Google Pub / Sub模拟器-模拟器未在本地主机上运行时，HTTP API不起作用

时间：2019-08-16 10:20:18

标签： google-cloud-pubsub

上下文

我正在实现基于Apache Camel的集成应用程序，该应用程序必须与Google Pub / Sub基础结构接口。为此，我使用了专用的Camel PubSub component，它基于Google PubSub HTTP Service API

在开发和测试阶段，我想使用PubSub Emulator，并使其在共享的DEV环境中可用，以便整个DEV团队都可以访问它。

问题

在本地主机上运行模拟器时，一切工作正常：REST HTTP API可用（例如，用于创建主题和订阅），并且Camel路由正确使用了消息。

gcloud beta emulators pubsub start --host-port=localhost:8085

API调用结果（创建主题）：

$ curl -X PUT -v   http://localhost:8085/v1/projects/test-project/topics/topic-data

HTTP/1.1 200 OK
content-type: application/json

{ "name": "projects/test-project/topics/topic-data"}

但是，一旦我使用不同于-host的{​​{1}}参数（例如，使用我的主IP地址）启动仿真器，REST API将不再起作用，并始终返回localhost：< / p> 

503 UNAVAILABLE

尝试创建主题时的结果：

gcloud beta emulators pubsub start --host-port=[MY_IP_ADDRESS]:8085

我已将仿真器日志级别更改为FINEST，但是日志中没有任何内容可以解释此行为：

$ curl -X PUT -v   http://[MY_IP_ADDRESS]:8085/v1/projects/test-project/topics/topic-data

HTTP/1.1 503 Service Unavailable
content-type: application/json
{"error":{"code":503,"message":"io exception","status":"UNAVAILABLE"}}

