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-rw-r--r--dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/config/SystemConfig.java84
-rw-r--r--dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/exception/EnvironmentLoaderException.java33
-rw-r--r--dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/spring/ConfigBindingServiceEnvironmentPostProcessor.java243
3 files changed, 307 insertions, 53 deletions
diff --git a/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/config/SystemConfig.java b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/config/SystemConfig.java
new file mode 100644
index 0000000..946c2f2
--- /dev/null
+++ b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/config/SystemConfig.java
@@ -0,0 +1,84 @@
+/*-
+ * ============LICENSE_START======================================================================
+ * Copyright (C) 2019-2020 China Mobile. 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.analytics.web.config;
+
+import java.util.Optional;
+
+import org.onap.dcae.analytics.model.configbindingservice.ConfigBindingServiceConstants;
+import org.onap.dcae.analytics.web.exception.EnvironmentLoaderException;
+
+/**
+ *
+ * get consul config and cbs config.
+ *
+ * @author Kai Lu
+ */
+public class SystemConfig {
+
+ /**
+ *
+ * private constructor.
+ *
+ */
+ private SystemConfig() {
+ }
+
+ /**
+ * getConsulHost.
+ *
+ * @return consulHost consulHost
+ *
+ */
+ public static String getConsulHost() throws EnvironmentLoaderException {
+ return Optional.ofNullable(ConfigBindingServiceConstants.CONSUL_HOST_ENV_VARIABLE_VALUE)
+ .orElseThrow(() -> new EnvironmentLoaderException("$CONSUL_HOST environment has not been defined"));
+ }
+
+ /**
+ * getConsultPort.
+ *
+ * @return consulPort consulPort
+ *
+ */
+ public static Integer getConsultPort() {
+ return ConfigBindingServiceConstants.DEFAULT_CONSUL_PORT_ENV_VARIABLE_VALUE;
+ }
+
+ /**
+ * getConfigBindingService.
+ *
+ * @return configBindingService configBindingService
+ *
+ */
+ public static String getConfigBindingService() throws EnvironmentLoaderException {
+ return Optional.ofNullable(ConfigBindingServiceConstants.CONFIG_BINDING_SERVICE_ENV_VARIABLE_VALUE) //
+ .orElseThrow(() -> new EnvironmentLoaderException(
+ "$CONFIG_BINDING_SERVICE environment has not been defined"));
+ }
+
+ /**
+ * getService.
+ *
+ * @return service service
+ *
+ */
+ public static String getService() throws EnvironmentLoaderException {
+ return Optional.ofNullable(ConfigBindingServiceConstants.SERVICE_NAME_ENV_VARIABLE_VALUE).orElseThrow(
+ () -> new EnvironmentLoaderException("$HOSTNAME have not been defined as system environment"));
+ }
+
+}
diff --git a/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/exception/EnvironmentLoaderException.java b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/exception/EnvironmentLoaderException.java
new file mode 100644
index 0000000..0a5c14d
--- /dev/null
+++ b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/exception/EnvironmentLoaderException.java
@@ -0,0 +1,33 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019-2020 China Mobile. 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.analytics.web.exception;
+
+/**
+ * Exception thrown when there is a problem with the Consul environment.
