140 lines
6.1 KiB
Markdown
140 lines
6.1 KiB
Markdown
---
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id: pull-deps
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title: "pull-deps tool"
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---
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<!--
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~ Licensed to the Apache Software Foundation (ASF) under one
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~ or more contributor license agreements. See the NOTICE file
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~ distributed with this work for additional information
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~ regarding copyright ownership. The ASF licenses this file
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~ to you under the Apache License, Version 2.0 (the
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~ "License"); you may not use this file except in compliance
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~ with the License. You may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~ specific language governing permissions and limitations
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~ under the License.
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`pull-deps` is an Apache Druid tool that can pull down dependencies to the local repository and lay dependencies out into the extension directory as needed.
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`pull-deps` has several command line options, they are as follows:
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`-c` or `--coordinate` (Can be specified multiple times)
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Extension coordinate to pull down, followed by a maven coordinate, e.g. org.apache.druid.extensions:mysql-metadata-storage
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`-h` or `--hadoop-coordinate` (Can be specified multiply times)
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Apache Hadoop dependency to pull down, followed by a maven coordinate, e.g. org.apache.hadoop:hadoop-client:2.4.0
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`--no-default-hadoop`
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Don't pull down the default hadoop coordinate, i.e., org.apache.hadoop:hadoop-client:2.3.0. If `-h` option is supplied, then default hadoop coordinate will not be downloaded.
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`--clean`
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Remove existing extension and hadoop dependencies directories before pulling down dependencies.
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`-l` or `--localRepository`
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A local repository that Maven will use to put downloaded files. Then pull-deps will lay these files out into the extensions directory as needed.
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`-r` or `--remoteRepository`
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Add a remote repository. Unless `--no-default-remote-repositories` is provided, these will be used after https://repo1.maven.org/maven2/ and http://metamx.artifactoryonline.com/metamx/pub-libs-releases-local
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`--no-default-remote-repositories`
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Don't use the default remote repositories, only use the repositories provided directly via --remoteRepository.
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`-d` or `--defaultVersion`
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Version to use for extension coordinate that doesn't have a version information. For example, if extension coordinate is `org.apache.druid.extensions:mysql-metadata-storage`, and default version is `{{DRUIDVERSION}}`, then this coordinate will be treated as `org.apache.druid.extensions:mysql-metadata-storage:{{DRUIDVERSION}}`
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`--use-proxy`
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Use http/https proxy to send request to the remote repository servers. `--proxy-host` and `--proxy-port` must be set explicitly if this option is enabled.
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`--proxy-type`
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Set the proxy type, Should be either *http* or *https*, default value is *https*.
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`--proxy-host`
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Set the proxy host. e.g. proxy.com.
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`--proxy-port`
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Set the proxy port number. e.g. 8080.
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`--proxy-username`
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Set a username to connect to the proxy, this option is only required if the proxy server uses authentication.
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`--proxy-password`
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Set a password to connect to the proxy, this option is only required if the proxy server uses authentication.
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To run `pull-deps`, you should
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1) Specify `druid.extensions.directory` and `druid.extensions.hadoopDependenciesDir`, these two properties tell `pull-deps` where to put extensions. If you don't specify them, default values will be used, see [Configuration](../configuration/index.md).
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2) Tell `pull-deps` what to download using `-c` or `-h` option, which are followed by a maven coordinate.
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Example:
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Suppose you want to download ```mysql-metadata-storage``` and ```hadoop-client```(both 2.3.0 and 2.4.0) with a specific version, you can run `pull-deps` command with `-c org.apache.druid.extensions:mysql-metadata-storage:{{DRUIDVERSION}}`, `-h org.apache.hadoop:hadoop-client:2.3.0` and `-h org.apache.hadoop:hadoop-client:2.4.0`, an example command would be:
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```
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java -classpath "/my/druid/lib/*" org.apache.druid.cli.Main tools pull-deps --clean -c org.apache.druid.extensions:mysql-metadata-storage:{{DRUIDVERSION}} -h org.apache.hadoop:hadoop-client:2.3.0 -h org.apache.hadoop:hadoop-client:2.4.0
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```
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Because `--clean` is supplied, this command will first remove the directories specified at `druid.extensions.directory` and `druid.extensions.hadoopDependenciesDir`, then recreate them and start downloading the extensions there. After finishing downloading, if you go to the extension directories you specified, you will see
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```
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tree extensions
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extensions
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└── mysql-metadata-storage
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└── mysql-metadata-storage-{{DRUIDVERSION}}.jar
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```
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```
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tree hadoop-dependencies
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hadoop-dependencies/
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└── hadoop-client
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├── 2.3.0
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│ ├── activation-1.1.jar
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│ ├── avro-1.7.4.jar
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│ ├── commons-beanutils-1.7.0.jar
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│ ├── commons-beanutils-core-1.8.0.jar
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│ ├── commons-cli-1.2.jar
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│ ├── commons-codec-1.4.jar
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..... lots of jars
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└── 2.4.0
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├── activation-1.1.jar
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├── avro-1.7.4.jar
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├── commons-beanutils-1.7.0.jar
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├── commons-beanutils-core-1.8.0.jar
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├── commons-cli-1.2.jar
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├── commons-codec-1.4.jar
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..... lots of jars
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```
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Note that if you specify `--defaultVersion`, you don't have to put version information in the coordinate. For example, if you want `mysql-metadata-storage` to use version `{{DRUIDVERSION}}`, you can change the command above to
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```
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java -classpath "/my/druid/lib/*" org.apache.druid.cli.Main tools pull-deps --defaultVersion {{DRUIDVERSION}} --clean -c org.apache.druid.extensions:mysql-metadata-storage -h org.apache.hadoop:hadoop-client:2.3.0 -h org.apache.hadoop:hadoop-client:2.4.0
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```
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> Please note to use the pull-deps tool you must know the Maven groupId, artifactId, and version of your extension.
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>
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> For Druid community extensions listed [here](../development/extensions.md), the groupId is "org.apache.druid.extensions.contrib" and the artifactId is the name of the extension.
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