[ONOS-4127] Backup metric service to ganglia monitoring server
- Initial implementation of metric service reporter
- Unit test for metric service reporter
- Bump up metric lib from 3.1.0 to 3.1.2
Change-Id: Ia178df759d671dfc15cffaacb09d5279ad3d9ad8
diff --git a/apps/metricsreporter/src/main/java/org/onosproject/metrics/reporter/GangliaMetricsReporter.java b/apps/metricsreporter/src/main/java/org/onosproject/metrics/reporter/GangliaMetricsReporter.java
new file mode 100644
index 0000000..f2f48f4
--- /dev/null
+++ b/apps/metricsreporter/src/main/java/org/onosproject/metrics/reporter/GangliaMetricsReporter.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.metrics.reporter;
+
+import com.codahale.metrics.MetricRegistry;
+import com.codahale.metrics.ganglia.GangliaReporter;
+import info.ganglia.gmetric4j.gmetric.GMetric;
+import org.apache.commons.lang.StringUtils;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Modified;
+import org.apache.felix.scr.annotations.Property;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onlab.metrics.MetricsService;
+import org.onlab.util.Tools;
+import org.onosproject.cfg.ComponentConfigService;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.osgi.service.component.ComponentContext;
+import org.slf4j.Logger;
+
+import java.io.IOException;
+import java.util.Dictionary;
+import java.util.concurrent.TimeUnit;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * A metric report that reports all metrics value to ganglia monitoring server.
+ */
+@Component(immediate = true)
+public class GangliaMetricsReporter implements MetricsReporter {
+ private final Logger log = getLogger(getClass());
+
+ // we will use uni-cast mode to transfer the metrics value by default
+ private static final GMetric.UDPAddressingMode GANGLIA_MODE =
+ GMetric.UDPAddressingMode.UNICAST;
+ private static final int REPORT_PERIOD = 1;
+ private static final TimeUnit REPORT_TIME_UNIT = TimeUnit.MINUTES;
+
+ private static final String DEFAULT_ADDRESS = "localhost";
+ private static final int DEFAULT_PORT = 8649;
+ private static final int DEFAULT_TTL = 1;
+ private static final String DEFAULT_METRIC_NAMES = "default";
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected MetricsService metricsService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected ComponentConfigService cfgService;
+
+ @Property(name = "monitorAll", boolValue = true,
+ label = "Enable to monitor all of metrics stored in metric registry default is true")
+ protected boolean monitorAll = true;
+
+ @Property(name = "metricNames", value = DEFAULT_METRIC_NAMES,
+ label = "Names of metric to be monitored; default metric names are 'default'")
+ protected String metricNames = DEFAULT_METRIC_NAMES;
+
+ @Property(name = "address", value = DEFAULT_ADDRESS,
+ label = "IP address of ganglia monitoring server; default is localhost")
+ protected String address = DEFAULT_ADDRESS;
+
+ @Property(name = "port", intValue = DEFAULT_PORT,
+ label = "Port number of ganglia monitoring server; default is 8649")
+ protected int port = DEFAULT_PORT;
+
+ @Property(name = "ttl", intValue = DEFAULT_TTL,
+ label = "TTL value of ganglia monitoring server; default is 1")
+ protected int ttl = DEFAULT_TTL;
+
+ private ApplicationId appId;
+ private GMetric ganglia;
+ private GangliaReporter gangliaReporter;
+
+ @Activate
+ public void activate() {
+ cfgService.registerProperties(getClass());
+ appId = coreService.registerApplication("org.onosproject.metrics.reporter");
+
+ startReport();
+ log.info("Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ cfgService.unregisterProperties(getClass(), false);
+
+ stopReport();
+ log.info("Stopped");
+ }
+
+ @Modified
+ public void modified(ComponentContext context) {
+ readComponentConfiguration(context);
+ stopReport();
+ startReport();
+ }
+
+ @Override
+ public void startReport() {
+ try {
+ ganglia = new GMetric(address, port, GANGLIA_MODE, ttl);
+
+ MetricRegistry mr = metricsService.getMetricRegistry();
+
+ gangliaReporter = GangliaReporter.forRegistry(filter(mr))
+ .convertRatesTo(TimeUnit.SECONDS)
+ .convertDurationsTo(TimeUnit.MILLISECONDS)
+ .build(ganglia);
+ gangliaReporter.start(REPORT_PERIOD, REPORT_TIME_UNIT);
+ } catch (IOException e) {
+ log.error("Fail to connect to given ganglia server!");
+ }
+ }
+
+ @Override
+ public void stopReport() {
+ gangliaReporter.stop();
+ ganglia = null;
+ gangliaReporter = null;
+ }
+
+ /**
+ * Filters the metrics to only include a set of the given metrics.
+ *
+ * @param metricRegistry original metric registry
+ * @return filtered metric registry
+ */
+ protected MetricRegistry filter(MetricRegistry metricRegistry) {
+ if (!monitorAll) {
+ final MetricRegistry filtered = new MetricRegistry();
+ metricRegistry.getNames().stream().filter(name ->
+ containsName(name, metricNames)).forEach(name ->
+ filtered.register(name, metricRegistry.getMetrics().get(name)));
+ return filtered;
+ } else {
+ return metricRegistry;
+ }
+ }
+
+ /**
+ * Looks up whether the metric name contains the given prefix keywords.
+ * Note that the keywords are separated with comma as delimiter
+ *
+ * @param full the original metric name that to be compared with
+ * @param prefixes the prefix keywords that are matched against with the metric name
+ * @return boolean value that denotes whether the metric name starts with the given prefix
+ */
+ protected boolean containsName(String full, String prefixes) {
+ String[] prefixArray = StringUtils.split(prefixes, ",");
+ for (String prefix : prefixArray) {
+ if (StringUtils.startsWith(full, StringUtils.trimToEmpty(prefix))) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Extracts properties from the component configuration context.
+ *
+ * @param context the component context
+ */
+ private void readComponentConfiguration(ComponentContext context) {
+ Dictionary<?, ?> properties = context.getProperties();
+
+ String addressStr = Tools.get(properties, "address");
+ address = addressStr != null ? addressStr : DEFAULT_ADDRESS;
+ log.info("Configured. Ganglia server address is {}", address);
+
+ String metricNameStr = Tools.get(properties, "metricNames");
+ metricNames = metricNameStr != null ? metricNameStr : DEFAULT_METRIC_NAMES;
+ log.info("Configured. Metric name is {}", metricNames);
+
+ Integer portConfigured = Tools.getIntegerProperty(properties, "port");
+ if (portConfigured == null) {
+ port = DEFAULT_PORT;
+ log.info("Ganglia port is not configured, default value is {}", port);
+ } else {
+ port = portConfigured;
+ log.info("Configured. Ganglia port is configured to {}", port);
+ }
+
+ Integer ttlConfigured = Tools.getIntegerProperty(properties, "ttl");
+ if (ttlConfigured == null) {
+ ttl = DEFAULT_TTL;
+ log.info("Ganglia TTL is not configured, default value is {}", ttl);
+ } else {
+ ttl = ttlConfigured;
+ log.info("Configured. Ganglia TTL is configured to {}", ttl);
+ }
+
+ Boolean monitorAllEnabled = Tools.isPropertyEnabled(properties, "monitorAll");
+ if (monitorAllEnabled == null) {
+ log.info("Monitor all metrics is not configured, " +
+ "using current value of {}", monitorAll);
+ } else {
+ monitorAll = monitorAllEnabled;
+ log.info("Configured. Monitor all metrics is {}",
+ monitorAll ? "enabled" : "disabled");
+ }
+ }
+}