问题
I'm getting below SSL error while fetching the time series List from Google Monitoring api. Is there any way to add custom SSL factory or custom trust in google monitoring client to make a secure call ?
ListTimeSeriesResponse response = mServiceClient
.listTimeSeriesCallable().call(request);
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302) at sun.security.validator.Validator.validate(Validator.java:262) at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:281) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:136) at io.grpc.netty.shaded.io.netty.handler.ssl.OpenSslTlsv13X509ExtendedTrustManager.checkServerTrusted(OpenSslTlsv13X509ExtendedTrustManager.java:221) at io.grpc.netty.shaded.io.netty.handler.ssl.ReferenceCountedOpenSslClientContext$ExtendedTrustManagerVerifyCallback.verify(ReferenceCountedOpenSslClientContext.java:248) at io.grpc.netty.shaded.io.netty.handler.ssl.ReferenceCountedOpenSslContext$AbstractCertificateVerifier.verify(ReferenceCountedOpenSslContext.java:699) at io.grpc.netty.shaded.io.netty.internal.tcnative.SSL.readFromSSL(Native Method) at io.grpc.netty.shaded.io.netty.handler.ssl.ReferenceCountedOpenSslEngine.readPlaintextData(ReferenceCountedOpenSslEngine.java:589) at io.grpc.netty.shaded.io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:1172) at io.grpc.netty.shaded.io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:1289) at io.grpc.netty.shaded.io.netty.handler.ssl.SslHandler$SslEngineType$1.unwrap(SslHandler.java:199) at io.grpc.netty.shaded.io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1329) ... 21 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392) ... 35 more
来源：https://stackoverflow.com/questions/59766881/how-to-call-google-time-series-monitoring-api-with-sslsocket-factory