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dependencyConvergence.apt.vm
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dependencyConvergence.apt.vm
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~~ Licensed to the Apache Software Foundation (ASF) under one
~~ or more contributor license agreements. See the NOTICE file
~~ distributed with this work for additional information
~~ regarding copyright ownership. The ASF 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.
-----
Dependency Convergence
-----
-----
2008-09-13
-----
Dependency Convergence
This rule requires that dependency version numbers converge. If a project has two dependencies, A and B, both depending on the same artifact, C, this rule will fail the build if A depends on a different version of C than the version of C depended on by B.
Here is a concrete example.
This will cause a build to fail.
+-----------------------------------------------------------------------------------
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.6.0</version>
</dependency>
</dependencies>
+-----------------------------------------------------------------------------------
With this being logged during compilation
+-----------------------------------------------------------------------------------
Dependency convergence error for org.slf4j:slf4j-api1.6.1 paths to dependency are:
[ERROR]
Dependency convergence error for org.slf4j:slf4j-api:1.6.1 paths to dependency are:
+-org.myorg:my-project:1.0.0-SNAPSHOT
+-org.slf4j:slf4j-jdk14:1.6.1
+-org.slf4j:slf4j-api:1.6.1
and
+-org.myorg:my-project:1.0.0-SNAPSHOT
+-org.slf4j:slf4j-nop:1.6.0
+-org.slf4j:slf4j-api:1.6.0
+-----------------------------------------------------------------------------------
And this will succeed.
+-----------------------------------------------------------------------------------
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.6.0</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
</exclusions>
</dependency>
+-----------------------------------------------------------------------------------
Here is how a project should be setup to use this rule
+-----------------------------------------------------------------------------------
<project>
...
<build>
<plugins>
...
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-enforcer-plugin</artifactId>
<version>${project.version}</version>
<executions>
<execution>
<id>enforce</id>
<configuration>
<rules>
<dependencyConvergence/>
</rules>
</configuration>
<goals>
<goal>enforce</goal>
</goals>
</execution>
</executions>
</plugin>
...
</plugins>
</build>
...
</project>
+-----------------------------------------------------------------------------------
* Timestamped Version
By default the non-unique versions are matched, which means the <<<X.Y-SNAPSHOT>>> instead of the timestamped versions.
If you want to use the unique versions of the dependencies, you can set its property to <<<true>>>.
+---------------------------------------------
<dependencyConvergence>
<uniqueVersions>true</uniqueVersions>
</dependencyConvergence>
+---------------------------------------------
* Filtering Dependency Errors
By default, all dependency convergence errors are reported, and any single error will fail the build. If you want
to tune which dependency errors are reported and fail the build, you can add the following optional parameters:
* <<includes>> - A list of artifacts for which dependency convergence should be enforced. Not specifying any includes
is interpreted the same as including all artifacts.
* <<excludes>> - A list of artifacts for which dependency convergence should not be enforced. These are exceptions
to the includes.
* <<scopes>> - A list of scopes of artifacts for which dependency convergence should be enforced. Not specifying
any scopes is interpreted as having the following scopes activated: compile, runtime, system.
[]
The format for artifacts is groupId[:artifactId][:version][:type][:scope][:classifier] where artifactId, version,
type, scope and classifier are optional. Wildcards may be used to replace an entire section or just parts of a
section. This rule uses the {{{./versionRanges.html}Enforcer version range syntax}} to define allowed versions.
+---------------------------------------------
<dependencyConvergence>
<scopes>
<scope>compile</scope>
<scope>runtime</scope>
</scopes>
<includes>
<include>org.slf4j</include>
<include>org.apache.commons</include>
</includes>
<excludes>
<exclude>org.slf4j:slf4j-jdk14</exclude>
<exclude>org.apache.commons:*:[3.4]</exclude>
</excludes>
</dependencyConvergence>
+---------------------------------------------