diff options
Diffstat (limited to 'src/main/java/org/onap/dcae/controller/FetchDynamicConfig.java')
-rw-r--r-- | src/main/java/org/onap/dcae/controller/FetchDynamicConfig.java | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/controller/FetchDynamicConfig.java b/src/main/java/org/onap/dcae/controller/FetchDynamicConfig.java new file mode 100644 index 00000000..caee9c4d --- /dev/null +++ b/src/main/java/org/onap/dcae/controller/FetchDynamicConfig.java @@ -0,0 +1,114 @@ +/*- + * ============LICENSE_START======================================================= + * PROJECT + * ================================================================================ + * 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.onap.dcae.controller; + +import java.io.BufferedReader; +import java.io.FileWriter; +import java.io.IOException; +import java.io.InputStreamReader; +import java.util.Map; + +import org.json.JSONArray; +import org.json.JSONObject; +import org.json.JSONTokener; + +public class FetchDynamicConfig { + + static String configFile = "/opt/app/KV-Configuration.json"; + static String url = null; + static String ret_string = null; + + public FetchDynamicConfig() { + + } + + public static void main(String[] args) { + Map<String, String> env = System.getenv(); + for (String envName : env.keySet()) { + System.out.format("%s=%s%n", envName, env.get(envName)); + } + + if (env.containsKey("CONSUL_HOST") && env.containsKey("CONFIG_BINDING_SERVICE") + && env.containsKey("HOSTNAME")) { + System.out.println(">>>Dynamic configuration to be fetched from ConfigBindingService"); + url = env.get("CONSUL_HOST") + ":8500/v1/catalog/service/" + env.get("CONFIG_BINDING_SERVICE"); + + ret_string = executecurl(url); + // consul return as array + JSONTokener temp = new JSONTokener(ret_string); + JSONObject cbsjobj = (JSONObject) new JSONArray(temp).get(0); + + String url_part1 = null; + if (cbsjobj.has("ServiceAddress") && cbsjobj.has("ServicePort")) { + url_part1 = cbsjobj.getString("ServiceAddress") + ":" + cbsjobj.getInt("ServicePort"); + } + + System.out.println("CONFIG_BINDING_SERVICE DNS RESOLVED:" + url_part1); + url = url_part1 + "/service_component/" + env.get("HOSTNAME"); + ret_string = executecurl(url); + + JSONObject jsonObject = new JSONObject(new JSONTokener(ret_string)); + try (FileWriter file = new FileWriter(configFile)) { + file.write(jsonObject.toString()); + + System.out.println("Successfully Copied JSON Object to file /opt/app/KV-Configuration.json"); + } catch (IOException e) { + System.out.println( + "Error in writing configuration into file /opt/app/KV-Configuration.json " + jsonObject); + e.printStackTrace(); + } + } + + else { + System.out.println(">>>Static configuration to be used"); + } + + } + + public static String executecurl(String url) { + + String[] command = { "curl", "-v", url }; + ProcessBuilder process = new ProcessBuilder(command); + Process p; + String result = null; + try { + p = process.start(); + + InputStreamReader ipr = new InputStreamReader(p.getInputStream()); + BufferedReader reader = new BufferedReader(ipr); + StringBuilder builder = new StringBuilder(); + String line = null; + + while ((line = reader.readLine()) != null) { + builder.append(line); + } + result = builder.toString(); + System.out.println(result); + + } catch (IOException e) { + System.out.print("error"); + e.printStackTrace(); + } + return result; + + } + +} |