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/*
* Copyright (C) 2015, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.transport;
import java.net.URISyntaxException;
import java.text.MessageFormat;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Set;
import org.eclipse.jgit.errors.NotSupportedException;
import org.eclipse.jgit.errors.TransportException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.transport.BasePackFetchConnection.FetchConfig;
import org.eclipse.jgit.transport.resolver.ReceivePackFactory;
import org.eclipse.jgit.transport.resolver.UploadPackFactory;
/**
* Protocol for transport between manually-specified repositories in tests.
* <p>
* Remote repositories are registered using
* {@link #register(Object, Repository)}, after which they can be accessed using
* the returned URI. As this class provides both the client side (the protocol)
* and the server side, the caller is responsible for setting up and passing the
* connection context, whatever form that may take.
* <p>
* Unlike the other built-in protocols, which are automatically-registered
* singletons, callers are expected to register/unregister specific protocol
* instances on demand with
* {@link org.eclipse.jgit.transport.Transport#register(TransportProtocol)}.
*
* @param <C>
* the connection type
* @since 4.0
*/
public class TestProtocol<C> extends TransportProtocol {
private static final String SCHEME = "test"; //$NON-NLS-1$
private static FetchConfig fetchConfig;
private class Handle {
final C req;
final Repository remote;
Handle(C req, Repository remote) {
this.req = req;
this.remote = remote;
}
}
final UploadPackFactory<C> uploadPackFactory;
final ReceivePackFactory<C> receivePackFactory;
private final HashMap<URIish, Handle> handles;
/**
* Constructor for TestProtocol.
*
* @param uploadPackFactory
* factory for creating
* {@link org.eclipse.jgit.transport.UploadPack} used by all
* connections from this protocol instance.
* @param receivePackFactory
* factory for creating
* {@link org.eclipse.jgit.transport.ReceivePack} used by all
* connections from this protocol instance.
*/
public TestProtocol(UploadPackFactory<C> uploadPackFactory,
ReceivePackFactory<C> receivePackFactory) {
this.uploadPackFactory = uploadPackFactory;
this.receivePackFactory = receivePackFactory;
this.handles = new HashMap<>();
}
@Override
public String getName() {
return JGitText.get().transportProtoTest;
}
@Override
public Set<String> getSchemes() {
return Collections.singleton(SCHEME);
}
@Override
public Transport open(URIish uri, Repository local, String remoteName)
throws NotSupportedException, TransportException {
Handle h = handles.get(uri);
if (h == null) {
throw new NotSupportedException(MessageFormat.format(
JGitText.get().URINotSupported, uri));
}
return new TransportInternal(local, uri, h);
}
@Override
public Set<URIishField> getRequiredFields() {
return EnumSet.of(URIishField.HOST, URIishField.PATH);
}
@Override
public Set<URIishField> getOptionalFields() {
return Collections.emptySet();
}
static void setFetchConfig(FetchConfig c) {
fetchConfig = c;
}
/**
* Register a repository connection over the internal test protocol.
*
* @param req
* connection context. This instance is reused for all connections
* made using this protocol; if it is stateful and usable only for
* one connection, the same repository should be registered
* multiple times.
* @param remote
* remote repository to connect to.
* @return a URI that can be used to connect to this repository for both fetch
* and push.
*/
public synchronized URIish register(C req, Repository remote) {
URIish uri;
try {
int n = handles.size();
uri = new URIish(SCHEME + "://test/conn" + n); //$NON-NLS-1$
} catch (URISyntaxException e) {
throw new IllegalStateException(e);
}
handles.put(uri, new Handle(req, remote));
return uri;
}
private class TransportInternal extends Transport implements PackTransport {
private final Handle handle;
TransportInternal(Repository local, URIish uri, Handle handle) {
super(local, uri);
this.handle = handle;
}
@Override
public FetchConnection openFetch() throws NotSupportedException,
TransportException {
handle.remote.incrementOpen();
return new InternalFetchConnection<>(this, uploadPackFactory,
handle.req, handle.remote) {
@Override
FetchConfig getFetchConfig() {
return fetchConfig != null ? fetchConfig
: super.getFetchConfig();
}
};
}
@Override
public PushConnection openPush() throws NotSupportedException,
TransportException {
handle.remote.incrementOpen();
return new InternalPushConnection<>(
this, receivePackFactory, handle.req, handle.remote);
}
@Override
public void close() {
// Resources must be established per-connection.
}
}
}
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