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// Copyright 2014 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.lib.bazel.rules.workspace;
import static com.google.devtools.build.lib.packages.Attribute.attr;
import static com.google.devtools.build.lib.syntax.Type.STRING;
import com.google.devtools.build.lib.analysis.RuleDefinition;
import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
import com.google.devtools.build.lib.packages.RuleClass;
import com.google.devtools.build.lib.packages.RuleClass.Builder;
import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
/**
* Rule definition for the http_jar rule.
*/
public class HttpJarRule implements RuleDefinition {
public static final String NAME = "http_jar";
@Override
public RuleClass build(Builder builder, RuleDefinitionEnvironment environment) {
return builder
/* <!-- #BLAZE_RULE(http_jar).ATTRIBUTE(url) -->
A URL to an archive file containing a Bazel repository.
${SYNOPSIS}
<p>This must be an http or https URL that ends with .jar. Redirections are followed.</p>
<!-- #END_BLAZE_RULE.ATTRIBUTE --> */
.add(attr("url", STRING).mandatory())
/* <!-- #BLAZE_RULE(http_jar).ATTRIBUTE(sha256) -->
The expected SHA-256 of the file downloaded.
${SYNOPSIS}
<p>This must match the SHA-256 of the file downloaded.</p>
<!-- #END_BLAZE_RULE.ATTRIBUTE --> */
.add(attr("sha256", STRING).mandatory())
.setWorkspaceOnly()
.build();
}
@Override
public Metadata getMetadata() {
return RuleDefinition.Metadata.builder()
.name(HttpJarRule.NAME)
.type(RuleClassType.WORKSPACE)
.ancestors(WorkspaceBaseRule.class)
.factoryClass(WorkspaceConfiguredTargetFactory.class)
.build();
}
}
/*<!-- #BLAZE_RULE (NAME = http_jar, TYPE = OTHER, FAMILY = Workspace)[GENERIC_RULE] -->
${ATTRIBUTE_SIGNATURE}
<p>Downloads a jar from a URL and makes it available to be used as a Java dependency.</p>
<p>Downloaded files must have a .jar extension.</p>
${ATTRIBUTE_DEFINITION}
<h4 id="http_jar_examples">Examples</h4>
<p>Suppose the current repository contains the source code for a chat program, rooted at the
directory <i>~/chat-app</i>. It needs to depend on an SSL library which is available from
<i>http://example.com/openssl-0.2.jar</i>.</p>
<p>Targets in the <i>~/chat-app</i> repository can depend on this target if the following lines are
added to <i>~/chat-app/WORKSPACE</i>:</p>
<pre class="code">
http_jar(
name = "my-ssl",
url = "http://example.com/openssl-0.2.jar",
sha256 = "03a58ac630e59778f328af4bcc4acb4f80208ed4",
)
</pre>
<p>Targets would specify <code>@my-ssl//jar</code> as a dependency to depend on this jar.</p>
<!-- #END_BLAZE_RULE -->*/
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