com.facebook.buck.file.RemoteFileDescription.java Source code

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Here is the source code for com.facebook.buck.file.RemoteFileDescription.java

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/*
 * Copyright 2014-present Facebook, Inc.
 *
 * 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.facebook.buck.file;

import com.facebook.buck.rules.AbstractDescriptionArg;
import com.facebook.buck.rules.BuildRule;
import com.facebook.buck.rules.BuildRuleParams;
import com.facebook.buck.rules.BuildRuleResolver;
import com.facebook.buck.rules.Description;
import com.facebook.buck.rules.TargetGraph;
import com.facebook.buck.util.HumanReadableException;
import com.facebook.infer.annotation.SuppressFieldNotInitialized;
import com.google.common.hash.HashCode;

import java.net.URI;
import java.util.Optional;

public class RemoteFileDescription implements Description<RemoteFileDescription.Arg> {

    private final Downloader downloader;

    public RemoteFileDescription(Downloader downloader) {
        this.downloader = downloader;
    }

    @Override
    public Arg createUnpopulatedConstructorArg() {
        return new Arg();
    }

    @Override
    public <A extends Arg> BuildRule createBuildRule(TargetGraph targetGraph, BuildRuleParams params,
            BuildRuleResolver resolver, A args) {
        HashCode sha1;
        try {
            sha1 = HashCode.fromString(args.sha1);
        } catch (IllegalArgumentException e) {
            throw new HumanReadableException(e, "%s when parsing sha1 of %s", e.getMessage(),
                    params.getBuildTarget().getUnflavoredBuildTarget().getFullyQualifiedName());
        }

        String out = args.out.orElse(params.getBuildTarget().getShortNameAndFlavorPostfix());

        return new RemoteFile(params, downloader, args.url, sha1, out, args.type.orElse(RemoteFile.Type.DATA));
    }

    @SuppressFieldNotInitialized
    public static class Arg extends AbstractDescriptionArg {
        public URI url;
        public String sha1;
        public Optional<String> out;
        public Optional<RemoteFile.Type> type;
    }
}