wu-sheng commented on a change in pull request #7554: URL: https://github.com/apache/skywalking/pull/7554#discussion_r697882391
########## File path: oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/trace/TraceSamplingPolicyWatcher.java ########## @@ -0,0 +1,217 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.skywalking.oap.server.analyzer.provider.trace; + +import lombok.AllArgsConstructor; +import lombok.Getter; +import lombok.NoArgsConstructor; +import lombok.Setter; +import lombok.ToString; +import lombok.extern.slf4j.Slf4j; +import org.apache.skywalking.apm.util.StringUtil; +import org.apache.skywalking.oap.server.analyzer.module.AnalyzerModule; +import org.apache.skywalking.oap.server.analyzer.provider.AnalyzerModuleConfig; +import org.apache.skywalking.oap.server.configuration.api.ConfigChangeWatcher; +import org.apache.skywalking.oap.server.core.Const; +import org.apache.skywalking.oap.server.library.module.ModuleProvider; +import org.apache.skywalking.oap.server.library.util.ResourceUtils; +import org.apache.skywalking.oap.server.library.util.yaml.ClassFilterConstructor; +import org.yaml.snakeyaml.Yaml; + +import java.io.Reader; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.atomic.AtomicReference; + +import static java.util.Objects.isNull; + +@Slf4j +public class TraceSamplingPolicyWatcher extends ConfigChangeWatcher { + + private final AtomicReference<String> settingsString = new AtomicReference<>(Const.EMPTY_STRING); + private final AtomicReference<SamplePolicySettings> samplePolicySettings = new AtomicReference<>(null); + private final AnalyzerModuleConfig moduleConfig; + + public TraceSamplingPolicyWatcher(AnalyzerModuleConfig moduleConfig, ModuleProvider provider) { + super(AnalyzerModule.NAME, provider, "traceSamplingPolicy"); + this.moduleConfig = moduleConfig; + loadDefaultPolicy(); + } + + @Override + public void notify(ConfigChangeEvent value) { + if (EventType.DELETE.equals(value.getEventType())) { + this.settingsString.set(""); + log.info("[trace-sampling-policy] Delete trace-sample-policy,use default config"); + loadDefaultPolicy(); + } else { + activeSetting(value.getNewValue()); + } + } + + @Override + public String value() { + return this.settingsString.get(); + } + + public SamplePolicy getSamplePolicy(String service) { + return this.samplePolicySettings.get().getPolicy(service); + } + + public int getSampleRate() { + return this.samplePolicySettings.get().global.rate; + } + + public int getSlowTraceSegmentThreshold() { + return this.samplePolicySettings.get().global.duration; + } + + public boolean shouldSample(int duration) { + return (this.samplePolicySettings.get().global.duration > -1) && (duration >= this.samplePolicySettings.get().global.duration); + } + + private void loadDefaultPolicy() { + SamplePolicySettings rateSetting = parseFromFile(moduleConfig.getTraceSamplingPolicySettingsFile()); + // If settingFile has a empty config, use the default settings + this.samplePolicySettings.set(rateSetting == null ? defaultSampleConfigSettings() : rateSetting); + log.info("[trace-sampling-policy] Default configured trace-sample-policy: {}", this.samplePolicySettings); + } + + private void activeSetting(String config) { + if (log.isDebugEnabled()) { + log.debug("[trace-sampling-policy] Updating using new config: {}", config); + } + onUpdated(parseFromYml(config)); + } + + private void onUpdated(final SamplePolicySettings samplePolicySettings) { + if (!isNull(samplePolicySettings)) { + this.samplePolicySettings.set(samplePolicySettings); + log.info("[trace-sampling-policy] Updating trace-sample-policy with: {}", samplePolicySettings); + } else if (StringUtil.isBlank(this.settingsString.get())) { + log.info("[trace-sampling-policy] Trace-sample-policy been set empty string,use default config"); + loadDefaultPolicy(); + } else { + log.info("[trace-sampling-policy] Parse yaml fail, retain last configuration: {}", this.samplePolicySettings); + } + } + + private SamplePolicySettings parseFromFile(final String file) { + try { + final Reader reader = ResourceUtils.read(file); + Map<String, Object> map = new Yaml(new ClassFilterConstructor(new Class[]{ + Map.class})).loadAs(reader, Map.class); + return mapToSettingObject(map); + } catch (Exception e) { + log.error("[trace-sampling-policy] Cannot load configs from: {}", file, e); + } + // It must have a default config on init + return defaultSampleConfigSettings(); + } + + private