認443 String p = "changeit"; //一般默認changeit char[] passphrase = p.toCharArray(); File file = new File("jssecacerts"); if (file.isFile() == false) { char SEP = File.separatorChar; File dir = new File(System.getProperty("java.home") + SEP + "lib" + SEP + "security"); file = new File(dir, "jssecacerts"); if (file.isFile() == false) { file = new File(dir, "cacerts"); } } System.out.println("Loading KeyStore " + file + "..."); InputStream in = new FileInputStream(file); KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType()); ks.load(in, passphrase); in.close(); SSLContext context = SSLContext.getInstance("TLS"); TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm()); tmf.init(ks); X509TrustManager defaultTrustManager = (X509TrustManager)tmf.getTrustManagers()[0]; SavingTrustManager tm = new SavingTrustManager(defaultTrustManager); context.init(null, new TrustManager[] {tm}, null); SSLSocketFactory factory = context.getSocketFactory(); System.out.println("Opening connection to " + host + ":" + port + "..."); SSLSocket socket = (SSLSocket)factory.createSocket(host, port); socket.setSoTimeout(10000); try { System.out.println("Starting SSL handshake..."); socket.startHandshake(); socket.close(); System.out.println(); System.out.println("No errors, certificate is already trusted"); } catch (SSLException e) { System.out.println(); e.printStackTrace(System.out); } X509Certificate[] chain = tm.chain; if (chain == null) { System.out.println("Could not obtain server certificate chain"); return; } BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); System.out.println(); System.out.println("Server sent " + chain.length + " certificate(s):"); System.out.println(); MessageDigest sha1 = MessageDigest.getInstance("SHA1"); MessageDigest md5 = MessageDigest.getInstance("MD5"); for (int i = 0; i < chain.length; i++) { X509Certificate cert = chain[i]; System.out.println (" " + (i + 1) + " Subject " + cert.getSubjectDN()); System.out.println(" Issuer " + cert.getIssuerDN()); sha1.update(cert.getEncoded()); System.out.println(" sha1 " + toHexString(sha1.digest())); md5.update(cert.getEncoded()); System.out.println(" md5 " + toHexString(md5.digest())); System.out.println(); } System.out.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]"); String line = reader.readLine().trim(); int k; try { k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1; } catch (NumberFormatException e) { System.out.println("KeyStore not changed"); return; } X509Certificate cert = chain[k]; String alias = host + "-" + (k + 1); ks.setCertificateEntry(alias, cert); OutputStream out = new FileOutputStream("jssecacerts"); ks.store(out, passphrase); out.close(); System.out.println(); System.out.println(cert); System.out.println(); System.out.println ("Added certificate to keystore 'jssecacerts' using alias '" + alias + "'"); } private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray(); private static String toHexString(byte[] bytes) { StringBuilder sb = new StringBuilder(bytes.length * 3); for (int b : bytes) { b &= 0xff; sb.append(HEXDIGITS[b >> 4]); sb.append(HEXDIGITS[b & 15]); sb.append(' '); } return sb.toString(); } private static class SavingTrustManager implements X509TrustManager { private final X509TrustManager tm; private X509Certificate[] chain; SavingTrustManager(X509TrustManager tm) { this.tm = tm; } public X509Certificate[] getAcceptedIssuers() { throw new UnsupportedOperationException(); } public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { throw new UnsupportedOperationException(); } public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { this.chain = chain; tm.checkServerTrusted(chain, authType); } } } ---------------------
6.4 分支能編譯，能運行起來，但是單元測試老是提示找不到 5.X的一個包，估計是拿來做兼容測試的。
=======================================
Elasticsearch Build Hamster says Hello!
=======================================
Gradle Version : 4.9
OS Info : Linux 3.10.0-862.el7.x86_64 (amd64)
JDK Version : Oracle Corporation 10.0.2 [OpenJDK 64-Bit Server VM 10.0.2+13]
JAVA_HOME : /data/dev/jdk-10.0.2
Random Testing Seed : 9DAA18E0EFB8B8EEFAILURE: Build failed with an exception.
* What went wrong:
Could not determine the dependencies of task ':x-pack:qa:full-cluster-restart:with-system-key:v5.6.15-SNAPSHOT#oldClusterTestCluster#node1.copyBwcPlugins'.
> Could not resolve all task dependencies for configuration ':x-pack:qa:full-cluster-restart:with-system-key:v5.6.15-SNAPSHOT#oldClusterTestCluster_elasticsearchBwcPlugins'.
> Could not find org.elasticsearch.plugin:x-pack:5.6.15-SNAPSHOT.
Searched in the following locations:
- https://repo.maven.apache.org/maven2/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml
- https://repo.maven.apache.org/maven2/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.pom
- https://repo.maven.apache.org/maven2/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.zip
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.pom
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.zip
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.pom
- https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.zip
- https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/maven-metadata.xml
- https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.pom
- https://snapshots.elastic.co/maven/org/elasticsearch/plugin/x-pack/5.6.15-SNAPSHOT/x-pack-5.6.15-SNAPSHOT.zip
Required by:
project :x-pack:qa:full-cluster-restart:with-system-key
git check master
重新執行，發現中文的提示，導致測試用例不過。
Suite: Test class org.elasticsearch.plugins.PluginsServiceTests
1> [2019-04-30T09:42:28,120][INFO ][o.e.p.PluginsServiceTests] [testDesktopServicesStoreFiles] before test
1> [2019-04-30T09:42:28,337][INFO ][o.e.p.PluginsServiceTests] [testDesktopServicesStoreFiles] after test
2> REPRODUCE WITH: ./gradlew :server:test --tests "org.elasticsearch.plugins.PluginsServiceTests.testDesktopServicesStoreFiles" -Dtests.seed=9EA3ED2F64F1D310 -Dtests.security.manager=true -Dtests.locale=hr-BA -Dtests.timezone=EST5EDT -Dcompiler.java=12 -Druntime.java=12
2> java.lang.AssertionError:
Expected: with toString() a string containing "Not a directory"
but: toString() was "java.nio.file.FileSystemException: /data/dev/elasticsearch/server/build/testrun/test/temp/org.elasticsearch.plugins.PluginsServiceTests_9EA3ED2F64F1D310-002/tempDir-002/plugins/.DS_Store/plugin-descriptor.properties: 不是目錄"
at __randomizedtesting.SeedInfo.seed([9EA3ED2F64F1D310:C91D147EEA92C17A]:0)
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
at org.junit.Assert.assertThat(Assert.java:956)
at org.junit.Assert.assertThat(Assert.java:923)
啟動過程如果提示max file open too low可以執行這個
sudo sh -c "ulimit -n 65536 && exec su $LOGNAME"