Spring Cloud实战小贴士：turbine如何聚合设置了context-path的hystr

INFO 7812 --- [        Timer-0] c.n.t.monitor.instance.InstanceMonitor   : Url for host: http://172.15.0.18:9020/hystrix.stream defaultERROR 7812 --- [InstanceMonitor] c.n.t.monitor.instance.InstanceMonitor   : Could not initiate connection to host, giving up: [{"timestamp":1499941336284,"status":404,"error":"Not Found","message":"No message available","path":"/hystrix.stream"}]WARN 7812 --- [InstanceMonitor] c.n.t.monitor.instance.InstanceMonitor   : Stopping InstanceMonitor for: 172.15.0.18:9020 defaultcom.netflix.turbine.monitor.instance.InstanceMonitor$MisconfiguredHostException: [{"timestamp":1499941336284,"status":404,"error":"Not Found","message":"No message available","path":"/hystrix.stream"}]	at com.netflix.turbine.monitor.instance.InstanceMonitor.init(InstanceMonitor.java:318) ~[turbine-core-1.0.0.jar:na]	at com.netflix.turbine.monitor.instance.InstanceMonitor.access$100(InstanceMonitor.java:103) ~[turbine-core-1.0.0.jar:na]	at com.netflix.turbine.monitor.instance.InstanceMonitor$2.call(InstanceMonitor.java:235) [turbine-core-1.0.0.jar:na]	at com.netflix.turbine.monitor.instance.InstanceMonitor$2.call(InstanceMonitor.java:229) [turbine-core-1.0.0.jar:na]	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_91]	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_91]	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_91]	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]

public static InstanceUrlClosure ClusterConfigBasedUrlClosure = new InstanceUrlClosure() {private final DynamicStringProperty defaultUrlClosureConfig = DynamicPropertyFactory			.getInstance().getStringProperty("turbine.instanceUrlSuffix",				    	"hystrix.stream");private final DynamicBooleanProperty instanceInsertPort = DynamicPropertyFactory				.getInstance().getBooleanProperty("turbine.instanceInsertPort", true);@Overridepublic String getUrlPath(Instance host) {if (host.getCluster() == null) {throw new RuntimeException("Host must have cluster name in order to use ClusterConfigBasedUrlClosure");		}// find url		String key = "turbine.instanceUrlSuffix." + host.getCluster();		DynamicStringProperty urlClosureConfig = DynamicPropertyFactory.getInstance()					.getStringProperty(key, null);		String url = urlClosureConfig.get();if (url == null) {			url = this.defaultUrlClosureConfig.get();		}if (url == null) {throw new RuntimeException("Config property: "					+ urlClosureConfig.getName() + " or "					+ this.defaultUrlClosureConfig.getName() + " must be set");		}// find port and scheme		String port;		String scheme;if (host.getAttributes().containsKey("securePort")) {			port = host.getAttributes().get("securePort");			scheme = "https";		} else {			port = host.getAttributes().get("port");			scheme = "http";		}if (host.getAttributes().containsKey("fusedHostPort")) {return String.format("%s://%s/%s", scheme, host.getAttributes().get("fusedHostPort"), url);		}// determine if to insert port		String insertPortKey = "turbine.instanceInsertPort." + host.getCluster();		DynamicStringProperty insertPortProp = DynamicPropertyFactory.getInstance()					.getStringProperty(insertPortKey, null);boolean insertPort;if (insertPortProp.get() == null) {			insertPort = this.instanceInsertPort.get();		}else {			insertPort = Boolean.parseBoolean(insertPortProp.get());		}// format url with portif (insertPort) {if (url.startsWith("/")) {				url = url.substring(1);			}if (port == null) {throw new RuntimeException("Configured to use port, but port or securePort is not in host attributes");			}return String.format("%s://%s:%s/%s", scheme, host.getHostname(), port, url);		}//format url without portreturn scheme + "://" + host.getHostname() + url;	}};