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Java Connector for GitHub API
/******************************************************************************
* Copyright (c) 2011 GitHub Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Kevin Sawicki (GitHub Inc.) - initial API and implementation
*****************************************************************************/
package com.jdroid.github.service;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_BLOBS;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_COMMITS;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_GIT;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_REFS;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_REPOS;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_TAGS;
import static com.jdroid.github.client.IGitHubConstants.SEGMENT_TREES;
import com.google.gson.reflect.TypeToken;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.jdroid.github.Blob;
import com.jdroid.github.Commit;
import com.jdroid.github.IRepositoryIdProvider;
import com.jdroid.github.Reference;
import com.jdroid.github.ShaResource;
import com.jdroid.github.Tag;
import com.jdroid.github.Tree;
import com.jdroid.github.TreeEntry;
import com.jdroid.github.TypedResource;
import com.jdroid.github.client.GitHubClient;
import com.jdroid.github.client.GitHubRequest;
import com.jdroid.github.client.PagedRequest;
/**
* Data service class for low-level access to Git repository data.
*
* @see GitHub data API
* documentation
*/
public class DataService extends GitHubService {
/**
* Create data service
*/
public DataService() {
super();
}
/**
* Create data service
*
* @param client
*/
public DataService(GitHubClient client) {
super(client);
}
/**
* Get blob for given SHA-1
*
* @param repository
* @param sha
* @return blob
* @throws IOException
*/
public Blob getBlob(IRepositoryIdProvider repository, String sha)
throws IOException {
final String id = getId(repository);
if (sha == null)
throw new IllegalArgumentException("SHA-1 cannot be null"); //$NON-NLS-1$
if (sha.length() == 0)
throw new IllegalArgumentException("SHA-1 cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_BLOBS);
uri.append('/').append(sha);
GitHubRequest request = createRequest();
request.setType(Blob.class);
request.setUri(uri);
return (Blob) client.get(request).getBody();
}
/**
* Create blob with given content
*
* @param repository
* @param blob
* @return SHA-1 of created blob
* @throws IOException
*/
public String createBlob(IRepositoryIdProvider repository, Blob blob)
throws IOException {
final String id = getId(repository);
if (blob == null)
throw new IllegalArgumentException("Blob cannot be null"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_BLOBS);
ShaResource created = client.post(uri.toString(), blob,
ShaResource.class);
return created != null ? created.getSha() : null;
}
/**
* Get tree with given SHA-1
*
* @param repository
* @param sha
* @return tree
* @throws IOException
*/
public Tree getTree(IRepositoryIdProvider repository, String sha)
throws IOException {
return getTree(repository, sha, false);
}
/**
* Get tree with given SHA-1
*
* @param repository
* @param sha
* @param recursive
* @return tree
* @throws IOException
*/
public Tree getTree(IRepositoryIdProvider repository, String sha,
boolean recursive) throws IOException {
final String id = getId(repository);
if (sha == null)
throw new IllegalArgumentException("SHA-1 cannot be null"); //$NON-NLS-1$
if (sha.length() == 0)
throw new IllegalArgumentException("SHA-1 cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_TREES);
uri.append('/').append(sha);
GitHubRequest request = createRequest();
request.setType(Tree.class);
request.setUri(uri);
if (recursive)
request.setParams(Collections.singletonMap("recursive", "1")); //$NON-NLS-1$ //$NON-NLS-2$
return (Tree) client.get(request).getBody();
}
/**
* Create tree
*
* @param repository
* @param entries
* @return created tree
* @throws IOException
*/
public Tree createTree(IRepositoryIdProvider repository,
Collection entries) throws IOException {
return createTree(repository, entries, null);
}
/**
* Create tree
*
* @param repository
* @param entries
* @param baseTree
* @return created tree
* @throws IOException
*/
public Tree createTree(IRepositoryIdProvider repository,
Collection entries, String baseTree) throws IOException {
final String id = getId(repository);
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_TREES);
GitHubRequest request = createRequest();
request.setType(Tree.class);
request.setUri(uri);
Map params = new HashMap();
if (entries != null)
params.put("tree", entries.toArray()); //$NON-NLS-1$
if (baseTree != null)
params.put("base_tree", baseTree); //$NON-NLS-1$
return client.post(uri.toString(), params, Tree.class);
}
/**
* Get reference with given name
*
* @param repository
* @param name
* @return reference
* @throws IOException
*/
public Reference getReference(IRepositoryIdProvider repository, String name)
throws IOException {
final String id = getId(repository);
if (name == null)
throw new IllegalArgumentException("Name cannot be null"); //$NON-NLS-1$
if (name.length() == 0)
throw new IllegalArgumentException("Name cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
if (!name.startsWith("refs/")) //$NON-NLS-1$
uri.append(SEGMENT_REFS);
uri.append('/').append(name);
GitHubRequest request = createRequest();
request.setType(Reference.class);
request.setUri(uri);
return (Reference) client.get(request).getBody();
}
/**
* Get references for given repository
*
* @param repository
* @return non-null but possibly empty list of references
* @throws IOException
