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/*
* ============LICENSE_START=======================================================
* PNF-REGISTRATION-HANDLER
* ================================================================================
* Copyright (C) 2018-2019 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.common.annotations.VisibleForTesting;
import com.google.gson.*;
import org.onap.dcaegen2.services.sdk.rest.services.aai.client.config.AaiClientConfiguration;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapConsumerConfiguration;
import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;
import org.springframework.util.StreamUtils;
import javax.annotation.PostConstruct;
import javax.validation.constraints.NotNull;
import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ServiceLoader;
/**
* @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/9/18
*/
@Configuration
@EnableConfigurationProperties
@ConfigurationProperties("app")
public abstract class PrhAppConfig implements Config {
private static final Logger LOGGER = LoggerFactory.getLogger(PrhAppConfig.class);
private static final String CONFIG = "configs";
private static final String AAI = "aai";
private static final String DMAAP = "dmaap";
private static final String AAI_CONFIG = "aaiClientConfiguration";
private static final String DMAAP_PRODUCER = "dmaapProducerConfiguration";
private static final String DMAAP_CONSUMER = "dmaapConsumerConfiguration";
private static final String SECURITY = "security";
AaiClientConfiguration aaiClientConfiguration;
DmaapConsumerConfiguration dmaapConsumerConfiguration;
DmaapPublisherConfiguration dmaapPublisherConfiguration;
@Value("classpath:prh_endpoints.json")
private Resource prhEndpoints;
@Value("classpath:git_info.json")
private Resource gitInfo;
@PostConstruct
private void printGitInfo() throws IOException {
LOGGER.debug("Git info={}", StreamUtils.copyToString(gitInfo.getInputStream(), Charset.defaultCharset()));
}
@Override
public Resource getGitInfo() {
return gitInfo;
}
@Override
public DmaapConsumerConfiguration getDmaapConsumerConfiguration() {
return dmaapConsumerConfiguration;
}
@Override
public AaiClientConfiguration getAaiClientConfiguration() {
return aaiClientConfiguration;
}
@Override
public DmaapPublisherConfiguration getDmaapPublisherConfiguration() {
return dmaapPublisherConfiguration;
}
@Override
public void initFileStreamReader() {
GsonBuilder gsonBuilder = new GsonBuilder();
ServiceLoader.load(TypeAdapterFactory.class).forEach(gsonBuilder::registerTypeAdapterFactory);
JsonParser parser = new JsonParser();
try (InputStream inputStream = prhEndpoints.getInputStream()) {
JsonElement rootElement = getJsonElement(parser, inputStream);
if (rootElement.isJsonObject()) {
deserializeAaiConfiguration(gsonBuilder, rootElement);
deserializeDmaapConsumerConfiguration(gsonBuilder, rootElement);
deserializeDmaapPublisherConfiguration(gsonBuilder, rootElement);
}
} catch (IOException e) {
LOGGER.warn("Failed to load/parse file", e);
}
}
private void deserializeDmaapPublisherConfiguration(GsonBuilder gsonBuilder, JsonElement rootElement) {
dmaapPublisherConfiguration = deserializeType(gsonBuilder, concatenateJsonObjects(
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(DMAAP)
.getAsJsonObject(DMAAP_PRODUCER),
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(SECURITY)),
DmaapPublisherConfiguration.class);
}
private void deserializeDmaapConsumerConfiguration(GsonBuilder gsonBuilder, JsonElement rootElement) {
dmaapConsumerConfiguration = deserializeType(gsonBuilder, concatenateJsonObjects(
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(DMAAP)
.getAsJsonObject(DMAAP_CONSUMER),
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(SECURITY)),
DmaapConsumerConfiguration.class);
}
private void deserializeAaiConfiguration(GsonBuilder gsonBuilder, JsonElement rootElement) {
aaiClientConfiguration = deserializeType(gsonBuilder, concatenateJsonObjects(
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(AAI).getAsJsonObject(AAI_CONFIG),
rootElement.getAsJsonObject().getAsJsonObject(CONFIG).getAsJsonObject(SECURITY)),
AaiClientConfiguration.class);
}
JsonElement getJsonElement(JsonParser parser, InputStream inputStream) {
return parser.parse(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
}
private JsonObject concatenateJsonObjects(JsonObject target, JsonObject source) {
source.entrySet()
.forEach(entry -> target.add(entry.getKey(), entry.getValue()));
return target;
}
private <T> T deserializeType(@NotNull GsonBuilder gsonBuilder, @NotNull JsonObject jsonObject,
@NotNull Class<T> type) {
try {
return gsonBuilder.create().fromJson(jsonObject, type);
} catch (JsonSyntaxException e) {
LOGGER.warn("Failed to parse JSON={}", jsonObject, e);
return null;
}
}
@VisibleForTesting
void setPrhEndpoints(Resource prhEndpoints) {
this.prhEndpoints = prhEndpoints;
}
}
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