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// Copyright 2015 Google Inc. All rights reserved.
//
// 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 com.google.devtools.build.workspace.maven;
import com.google.common.collect.Sets;
import com.google.devtools.build.lib.bazel.repository.MavenConnector;
import com.google.devtools.build.lib.events.Event;
import com.google.devtools.build.lib.events.EventHandler;
import org.apache.maven.model.Dependency;
import org.eclipse.aether.artifact.Artifact;
import org.eclipse.aether.artifact.DefaultArtifact;
import java.util.Set;
/**
* A struct representing the fields of maven_jar to be written to the WORKSPACE file.
*/
public final class Rule {
private final Artifact artifact;
private final Set<String> parents;
private String repository;
public Rule(String artifactStr) throws InvalidRuleException {
try {
this.artifact = new DefaultArtifact(artifactStr);
} catch (IllegalArgumentException e) {
throw new InvalidRuleException(e.getMessage());
}
this.parents = Sets.newHashSet();
}
public Rule(Dependency dependency) throws InvalidRuleException {
this(dependency.getGroupId() + ":" + dependency.getArtifactId() + ":"
+ dependency.getVersion());
}
public void addParent(String parent) {
parents.add(parent);
}
public String artifactId() {
return artifact.getArtifactId();
}
public String groupId() {
return artifact.getGroupId();
}
public String version() {
return artifact.getVersion();
}
/**
* A unique name for this artifact to use in maven_jar's name attribute.
*/
String name() {
return Rule.name(groupId(), artifactId());
}
/**
* A unique name for this artifact to use in maven_jar's name attribute.
*/
public static String name(String groupId, String artifactId) {
return (groupId + "/" + artifactId).replaceAll("\\.", "/");
}
public Artifact getArtifact() {
return artifact;
}
public String toMavenArtifactString() {
return groupId() + ":" + artifactId() + ":" + version();
}
public void setRepository(String url, EventHandler handler) {
// url is of the form repository/group/artifact/version/artifact-version.pom. Strip off
// everything after repository/.
int uriStart = url.indexOf(getUri());
if (uriStart == -1) {
// If url is actually a path to a file, it won't match the URL pattern described above.
// However, in that case we also have no way of fetching the artifact, so we'll print a
// warning.
handler.handle(Event.warn(name() + " was defined in " + url
+ " which isn't a repository URL, so we couldn't figure out how to fetch "
+ toMavenArtifactString() + " in a general way. You will need to set the \"repository\""
+ " attribute manually"));
} else {
this.repository = url.substring(0, uriStart);
}
}
private String getUri() {
return groupId().replaceAll("\\.", "/") + "/" + artifactId() + "/" + version() + "/"
+ artifactId() + "-" + version() + ".pom";
}
/**
* The way this jar should be stringified for the WORKSPACE file.
*/
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
for (String parent : parents) {
builder.append("# " + parent + "\n");
}
builder.append("maven_jar(\n"
+ " name = \"" + name() + "\",\n"
+ " artifact = \"" + toMavenArtifactString() + "\",\n"
+ (hasCustomRepository() ? " repository = \"" + repository + "\",\n" : "")
+ ")");
return builder.toString();
}
private boolean hasCustomRepository() {
return repository != null && !repository.equals(MavenConnector.getMavenCentral().getUrl());
}
/**
* Exception thrown if the rule could not be created.
*/
public static class InvalidRuleException extends Exception {
InvalidRuleException(String message) {
super(message);
}
}
}
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