*/
public List getReferences(IRepositoryIdProvider repository)
throws IOException {
final String id = getId(repository);
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_REFS);
PagedRequest request = createPagedRequest();
request.setType(new TypeToken>() {
}.getType());
request.setUri(uri);
return getAll(request);
}
/**
* Create reference
*
* @param repository
* @param reference
* @return created reference
* @throws IOException
*/
public Reference createReference(IRepositoryIdProvider repository,
Reference reference) throws IOException {
final String id = getId(repository);
if (reference == null)
throw new IllegalArgumentException("Reference cannot be null"); //$NON-NLS-1$
TypedResource object = reference.getObject();
if (object == null)
throw new IllegalArgumentException(
"Reference object cannot be null"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_REFS);
Map params = new HashMap();
params.put("sha", object.getSha()); //$NON-NLS-1$
params.put("ref", reference.getRef()); //$NON-NLS-1$
return client.post(uri.toString(), params, Reference.class);
}
/**
* Edit reference
*
* @param repository
* @param reference
* @return updated reference
* @throws IOException
*/
public Reference editReference(IRepositoryIdProvider repository,
Reference reference) throws IOException {
return editReference(repository, reference, false);
}
/**
* Edit reference
*
* @param repository
* @param reference
* @param force
* @return updated reference
* @throws IOException
*/
public Reference editReference(IRepositoryIdProvider repository,
Reference reference, boolean force) throws IOException {
final String id = getId(repository);
if (reference == null)
throw new IllegalArgumentException("Reference cannot be null"); //$NON-NLS-1$
TypedResource object = reference.getObject();
if (object == null)
throw new IllegalArgumentException("Object cannot be null"); //$NON-NLS-1$
String ref = reference.getRef();
if (ref == null)
throw new IllegalArgumentException("Ref cannot be null"); //$NON-NLS-1$
if (ref.length() == 0)
throw new IllegalArgumentException("Ref cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
if (!ref.startsWith("refs/")) //$NON-NLS-1$
uri.append(SEGMENT_REFS);
uri.append('/').append(ref);
Map params = new HashMap();
params.put("sha", object.getSha()); //$NON-NLS-1$
if (force)
params.put("force", true); //$NON-NLS-1$
return client.post(uri.toString(), params, Reference.class);
}
/**
* Get commit for given SHA-1
*
* @param repository
* @param sha
* @return commit
* @throws IOException
*/
public Commit getCommit(IRepositoryIdProvider repository, String sha)
throws IOException {
final String id = getId(repository);
if (sha == null)
throw new IllegalArgumentException("SHA-1 cannot be null"); //$NON-NLS-1$
if (sha.length() == 0)
throw new IllegalArgumentException("SHA-1 cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_COMMITS);
uri.append('/').append(sha);
GitHubRequest request = createRequest();
request.setType(Commit.class);
request.setUri(uri);
return (Commit) client.get(request).getBody();
}
/**
* Create commit in given repository
*
* @param repository
* @param commit
* @return created commit
* @throws IOException
*/
public Commit createCommit(IRepositoryIdProvider repository, Commit commit)
throws IOException {
final String id = getId(repository);
if (commit == null)
throw new IllegalArgumentException("Commit cannot be null"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_COMMITS);
Map params = new HashMap();
params.put("author", commit.getAuthor()); //$NON-NLS-1$
params.put("committer", commit.getCommitter()); //$NON-NLS-1$
params.put("message", commit.getMessage()); //$NON-NLS-1$
List parents = commit.getParents();
if (parents != null && parents.size() > 0) {
List parentIds = new ArrayList();
for (Commit parent : parents)
parentIds.add(parent.getSha());
params.put("parents", parentIds); //$NON-NLS-1$
}
Tree tree = commit.getTree();
if (tree != null)
params.put("tree", tree.getSha()); //$NON-NLS-1$
return client.post(uri.toString(), params, Commit.class);
}
/**
* Get tag for given SHA-1
*
* @param repository
* @param sha
* @return tag
* @throws IOException
*/
public Tag getTag(IRepositoryIdProvider repository, String sha)
throws IOException {
final String id = getId(repository);
if (sha == null)
throw new IllegalArgumentException("SHA-1 cannot be null"); //$NON-NLS-1$
if (sha.length() == 0)
throw new IllegalArgumentException("SHA-1 cannot be empty"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_TAGS);
uri.append('/').append(sha);
GitHubRequest request = createRequest();
request.setType(Tag.class);
request.setUri(uri);
return (Tag) client.get(request).getBody();
}
/**
* Create tag object in given repository
*
* @param repository
* @param tag
* @return created tag
* @throws IOException
*/
public Tag createTag(IRepositoryIdProvider repository, Tag tag)
throws IOException {
final String id = getId(repository);
if (tag == null)
throw new IllegalArgumentException("Tag cannot be null"); //$NON-NLS-1$
StringBuilder uri = new StringBuilder();
uri.append(SEGMENT_REPOS);
uri.append('/').append(id);
uri.append(SEGMENT_GIT);
uri.append(SEGMENT_TAGS);
Map params = new HashMap();
params.put("tag", tag.getTag()); //$NON-NLS-1$
params.put("message", tag.getMessage()); //$NON-NLS-1$
TypedResource object = tag.getObject();
if (object != null) {
params.put("object", object.getSha()); //$NON-NLS-1$
params.put("type", object.getType()); //$NON-NLS-1$
}
params.put("tagger", tag.getTagger()); //$NON-NLS-1$
return client.post(uri.toString(), params, Tag.class);
}
}
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