Java tutorial
/* * Copyright 2017 Google, 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.netflix.spinnaker.clouddriver.controllers; import com.netflix.spinnaker.clouddriver.artifacts.ArtifactCredentialsRepository; import com.netflix.spinnaker.clouddriver.artifacts.ArtifactDownloader; import com.netflix.spinnaker.clouddriver.artifacts.config.ArtifactCredentials; import com.netflix.spinnaker.kork.artifacts.model.Artifact; import lombok.extern.slf4j.Slf4j; import org.apache.commons.io.IOUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBody; import java.util.ArrayList; import java.util.List; import java.util.Optional; @Slf4j @RestController @RequestMapping("/artifacts") public class ArtifactController { private ArtifactCredentialsRepository artifactCredentialsRepository; private ArtifactDownloader artifactDownloader; @Autowired public ArtifactController(Optional<ArtifactCredentialsRepository> artifactCredentialsRepository, Optional<ArtifactDownloader> artifactDownloader) { this.artifactCredentialsRepository = artifactCredentialsRepository.orElse(null); this.artifactDownloader = artifactDownloader.orElse(null); } @RequestMapping(method = RequestMethod.GET, value = "/credentials") List<ArtifactCredentials> list() { if (artifactCredentialsRepository == null) { return new ArrayList<>(); } else { return artifactCredentialsRepository.getAllCredentials(); } } // PUT because we need to send a body, which GET does not allow for spring/retrofit @RequestMapping(method = RequestMethod.PUT, value = "/fetch") StreamingResponseBody fetch(@RequestBody Artifact artifact) { if (artifactDownloader == null) { throw new IllegalStateException( "Artifacts have not been enabled. Enable them using 'artifacts.enabled' in clouddriver"); } return outputStream -> IOUtils.copy(artifactDownloader.download(artifact), outputStream); } }