Add kubevirt API config service, expose it via REST API and CLI

Change-Id: I45a867ad54622656475758e7b4af38c19e551790
diff --git a/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtApiConfigJsonMatcher.java b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtApiConfigJsonMatcher.java
new file mode 100644
index 0000000..17df9bc
--- /dev/null
+++ b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtApiConfigJsonMatcher.java
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2020-present Open Networking 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.
+ */
+package org.onosproject.kubevirtnode.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.kubevirtnode.api.KubevirtApiConfig;
+
+/**
+ * Hamcrest matcher for KubeVirt API config.
+ */
+public final class KubevirtApiConfigJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final KubevirtApiConfig kubevirtApiConfig;
+
+    private static final String SCHEME = "scheme";
+    private static final String IP_ADDRESS = "ipAddress";
+    private static final String PORT = "port";
+    private static final String STATE = "state";
+    private static final String TOKEN = "token";
+    private static final String CA_CERT_DATA = "caCertData";
+    private static final String CLIENT_CERT_DATA = "clientCertData";
+    private static final String CLIENT_KEY_DATA = "clientKeyData";
+
+    private KubevirtApiConfigJsonMatcher(KubevirtApiConfig kubevirtApiConfig) {
+        this.kubevirtApiConfig = kubevirtApiConfig;
+    }
+
+    @Override
+    protected boolean matchesSafely(JsonNode jsonNode, Description description) {
+        // check scheme
+        String jsonScheme = jsonNode.get(SCHEME).asText();
+        String scheme = kubevirtApiConfig.scheme().name();
+        if (!jsonScheme.equals(scheme)) {
+            description.appendText("scheme was " + jsonScheme);
+            return false;
+        }
+
+        // check IP address
+        String jsonIpAddress = jsonNode.get(IP_ADDRESS).asText();
+        String ipAddress = kubevirtApiConfig.ipAddress().toString();
+        if (!jsonIpAddress.equals(ipAddress)) {
+            description.appendText("ipAddress was " + jsonIpAddress);
+            return false;
+        }
+
+        // check port
+        int jsonPort = jsonNode.get(PORT).asInt();
+        int port = kubevirtApiConfig.port();
+        if (jsonPort != port) {
+            description.appendText("port was " + jsonPort);
+            return false;
+        }
+
+        // check state
+        JsonNode jsonState = jsonNode.get(STATE);
+        String state = kubevirtApiConfig.state().name();
+        if (jsonState != null) {
+            if (!jsonState.asText().equals(state)) {
+                description.appendText("state was " + jsonState);
+                return false;
+            }
+        }
+
+        // check token
+        JsonNode jsonToken = jsonNode.get(TOKEN);
+        String token = kubevirtApiConfig.token();
+        if (jsonToken != null) {
+            if (!jsonToken.asText().equals(token)) {
+                description.appendText("token was " + jsonToken);
+                return false;
+            }
+        }
+
+        // check caCertData
+        JsonNode jsonCaCertData = jsonNode.get(CA_CERT_DATA);
+        String caCertData = kubevirtApiConfig.caCertData();
+        if (jsonCaCertData != null) {
+            if (!jsonCaCertData.asText().equals(caCertData)) {
+                description.appendText("caCertData was " + jsonCaCertData);
+                return false;
+            }
+        }
+
+        // check clientCertData
+        JsonNode jsonClientCertData = jsonNode.get(CLIENT_CERT_DATA);
+        String clientCertData = kubevirtApiConfig.clientCertData();
+
+        if (jsonClientCertData != null) {
+            if (!jsonClientCertData.asText().equals(clientCertData)) {
+                description.appendText("clientCertData was " + jsonClientCertData);
+                return false;
+            }
+        }
+
+        // check clientKeyData
+        JsonNode jsonClientKeyData = jsonNode.get(CLIENT_KEY_DATA);
+        String clientKeyData = kubevirtApiConfig.clientKeyData();
+
+        if (jsonClientKeyData != null) {
+            if (!jsonClientKeyData.asText().equals(clientKeyData)) {
+                description.appendText("clientKeyData was " + jsonClientKeyData);
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(kubevirtApiConfig.toString());
+    }
+
+    /**
+     * Factory to allocate an kubevirtApiConfig matcher.
+     *
+     * @param config kubevirtApiConfig object we are looking for
+     * @return matcher
+     */
+    public static KubevirtApiConfigJsonMatcher matchesKubevirtApiConfig(KubevirtApiConfig config) {
+        return new KubevirtApiConfigJsonMatcher(config);
+    }
+}