+ *
+ * @author Kai Lu
+ */
+public class EnvironmentLoaderException extends Exception {
+
+ private static final long serialVersionUID = 1L;
+
+ public EnvironmentLoaderException(String message) {
+ super(message);
+ }
+}
diff --git a/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/spring/ConfigBindingServiceEnvironmentPostProcessor.java b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/spring/ConfigBindingServiceEnvironmentPostProcessor.java
index 2073127..59fca64 100644
--- a/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/spring/ConfigBindingServiceEnvironmentPostProcessor.java
+++ b/dcae-analytics/dcae-analytics-web/src/main/java/org/onap/dcae/analytics/web/spring/ConfigBindingServiceEnvironmentPostProcessor.java
@@ -19,6 +19,7 @@
package org.onap.dcae.analytics.web.spring;
+import java.time.Duration;
import java.util.Arrays;
import java.util.Collections;
import java.util.Map;
@@ -29,8 +30,16 @@ import java.util.stream.Collectors;
import org.onap.dcae.analytics.model.AnalyticsProfile;
import org.onap.dcae.analytics.model.configbindingservice.ConfigBindingServiceConstants;
import org.onap.dcae.analytics.model.util.function.JsonStringToMapFunction;
-import org.onap.dcae.analytics.model.util.supplier.ConfigBindingServiceJsonSupplier;
+import org.onap.dcae.analytics.web.config.SystemConfig;
import org.onap.dcae.analytics.web.exception.AnalyticsValidationException;
+import org.onap.dcae.analytics.web.exception.EnvironmentLoaderException;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClient;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsClientFactory;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.api.CbsRequests;
+import org.onap.dcaegen2.services.sdk.rest.services.cbs.client.model.CbsRequest;
+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.onap.dcaegen2.services.sdk.rest.services.model.logging.RequestDiagnosticContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
@@ -44,6 +53,13 @@ import org.springframework.core.env.StandardEnvironment;
import org.springframework.util.ClassUtils;
import org.springframework.web.context.support.StandardServletEnvironment;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+
+import reactor.core.Disposable;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
/**
* A custom spring framework environment post processor which can fetch and populate spring context with
* Config Binding Service application properties.
@@ -60,63 +76,33 @@ public class ConfigBindingServiceEnvironmentPostProcessor implements Environment
private static final int DEFAULT_ORDER = Ordered.HIGHEST_PRECEDENCE;
+ private Disposable refreshConfigTask = null;
+
+ private ConfigurableEnvironment env = null;
+
+ private Map<String, Object> filterKeyMap = null;
+
+ private String configServicePropertiesKey =
+ ConfigBindingServiceConstants.CONFIG_BINDING_SERVICE_PROPERTIES_KEY;
+
@Override
- public void postProcessEnvironment(final ConfigurableEnvironment environment, final SpringApplication application) {
+ public void postProcessEnvironment(final ConfigurableEnvironment environment,
+ final SpringApplication application) {
final boolean isConfigServiceProfilePresent = Arrays.stream(environment.getActiveProfiles())
.anyMatch(p -> p.equalsIgnoreCase(AnalyticsProfile.CONFIG_BINDING_SERVICE_PROFILE_NAME));
if (!isConfigServiceProfilePresent) {
- logger.info("Config Binding Service Profile is not active. " +
- "Skipping Adding config binding service properties");
+ logger.info("Config Binding Service Profile is not active. "
+ + "Skipping Adding config binding service properties");
return;
}
- logger.info("Config Binding Service Profile is active. " +
- "Application properties will be fetched from config binding service");
-
- // Fetch config binding service json
- final Optional<String> configServiceJsonOptional = new ConfigBindingServiceJsonSupplier().get();
+ logger.info("Config Binding Service Profile is active. "
+ + "Application properties will be fetched from config binding service");
- if (!configServiceJsonOptional.isPresent()) {
- final String errorMessage = "Unable to get fetch application configuration from config binding service";
- throw new AnalyticsValidationException(errorMessage, new IllegalStateException(errorMessage));
- }
-
- final String configServicePropertiesKey = ConfigBindingServiceConstants.CONFIG_BINDING_SERVICE_PROPERTIES_KEY;
-
- // convert fetch config binding service json string to Map of property key and values
- final Map<String, Object> configPropertiesMap = configServiceJsonOptional
- .map(new JsonStringToMapFunction(configServicePropertiesKey))
- .orElse(Collections.emptyMap());
-
- if (configPropertiesMap.isEmpty()) {
-
- logger.warn("No properties found in config binding service");
-
- } else {
-
- // remove config service key prefix on spring reserved property key prefixes
- final Set<String> springKeyPrefixes = ConfigBindingServiceConstants.SPRING_RESERVED_PROPERTIES_KEY_PREFIXES;
- final Set<String> springKeys = springKeyPrefixes.stream()
- .map(springKeyPrefix -> configServicePropertiesKey + "." + springKeyPrefix)
- .collect(Collectors.toSet());
-
- final Map<String, Object> filterKeyMap = configPropertiesMap.entrySet()
- .stream()
- .collect(Collectors.toMap(
- (Map.Entry<String, Object> e) ->
- springKeys.stream().anyMatch(springKey -> e.getKey().startsWith(springKey)) ?
