1 files changed, 78 insertions, 0 deletions
diff --git a/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/ConsulConfigFileReader.java b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/ConsulConfigFileReader.java
new file mode 100644
index 00000000..f11d9ff6
--- /dev/null
+++ b/prh-app-server/src/main/java/org/onap/dcaegen2/services/prh/configuration/ConsulConfigFileReader.java
@@ -0,0 +1,78 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.dcaegen2.services.prh.configuration;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+import java.util.Optional;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.EnvProperties;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.ImmutableEnvProperties;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.Resource;
+import reactor.core.publisher.Mono;
+
+@Configuration
+public class ConsulConfigFileReader {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ConsulConfigFileReader.class);
+    private static final int DEFAULT_CONSUL_PORT = 8500;
+    private ImmutableEnvProperties jsonEnvProperties;
+
+    @Value("classpath:consul_config.json")
+    private Resource consulConfig;
+
+    public Mono<EnvProperties> evaluate() {
+        initFileStreamReader();
+        EnvProperties envProperties = ImmutableEnvProperties.builder()
+                .consulHost(jsonEnvProperties.consulHost())
+                .consulPort(Optional.ofNullable(jsonEnvProperties.consulPort()).orElse(DEFAULT_CONSUL_PORT))
+                .cbsName(jsonEnvProperties.cbsName())
+                .appName(jsonEnvProperties.appName())
+                .build();
+        LOGGER.info("Evaluated variables: {}", envProperties);
+        return Mono.just(envProperties);
+    }
+
+    private void initFileStreamReader() {
+        LOGGER.debug("Loading configuration from configuration file");
+        Gson gson = new Gson();
+        try (InputStream inputStream = consulConfig.getInputStream()) {
+            JsonElement rootElement = getJsonElement(inputStream);
+            if (rootElement.isJsonObject()) {
+                jsonEnvProperties = gson.fromJson(rootElement, ImmutableEnvProperties.class);
+            }
+        } catch (IOException e) {
+            LOGGER.warn("Failed to load/parse file", e);
+        }
+    }
+
+    private JsonElement getJsonElement(InputStream inputStream) {
+        return new JsonParser().parse(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
+    }
+}