SamplePolicySettings parseFromYml(final String ymlContent) { + try { + Map<String, Object> map = new Yaml(new ClassFilterConstructor(new Class[]{ + Map.class})).loadAs(ymlContent, Map.class); + SamplePolicySettings setting = mapToSettingObject(map); + this.settingsString.set(ymlContent); + return setting; + } catch (Exception e) { + log.error("[trace-sampling-policy] Failed to parse yml content: \n{}", ymlContent, e); + } + // Config update maybe parse fail + return null; + } + + private SamplePolicySettings mapToSettingObject(Map<String, Object> map) { + // YmlContent maybe empty + if (map == null) { + return null; + } + SamplePolicySettings settings; + // default config + Object defaultMapObject = map.get("default"); + if (defaultMapObject != null) { + Map<String, Object> defaultMap = (Map<String, Object>) defaultMapObject; + settings = new SamplePolicySettings(defaultMap.get("rate") == null ? null : (Integer) defaultMap.get("rate"), + defaultMap.get("duration") == null ? null : (Integer) defaultMap.get("duration")); + } else { + settings = defaultSampleConfigSettings(); + } + // services config + Object servicesObject = map.get("services"); + if (servicesObject != null) { + List<Map<String, Object>> serviceList = (List<Map<String, Object>>) servicesObject; + serviceList.forEach(service -> { + String name = (String) service.get("name"); + if (StringUtil.isBlank(name)) { + return; + } + SamplePolicy samplePolicy = new SamplePolicy(); + samplePolicy.setRate(service.get("rate") == null ? null : (Integer) service.get("rate")); + samplePolicy.setDuration(service.get("duration") == null ? null : (Integer) service.get("duration")); + settings.addPolicy(name, samplePolicy); + }); + } + return settings; + } + + private SamplePolicySettings defaultSampleConfigSettings() { + return new SamplePolicySettings(null, null); + } + + @Getter + @Setter + @ToString + @AllArgsConstructor + @NoArgsConstructor + public static class SamplePolicy { + private Integer rate; + private Integer duration; + } + + @ToString + public static class SamplePolicySettings { + + @Getter Review comment: No Getter ########## File path: oap-server/analyzer/agent-analyzer/src/main/java/org/apache/skywalking/oap/server/analyzer/provider/trace/TraceSamplingPolicyWatcher.java ########## @@ -0,0 +1,217 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.skywalking.oap.server.analyzer.provider.trace; + +import lombok.AllArgsConstructor; +import lombok.Getter; +import lombok.NoArgsConstructor; +import lombok.Setter; +import lombok.ToString; +import lombok.extern.slf4j.Slf4j; +import org.apache.skywalking.apm.util.StringUtil; +import org.apache.skywalking.oap.server.analyzer.module.AnalyzerModule; +import org.apache.skywalking.oap.server.analyzer.provider.AnalyzerModuleConfig; +import org.apache.skywalking.oap.server.configuration.api.ConfigChangeWatcher; +import org.apache.skywalking.oap.server.core.Const; +import org.apache.skywalking.oap.server.library.module.ModuleProvider; +import org.apache.skywalking.oap.server.library.util.ResourceUtils; +import org.apache.skywalking.oap.server.library.util.yaml.ClassFilterConstructor; +import org.yaml.snakeyaml.Yaml; + +import java.io.Reader; +import java.util.List; +import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.atomic.AtomicReference; + +import static java.util.Objects.isNull; + +@Slf4j +public class TraceSamplingPolicyWatcher extends ConfigChangeWatcher { + + private final AtomicReference<String> settingsString = new AtomicReference<>(Const.EMPTY_STRING); + private final AtomicReference<SamplePolicySettings> samplePolicySettings = new AtomicReference<>(null); + private final AnalyzerModuleConfig moduleConfig; + + public TraceSamplingPolicyWatcher(AnalyzerModuleConfig moduleConfig, ModuleProvider provider) { + super(AnalyzerModule.NAME, provider, "traceSamplingPolicy"); + this.moduleConfig = moduleConfig; + loadDefaultPolicy(); + } + + @Override + public void notify(ConfigChangeEvent value) { + if (EventType.DELETE.equals(value.getEventType())) { + this.settingsString.set(""); + log.info("[trace-sampling-policy] Delete trace-sample-policy,use default config"); + loadDefaultPolicy(); + } else { + activeSetting(value.getNewValue()); + } + } + + @Override + public String value() { + return this.settingsString.get(); + } + + public SamplePolicy getSamplePolicy(String service) { + return