/*
* ModeShape (http://www.modeshape.org)
*
* 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 org.modeshape.connector.git;
import java.io.IOException;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.modeshape.schematic.document.Document;
import org.modeshape.jcr.spi.federation.DocumentWriter;
import org.modeshape.jcr.spi.federation.PageKey;
import org.modeshape.jcr.spi.federation.PageWriter;
/**
* A {@link GitFunction} that returns the history information about the (latest) commits in a particular branch or tag. The
* structure of this area of the repository is as follows:
*
* <pre>
* /commits/{branchOrTagNameOrObjectId}/{objectId}
* </pre>
*/
public class GitHistory extends GitFunction implements PageableGitFunction {
protected static Object referenceToHistory( ObjectId id,
String branchOrTagName,
Values values ) {
return values.referenceTo(ID + DELIMITER + branchOrTagName + DELIMITER + id.getName());
}
protected static final String NAME = "commits";
protected static final String ID = "/commits";
protected static int DEFAULT_PAGE_SIZE = 15;
private int pageSize = DEFAULT_PAGE_SIZE;
public GitHistory( GitConnector connector ) {
super(NAME, connector);
}
@Override
public boolean isPaged() {
return true;
}
@Override
public Document execute( Repository repository,
Git git,
CallSpecification spec,
DocumentWriter writer,
Values values ) throws GitAPIException, IOException {
if (spec.parameterCount() == 0) {
// This is the top-level "/commits" node
writer.setPrimaryType(GitLexicon.COMMITS);
// Generate the child references to the branches, tags, and commits in the history ...
addBranchesAsChildren(git, spec, writer);
addTagsAsChildren(git, spec, writer);
addCommitsAsChildren(git, spec, writer, pageSize);
} else if (spec.parameterCount() == 1) {
// This is the top-level "/commits/{branchOrTagNameOrObjectId}" node
writer.setPrimaryType(GitLexicon.OBJECT);
addCommitsAsChildren(git, spec, writer, pageSize);
} else if (spec.parameterCount() == 2) {
// This is a specific commit in the history, via "/commits/{branchOrTagNameOrObjectId}/{objectId}"
writer.setPrimaryType(GitLexicon.COMMIT);
// so we need to show the commit information ...
RevWalk walker = new RevWalk(repository);
try {
String commitId = spec.parameter(1);
ObjectId objId = repository.resolve(commitId);
RevCommit commit = walker.parseCommit(objId);
writer.addProperty(GitLexicon.OBJECT_ID, objId.name());
writer.addProperty(GitLexicon.AUTHOR, authorName(commit));
writer.addProperty(GitLexicon.COMMITTER, commiterName(commit));
writer.addProperty(GitLexicon.COMMITTED, values.dateFrom(commit.getCommitTime()));
writer.addProperty(GitLexicon.TITLE, commit.getShortMessage());
writer.addProperty(GitLexicon.TREE, GitTree.referenceToTree(objId, objId.name(), values));
writer.addProperty(GitLexicon.DETAIL, GitCommitDetails.referenceToCommit(objId, values));
// And there are no children
} finally {
walker.dispose();
}
} else {
return null;
}
return writer.document();
}
@Override
public Document execute( Repository repository,
Git git,
CallSpecification spec,
PageWriter writer,
Values values,
PageKey pageKey ) throws GitAPIException, IOException {
// List the next page of commits ...
addCommitsAsPageOfChildren(git, repository, spec, writer, pageKey);
return writer.document();
}
}