1 files changed, 83 insertions, 0 deletions
diff --git a/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/Cmpv2HttpClient.java b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/Cmpv2HttpClient.java
new file mode 100644
index 00000000..0f32c668
--- /dev/null
+++ b/certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/Cmpv2HttpClient.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.oom.certservice.cmpv2client.impl;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.ByteArrayEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.bouncycastle.asn1.cmp.PKIMessage;
+import org.onap.oom.certservice.cmpv2client.exceptions.CmpClientException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+class Cmpv2HttpClient {
+
+    private static final Logger LOG = LoggerFactory.getLogger(Cmpv2HttpClient.class);
+
+    private static final String CONTENT_TYPE = "Content-type";
+    private static final String CMP_REQUEST_MIMETYPE = "application/pkixcmp";
+    private final CloseableHttpClient httpClient;
+
+    /**
+     * constructor for Cmpv2HttpClient
+     *
+     * @param httpClient CloseableHttpClient used for sending/recieve request.
+     */
+    Cmpv2HttpClient(CloseableHttpClient httpClient) {
+        this.httpClient = httpClient;
+    }
+
+    /**
+     * Send Post Request to Server
+     *
+     * @param pkiMessage PKIMessage to send to server
+     * @param urlString  url for the server we're sending request
+     * @param caName     name of CA server
+     * @return PKIMessage received from CMPServer
+     * @throws CmpClientException thrown if problems with connecting or parsing response to server
+     */
+    public byte[] postRequest(
+            final PKIMessage pkiMessage, final String urlString, final String caName)
+            throws CmpClientException {
+        try (ByteArrayOutputStream byteArrOutputStream = new ByteArrayOutputStream()) {
+            final HttpPost postRequest = new HttpPost(urlString);
+            final byte[] requestBytes = pkiMessage.getEncoded();
+
+            postRequest.setEntity(new ByteArrayEntity(requestBytes));
+            postRequest.setHeader(CONTENT_TYPE, CMP_REQUEST_MIMETYPE);
+
+            try (CloseableHttpResponse response = httpClient.execute(postRequest)) {
+                response.getEntity().writeTo(byteArrOutputStream);
+            }
+            return byteArrOutputStream.toByteArray();
+        } catch (IOException ioe) {
+            CmpClientException cmpClientException =
+                    new CmpClientException(
+                            String.format("IOException error while trying to connect CA %s", caName), ioe);
+            LOG.error("IOException error {}, while trying to connect CA {}", ioe.getMessage(), caName);
+            throw cmpClientException;
+        }
+    }
+}