Java tutorial
/* * Copyright 2015 QSense, 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 io.sidecar.client; import static com.google.common.base.Throwables.propagate; import static io.sidecar.util.DateUtils.nowUtc; import java.net.URL; import com.squareup.okhttp.Request; import com.squareup.okhttp.RequestBody; import io.sidecar.jackson.ModelMapper; import io.sidecar.security.signature.SignatureVersion; import org.slf4j.Logger; import org.slf4j.LoggerFactory; class SidecarPostRequest extends SidecarRequest { private static final ModelMapper mapper = new ModelMapper(); private static Logger LOGGER = LoggerFactory.getLogger(SidecarPostRequest.class); private URL url; private Object payload; @Override public SidecarResponse send() { try { String payloadAsJson = mapper.writeValueAsString(payload); LOGGER.debug("Creating sidecar POST request... " + url); LOGGER.debug("JSON_MEDIA_TYPE payload is {}", payloadAsJson); Request.Builder request = new Request.Builder().url(url) .post(RequestBody.create(JSON_MEDIA_TYPE, payloadAsJson)); // add the required headers for signing the request signHeaders("POST", url.getPath(), request, payloadAsJson); return send(request.build()); } catch (Exception e) { throw propagate(e); } } public static class Builder { private SidecarPostRequest sidecarRequest; public Builder(String accessKeyId, String password, String secret) { sidecarRequest = new SidecarPostRequest(); sidecarRequest.secret = secret; sidecarRequest.accessKey = accessKeyId; sidecarRequest.password = password; } public Builder withSignatureVersion(SignatureVersion.Version version) { sidecarRequest.signatureVersion = version.digit; return this; } public Builder withUrl(URL url) { sidecarRequest.url = url; return this; } public Builder withPayload(Object payload) { sidecarRequest.payload = payload; return this; } public SidecarPostRequest build() { // set defaults if they are not there if (sidecarRequest.requestDate == null) { sidecarRequest.requestDate = nowUtc().toString(); } return sidecarRequest; } } }