- e.getKey().substring(configServicePropertiesKey.toCharArray().length + 1) :
- e.getKey(),
- Map.Entry::getValue)
- );
-
- filterKeyMap.forEach((key, value) ->
- logger.info("Adding property from config service in spring context: {} -> {}", key, value));
-
- addJsonPropertySource(environment, new MapPropertySource(configServicePropertiesKey, filterKeyMap));
- }
+ env = environment;
+ initialize();
}
@@ -125,9 +111,8 @@ public class ConfigBindingServiceEnvironmentPostProcessor implements Environment
return DEFAULT_ORDER;
}
-
- private void addJsonPropertySource(final ConfigurableEnvironment environment, final PropertySource<?> source) {
- final MutablePropertySources sources = environment.getPropertySources();
+ public synchronized void addJsonPropertySource(final MutablePropertySources sources,
+ final PropertySource<?> source) {
final String name = findPropertySource(sources);
if (sources.contains(name)) {
sources.addBefore(name, source);
@@ -137,12 +122,164 @@ public class ConfigBindingServiceEnvironmentPostProcessor implements Environment
}
private String findPropertySource(final MutablePropertySources sources) {
- if (ClassUtils.isPresent(SERVLET_ENVIRONMENT_CLASS, null) &&
- sources.contains(StandardServletEnvironment.JNDI_PROPERTY_SOURCE_NAME)) {
+ if (ClassUtils.isPresent(SERVLET_ENVIRONMENT_CLASS, null)
+ && sources.contains(StandardServletEnvironment.JNDI_PROPERTY_SOURCE_NAME)) {
return StandardServletEnvironment.JNDI_PROPERTY_SOURCE_NAME;
}
return StandardEnvironment.SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME;
}
+ /**
+ *
+ * Fetch the configuration.
+ *
+ */
+ public void initialize() {
+ stop();
+
+ refreshConfigTask = createRefreshTask() //
+ .subscribe(e -> logger.info("Refreshed configuration data"),
+ throwable -> logger.error("Configuration refresh terminated due to exception", throwable),
+ () -> logger.error("Configuration refresh terminated"));
+ }
+
+ /**
+ * Fetch the configuration task from CBS.
+ *
+ */
+ private Flux<String> createRefreshTask() {
+ return readEnvironmentVariables() //
+ .flatMap(this::createCbsClient) //
+ .flatMapMany(this::periodicConfigurationUpdates) //
+ .map(this::parseTcaConfig) //
+ .onErrorResume(this::onErrorResume);
+ }
+
+ /**
+ * periodicConfigurationUpdates.
+ *
+ * @param cbsClient cbsClient
+ * @return configuration refreshed
+ *
+ */
+ public Flux<JsonObject> periodicConfigurationUpdates(CbsClient cbsClient) {
+ final Duration initialDelay = Duration.ZERO;
+ final Duration refreshPeriod =
+ Duration.ofMinutes(ConfigBindingServiceConstants.CONFIG_SERVICE_REFRESHPERIOD);
+ final CbsRequest getConfigRequest = CbsRequests.getAll(RequestDiagnosticContext.create());
+ return cbsClient.updates(getConfigRequest, initialDelay, refreshPeriod);
+ }
+
+ /**
+ *
+ * get environment variables.
