1 files changed, 129 insertions, 0 deletions
diff --git a/appc-adapters/appc-netconf-adapter/appc-netconf-adapter-bundle/src/main/java/org/openecomp/appc/adapter/netconf/internal/NetconfAdapter.java b/appc-adapters/appc-netconf-adapter/appc-netconf-adapter-bundle/src/main/java/org/openecomp/appc/adapter/netconf/internal/NetconfAdapter.java
new file mode 100644
index 000000000..7740728f4
--- /dev/null
+++ b/appc-adapters/appc-netconf-adapter/appc-netconf-adapter-bundle/src/main/java/org/openecomp/appc/adapter/netconf/internal/NetconfAdapter.java
@@ -0,0 +1,129 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * 						reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.adapter.netconf.internal;
+
+import org.openecomp.appc.configuration.ConfigurationFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.concurrent.*;
+
+/**
+ * Provides basic methods for exchanging netconf messages.
+ */
+public class NetconfAdapter {
+
+    private static final Logger LOG = LoggerFactory.getLogger(NetconfAdapter.class);
+    private static final long MAX_WAITING_TIME = 1800000;
+    private static ExecutorService executor = Executors.newFixedThreadPool(5);
+
+    // device input stream
+    private InputStream in;
+    // device output stream
+    private OutputStream out;
+    private long maxWaitingTime = ConfigurationFactory.getConfiguration().getLongProperty("org.openecomp.appc.netconf.recv.timeout", MAX_WAITING_TIME);
+
+    /**
+     * Constructor.
+     *
+     * @param in  InputStream this instance will read netconf messages from
+     * @param out OutputStream this instance will write netconf messages to
+     * @throws IOException
+     */
+    public NetconfAdapter(InputStream in, OutputStream out) throws IOException {
+        this.in = in;
+        this.out = out;
+    }
+
+    /**
+     * Receives netconf message from InputStream and return it's text (without netconf frame characters).
+     *
+     * @return text of message received from netconf device
+     * @throws IOException
+     */
+    public String receiveMessage() throws IOException {
+
+        final NetconfMessage message = new NetconfMessage();
+        final byte[] buf = new byte[1024];
+
+        //int readByte = 1;
+        // Read data with timeout
+        Callable<Boolean> readTask = new Callable<Boolean>() {
+            @Override
+            public Boolean call() throws Exception {
+                int c;
+                while ((c = in.read(buf)) > 0) {
+                    if (c > 0) {
+                        message.append(buf, 0, c);
+                        if (message.isCompleted()) {
+                            break;
+                        }
+                    }
+                }
+
+                if (c < 0) {
+                    return false;
+                }
+                return true;
+            }
+        };
+
+        Future<Boolean> future = executor.submit(readTask);
+        Boolean status;
+        try {
+            status = future.get(maxWaitingTime, TimeUnit.MILLISECONDS);
+        } catch (Exception e) {
+            throw new IOException(e);
+        }
+
+        if (status == false) {
+            throw new IOException("Failed to read netconf message");
+        }
+
+
+        String text = message.getText();
+        if (text != null) {
+            text = text.trim();
+        }
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("Received message from netconf device:\n" + text);
+        }
+        return text;
+    }
+
+    /**
+     * Sends netconf message with provided text (adds netconf frame characters and sends the message).
+     *
+     * @param text text of message to be sent to netconf device
+     * @throws IOException
+     */
+    public void sendMessage(final String text) throws IOException {
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("Sending message to netconf device:\n" + text);
+        }
+        out.write(new NetconfMessage(text).getFrame());
+        out.flush();
+    }
+}