this.samplePolicySettings.get().getPolicy(service); + } + + public int getSampleRate() { + return this.samplePolicySettings.get().global.rate; + } + + public int getSlowTraceSegmentThreshold() { + return this.samplePolicySettings.get().global.duration; + } + + public boolean shouldSample(int duration) { + return (this.samplePolicySettings.get().global.duration > -1) && (duration >= this.samplePolicySettings.get().global.duration); + } + + private void loadDefaultPolicy() { + SamplePolicySettings rateSetting = parseFromFile(moduleConfig.getTraceSamplingPolicySettingsFile()); + // If settingFile has a empty config, use the default settings + this.samplePolicySettings.set(rateSetting == null ? defaultSampleConfigSettings() : rateSetting); + log.info("[trace-sampling-policy] Default configured trace-sample-policy: {}", this.samplePolicySettings); + } + + private void activeSetting(String config) { + if (log.isDebugEnabled()) { + log.debug("[trace-sampling-policy] Updating using new config: {}", config); + } + onUpdated(parseFromYml(config)); + } + + private void onUpdated(final SamplePolicySettings samplePolicySettings) { + if (!isNull(samplePolicySettings)) { + this.samplePolicySettings.set(samplePolicySettings); + log.info("[trace-sampling-policy] Updating trace-sample-policy with: {}", samplePolicySettings); + } else if (StringUtil.isBlank(this.settingsString.get())) { + log.info("[trace-sampling-policy] Trace-sample-policy been set empty string,use default config"); + loadDefaultPolicy(); + } else { + log.info("[trace-sampling-policy] Parse yaml fail, retain last configuration: {}", this.samplePolicySettings); + } + } + + private SamplePolicySettings parseFromFile(final String file) { + try { + final Reader reader = ResourceUtils.read(file); + Map<String, Object> map = new Yaml(new ClassFilterConstructor(new Class[]{ + Map.class})).loadAs(reader, Map.class); + return mapToSettingObject(map); + } catch (Exception e) { + log.error("[trace-sampling-policy] Cannot load configs from: {}", file, e); + } + // It must have a default config on init + return defaultSampleConfigSettings(); + } + + private SamplePolicySettings parseFromYml(final String ymlContent) { + try { + Map<String, Object> map = new Yaml(new ClassFilterConstructor(new Class[]{ + Map.class})).loadAs(ymlContent, Map.class); + SamplePolicySettings setting = mapToSettingObject(map); + this.settingsString.set(ymlContent); + return setting; + } catch (Exception e) { + log.error("[trace-sampling-policy] Failed to parse yml content: \n{}", ymlContent, e); + } + // Config update maybe parse fail + return null; + } + + private SamplePolicySettings mapToSettingObject(Map<String, Object> map) { + // YmlContent maybe empty + if (map == null) { + return null; + } + SamplePolicySettings settings; + // default config + Object defaultMapObject = map.get("default"); + if (defaultMapObject != null) { + Map<String, Object> defaultMap = (Map<String, Object>) defaultMapObject; + settings = new SamplePolicySettings(defaultMap.get("rate") == null ? null : (Integer) defaultMap.get("rate"), + defaultMap.get("duration") == null ? null : (Integer) defaultMap.get("duration")); + } else { + settings = defaultSampleConfigSettings(); + } + // services config + Object servicesObject = map.get("services"); + if (servicesObject != null) { + List<Map<String, Object>> serviceList = (List<Map<String, Object>>) servicesObject; + serviceList.forEach(service -> { + String name = (String) service.get("name"); + if (StringUtil.isBlank(name)) { + return; + } + SamplePolicy samplePolicy = new SamplePolicy(); + samplePolicy.setRate(service.get("rate") == null ? null : (Integer) service.get("rate")); + samplePolicy.setDuration(service.get("duration") == null ? null : (Integer) service.get("duration")); + settings.addPolicy(name, samplePolicy); + }); + } + return settings; + } + + private SamplePolicySettings defaultSampleConfigSettings() { + return new SamplePolicySettings(null, null); + } + + @Getter + @Setter + @ToString + @AllArgsConstructor + @NoArgsConstructor + public static class SamplePolicy { + private Integer rate; + private Integer duration; + } + + @ToString + public static class SamplePolicySettings { + + @Getter + // `default` is the keyword ,so named `global` + private SamplePolicy global; + @Getter Review comment: No Getter -- This is an automated message from the Apache Git Service. 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