jgit/org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV0Request.java

/*
 * Copyright (C) 2018, Google LLC.
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
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 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
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 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.transport;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import org.eclipse.jgit.lib.ObjectId;

/**
 * Fetch request in the V0/V1 protocol.
 */
final class FetchV0Request {

	final Set<ObjectId> wantIds;

	final int depth;

	final Set<ObjectId> clientShallowCommits;

	final long filterBlobLimit;

	final Set<String> clientCapabilities;

	FetchV0Request(Set<ObjectId> wantIds, int depth,
			Set<ObjectId> clientShallowCommits, long filterBlobLimit,
			Set<String> clientCapabilities) {
		this.wantIds = wantIds;
		this.depth = depth;
		this.clientShallowCommits = clientShallowCommits;
		this.filterBlobLimit = filterBlobLimit;
		this.clientCapabilities = clientCapabilities;
	}

	Set<ObjectId> getWantIds() {
		return wantIds;
	}

	int getDepth() {
		return depth;
	}

	Set<ObjectId> getClientShallowCommits() {
		return clientShallowCommits;
	}

	long getFilterBlobLimit() {
		return filterBlobLimit;
	}

	Set<String> getClientCapabilities() {
		return clientCapabilities;
	}

	static final class Builder {

		int depth;

		Set<ObjectId> wantIds = new HashSet<>();

		Set<ObjectId> clientShallowCommits = new HashSet<>();

		long filterBlobLimit = -1;

		Set<String> clientCaps = new HashSet<>();

		/**
		 * @param objectId
		 *            object id received in a "want" line
		 * @return this builder
		 */
		Builder addWantId(ObjectId objectId) {
			wantIds.add(objectId);
			return this;
		}

		/**
		 * @param d
		 *            depth set in a "deepen" line
		 * @return this builder
		 */
		Builder setDepth(int d) {
			depth = d;
			return this;
		}

		/**
		 * @param shallowOid
		 *            object id received in a "shallow" line
		 * @return this builder
		 */
		Builder addClientShallowCommit(ObjectId shallowOid) {
			clientShallowCommits.add(shallowOid);
			return this;
		}

		/**
		 * @param clientCapabilities
		 *            client capabilities sent by the client in the first want
		 *            line of the request
		 * @return this builder
		 */
		Builder addClientCapabilities(Collection<String> clientCapabilities) {
			clientCaps.addAll(clientCapabilities);
			return this;
		}

		/**
		 * @param filterBlobLim
		 *            blob limit set in a "filter" line
		 * @return this builder
		 */
		Builder setFilterBlobLimit(long filterBlobLim) {
			filterBlobLimit = filterBlobLim;
			return this;
		}

		FetchV0Request build() {
			return new FetchV0Request(wantIds, depth, clientShallowCommits,
					filterBlobLimit, clientCaps);
		}
	}
}