+ *
+ * @return environment properties.
+ *
+ */
+ public Mono<EnvProperties> readEnvironmentVariables() {
+ logger.trace("Loading configuration from system environment variables");
+ EnvProperties envProperties;
+ try {
+ envProperties = ImmutableEnvProperties.builder() //
+ .consulHost(SystemConfig.getConsulHost()) //
+ .consulPort(SystemConfig.getConsultPort()) //
+ .cbsName(SystemConfig.getConfigBindingService()) //
+ .appName(SystemConfig.getService()) //
+ .build();
+ } catch (EnvironmentLoaderException e) {
+ return Mono.error(e);
+ }
+ logger.trace("Evaluated environment system variables {}", envProperties);
+ return Mono.just(envProperties);
+ }
+
+ /**
+ * Stops the refreshing of the configuration.
+ *
+ */
+ public void stop() {
+ if (refreshConfigTask != null) {
+ refreshConfigTask.dispose();
+ refreshConfigTask = null;
+ }
+ }
+
+ /**
+ * periodicConfigurationUpdates.
+ *
+ * @param throwable throwable
+ * @return Mono
+ *
+ */
+ private <R> Mono<R> onErrorResume(Throwable throwable) {
+ logger.error("Could not refresh application configuration {}", throwable.toString());
+ return Mono.empty();
+ }
+
+ /**
+ * create CbsClient.
+ *
+ * @param env environment properties
+ * @return cbsclient
+ *
+ */
+ public Mono<CbsClient> createCbsClient(EnvProperties env) {
+ return CbsClientFactory.createCbsClient(env);
+ }
+
+ /**
+ * Parse configuration.
+ *
+ * @param jsonObject the TCA service's configuration
+ * @return this
+ *
+ */
+ public String parseTcaConfig(JsonObject jsonObject) {
+
+ JsonElement jsonConfig = jsonObject.get(ConfigBindingServiceConstants.CONFIG);
+
+ Optional<String> configServiceJsonOptional = Optional.of(jsonConfig.toString());
+ if (!configServiceJsonOptional.isPresent()) {
+ final String errorMessage =
+ "Unable to get fetch application configuration from config binding service";
+ throw new AnalyticsValidationException(errorMessage,
+ new IllegalStateException(errorMessage));
+ }
+
+ // convert fetch config binding service json string to Map of property key and
+ // values
+ Map<String, Object> configPropertiesMap = configServiceJsonOptional
+ .map(new JsonStringToMapFunction(configServicePropertiesKey)).orElse(Collections.emptyMap());
+
+ if (configPropertiesMap.isEmpty()) {
+
+ logger.warn("No properties found in config binding service");
+
+ } else {
+
+ // remove config service key prefix on spring reserved property key prefixes
+ final Set<String> springKeyPrefixes =
+ ConfigBindingServiceConstants.SPRING_RESERVED_PROPERTIES_KEY_PREFIXES;
+ final Set<String> springKeys = springKeyPrefixes.stream()
+ .map(springKeyPrefix -> configServicePropertiesKey + "." + springKeyPrefix)
+ .collect(Collectors.toSet());
+
+ filterKeyMap = configPropertiesMap.entrySet().stream()
+ .collect(Collectors.toMap((Map.Entry<String, Object> e) -> springKeys.stream()
+ .anyMatch(springKey -> e.getKey().startsWith(springKey))
+ ? e.getKey().substring(configServicePropertiesKey.toCharArray().length + 1)
+ : e.getKey(),
+ Map.Entry::getValue));
+
+ filterKeyMap.forEach((key, value) -> logger
+ .info("Adding property from config service in spring context: {} -> {}", key, value));
+ MutablePropertySources sources = env.getPropertySources();
+ addJsonPropertySource(sources, new MapPropertySource(configServicePropertiesKey, filterKeyMap));
+
+ }
+ return configServiceJsonOptional.get();
+ }
+
}