（请注意，在本地主机上运行模拟器时也会出现消息INFOS: Server started, listening on 8085 aout 16, 2019 11:43:51 AM io.netty.buffer.AbstractByteBuf <clinit> PRECIS: -Dio.netty.buffer.checkAccessible: true aout 16, 2019 11:43:51 AM io.netty.buffer.AbstractByteBuf <clinit> PRECIS: -Dio.netty.buffer.checkBounds: true aout 16, 2019 11:43:51 AM io.netty.util.ResourceLeakDetectorFactory$DefaultResourceLeakDetectorFactory newResourceLeakDetector PRECIS: Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@280b84c6 aout 16, 2019 11:43:51 AM io.gapi.emulators.grpc.GrpcServer$3 operationComplete INFOS: Adding handler(s) to newly registered Channel. aout 16, 2019 11:43:51 AM io.netty.handler.logging.LoggingHandler channelRegistered PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] REGISTERED aout 16, 2019 11:43:51 AM io.netty.handler.logging.LoggingHandler channelActive PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] ACTIVE aout 16, 2019 11:43:51 AM io.netty.util.Recycler <clinit> PRECIS: -Dio.netty.recycler.maxCapacityPerThread: 4096 aout 16, 2019 11:43:51 AM io.netty.util.Recycler <clinit> PRECIS: -Dio.netty.recycler.maxSharedCapacityFactor: 2 aout 16, 2019 11:43:51 AM io.netty.util.Recycler <clinit> PRECIS: -Dio.netty.recycler.linkCapacity: 16 aout 16, 2019 11:43:51 AM io.netty.util.Recycler <clinit> PRECIS: -Dio.netty.recycler.ratio: 8 aout 16, 2019 11:43:51 AM io.netty.handler.logging.LoggingHandler channelRead PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] READ: 285B +-------------------------------------------------+ | 0 1 2 3 4 5 6 7 8 9 a b c d e f | +--------+-------------------------------------------------+----------------+ |00000000| 50 55 54 20 2f 76 31 2f 70 72 6f 6a 65 63 74 73 |PUT /v1/projects| |00000010| 2f 74 65 73 74 2d 70 72 6f 6a 65 63 74 2f 74 6f |/test-project/to| |00000020| 70 69 63 73 2f 74 6f 70 69 63 2d 64 61 74 61 20 |pics/topic-data | |00000030| 48 54 54 50 2f 31 2e 31 0d 0a 55 73 65 72 2d 41 |HTTP/1.1..User-A| |00000040| 67 65 6e 74 3a 20 50 6f 73 74 6d 61 6e 52 75 6e |gent: PostmanRun| |00000050| 74 69 6d 65 2f 37 2e 31 35 2e 32 0d 0a 41 63 63 |time/7.15.2..Acc| |00000060| 65 70 74 3a 20 2a 2f 2a 0d 0a 43 61 63 68 65 2d |ept: */*..Cache-| |00000070| 43 6f 6e 74 72 6f 6c 3a 20 6e 6f 2d 63 61 63 68 |Control: no-cach| |00000080| 65 0d 0a 50 6f 73 74 6d 61 6e 2d 54 6f 6b 65 6e |e..Postman-Token| |00000090| 3a 20 66 31 61 38 33 63 35 36 2d 36 66 38 66 2d |: f1a83c56-6f8f-| |000000a0| 34 65 35 32 2d 38 64 35 35 2d 64 64 66 66 64 37 |4e52-8d55-ddffd7| |000000b0| 37 38 66 64 36 65 0d 0a 48 6f 73 74 3a 20 31 30 |78fd6e..Host: a.| |000000c0| 2e 32 2e 34 31 2e 31 39 32 3a 38 30 38 35 0d 0a |.b.c.d:8085.....| |000000d0| 41 63 63 65 70 74 2d 45 6e 63 6f 64 69 6e 67 3a |Accept-Encoding:| |000000e0| 20 67 7a 69 70 2c 20 64 65 66 6c 61 74 65 0d 0a | gzip, deflate..| |000000f0| 43 6f 6e 74 65 6e 74 2d 4c 65 6e 67 74 68 3a 20 |Content-Length: | |00000100| 30 0d 0a 43 6f 6e 6e 65 63 74 69 6f 6e 3a 20 6b |0..Connection: k| |00000110| 65 65 70 2d 61 6c 69 76 65 0d 0a 0d 0a |eep-alive.... | +--------+-------------------------------------------------+----------------+ aout 16, 2019 11:43:51 AM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead INFOS: Detected non-HTTP/2 connection. aout 16, 2019 11:43:51 AM io.netty.handler.logging.LoggingHandler channelReadComplete PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] READ COMPLETE aout 16, 2019 11:43:51 AM io.grpc.Context createStorage PRECIS: Storage override doesn't exist. Using default java.lang.ClassNotFoundException: io.grpc.override.ContextStorageOverride at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at io.grpc.Context.createStorage(Context.java:137) at io.grpc.Context.storage(Context.java:129) at io.grpc.Context.current(Context.java:181) at io.grpc.Context$Key.get(Context.java:891) at io.grpc.internal.CensusTracingModule$TracingClientInterceptor.interceptCall(CensusTracingModule.java:385) at io.grpc.ClientInterceptors$InterceptorChannel.newCall(ClientInterceptors.java:156) at io.grpc.internal.CensusStatsModule$StatsClientInterceptor.interceptCall(CensusStatsModule.java:691) at io.grpc.ClientInterceptors$InterceptorChannel.newCall(ClientInterceptors.java:156) at io.grpc.internal.ManagedChannelImpl.newCall(ManagedChannelImpl.java:819) at io.grpc.internal.ForwardingManagedChannel.newCall(ForwardingManagedChannel.java:63) at io.grpc.stub.MetadataUtils$HeaderAttachingClientInterceptor.interceptCall(MetadataUtils.java:74) at io.grpc.ClientInterceptors$InterceptorChannel.newCall(ClientInterceptors.java:156) at com.google.pubsub.v1.PublisherGrpc$PublisherStub.createTopic(PublisherGrpc.java:673) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at io.gapi.emulators.grpc.ProtoReflectionUtil.invoke(ProtoReflectionUtil.java:159) at io.gapi.emulators.grpc.HttpAdapter$UnaryMethodHandler.handle(HttpAdapter.java:531) at io.gapi.emulators.grpc.HttpAdapter.handleRequest(HttpAdapter.java:165) at io.gapi.emulators.netty.HttpHandler.channelRead(HttpHandler.java:52) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:297) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:38) at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:350) at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:495) at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) at java.lang.Thread.run(Thread.java:748) aout 16, 2019 11:43:51 AM io.netty.handler.logging.LoggingHandler flush PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] FLUSH aout 16, 2019 11:43:51 AM io.grpc.internal.DnsNameResolver$Resolve resolveInternal PRECIS: No TXT records found for localhost aout 16, 2019 11:43:53 AM io.gapi.emulators.netty.HttpHandler$1 onError INFOS: Exception when handling request: UNAVAILABLE: io exception aout 16, 2019 11:43:53 AM io.netty.handler.logging.LoggingHandler write PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] WRITE: 158B +-------------------------------------------------+ | 0 1 2 3 4 5 6 7 8 9 a b c d e f | +--------+-------------------------------------------------+----------------+ |00000000| 48 54 54 50 2f 31 2e 31 20 35 30 33 20 53 65 72 |HTTP/1.1 503 Ser| |00000010| 76 69 63 65 20 55 6e 61 76 61 69 6c 61 62 6c 65 |vice Unavailable| |00000020| 0d 0a 63 6f 6e 74 65 6e 74 2d 74 79 70 65 3a 20 |..content-type: | |00000030| 61 70 70 6c 69 63 61 74 69 6f 6e 2f 6a 73 6f 6e |application/json| |00000040| 0d 0a 63 6f 6e 74 65 6e 74 2d 6c 65 6e 67 74 68 |..content-length| |00000050| 3a 20 37 30 0d 0a 0d 0a 7b 22 65 72 72 6f 72 22 |: 70....{"error"| |00000060| 3a 7b 22 63 6f 64 65 22 3a 35 30 33 2c 22 6d 65 |:{"code":503,"me| |00000070| 73 73 61 67 65 22 3a 22 69 6f 20 65 78 63 65 70 |ssage":"io excep| |00000080| 74 69 6f 6e 22 2c 22 73 74 61 74 75 73 22 3a 22 |tion","status":"| |00000090| 55 4e 41 56 41 49 4c 41 42 4c 45 22 7d 7d |UNAVAILABLE"}} | +--------+-------------------------------------------------+----------------+ aout 16, 2019 11:43:53 AM io.netty.handler.logging.LoggingHandler flush PRECIS: [id: 0x369f8b68, L:/a.b.c.d:8085 - R:/a.b.c.d:49246] FLUSH ，所以我不确定是否可能是此原因）

注意，gRPC API在两种情况下（本地主机和特定IP地址）都可以正常工作，但是很遗憾，我无法使用此协议，因为Camel PubSub组件不支持该协议。

1 个答案:

答案 0 :(得分：0)

我认为我过去也遇到过同样的问题，不同之处在于我做的事情有所不同，但是每当我在url中使用ip时，url就无法访问。

有些时候，当我们使用本地系统时，您将不得不调整防火墙以使您的请求通过。对我来说，它就像是一种魅力。我承认我所做的只是禁用防火墙，但目前安全性对我而言并不那么重要。

希望这会有所帮助。如果您发现是否还有其他问题，请发表文章，对此我感到很好奇，因为我必须经常使用pubsub服务。

谢谢。

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