Problems with SSL certificate

Hi,

I try to use this CLI in my project to generate my API typescript client. But my swagger.yaml file is on a https url and I have errors because of SSL certificate.

I added the following script to my package.json :

"swagger": "./node_modules/.bin/openapi-generator generate -i https://myserver/api-docs -g typescript-fetch -o src/services/Api/swagger"

But when I run npm swagger I have the following stack trace :

[main] ERROR i.s.parser.SwaggerCompatConverter - failed to read resource listing                                                                                                                                                                                                javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target                                                      at sun.security.ssl.Alerts.getSSLException(Unknown Source)                                                                                                                                                                                                                      
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)                                                                                                                                                                                                                         
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)                                                                                                                                                                                                                          
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)                                                                                                                                                                                                                          
at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)                                                                                                                                                                                                          
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)                                                                                                                                                                                                             
at sun.security.ssl.Handshaker.processLoop(Unknown Source)                                                                                                                                                                                                                      
at sun.security.ssl.Handshaker.process_record(Unknown Source)                                                                                                                                                                                                                   
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)                                                                                                                                                                                                                    
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)                                                                                                                                                                                                       
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)                                                                                                                                                                                                                
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)                                                                                                                                                                                                                
at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)                                                                                                                                                                                                          
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)                                                                                                                                                                                        
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)                                                                                                                                                                                                    
at io.swagger.parser.util.RemoteUrl.urlToString(RemoteUrl.java:134)                                                                                                                                                                                                             
at io.swagger.parser.SwaggerCompatConverter.readResourceListing(SwaggerCompatConverter.java:193)                                                                                                                                                                                
at io.swagger.parser.SwaggerCompatConverter.read(SwaggerCompatConverter.java:123)                                                                                                                                                                                               
at io.swagger.parser.SwaggerCompatConverter.readWithInfo(SwaggerCompatConverter.java:94)                                                                                                                                                                                        
at io.swagger.parser.SwaggerParser.readWithInfo(SwaggerParser.java:42)                                                                                                                                                                                                          
at io.swagger.v3.parser.converter.SwaggerConverter.readLocation(SwaggerConverter.java:92)                                                                                                                                                                                       
at io.swagger.parser.OpenAPIParser.readLocation(OpenAPIParser.java:19)                                                                                                                                                                                                          
at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:606)                                                                                                                                                                           
at org.openapitools.codegen.cmd.Generate.run(Generate.java:367)                                                                                                                                                                                                                 
at org.openapitools.codegen.OpenAPIGenerator.main(OpenAPIGenerator.java:60)                                                                                                                                                                                             Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target                                                                                at sun.security.validator.PKIXValidator.doBuild(Unknown Source)                                                                                                                                                                                                                 
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)                                                                                                                                                                                                          
at sun.security.validator.Validator.validate(Unknown Source)                                                                                                                                                                                                                    
at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)                                                                                                                                                                                                               
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)                                                                                                                                                                                                           
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)                                                                                                                                                                                                     ... 21 common frames omitted                                                                                                                                                                                                                                            
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target                                                                                                                                                      
at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)                                                                                                                                                                                                      
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)                                                                                                                                                                                                
at java.security.cert.CertPathBuilder.build(Unknown Source)                                                                                                                                                                                                                     
... 27 common frames omitted                                                                                                                                                                                                                                            
Exception in thread "main" java.lang.NullPointerException                                                                                                                                                                                                                               
at java.util.HashSet.(Unknown Source)                                                                                                                                                                                                                                     
at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:608)                                                                                                                                                                           
at org.openapitools.codegen.cmd.Generate.run(Generate.java:367)                                                                                                                                                                                                                 
at org.openapitools.codegen.OpenAPIGenerator.main(OpenAPIGenerator.java:60)
--

Any idea how I could solve this ?

Reproduce the package.json command against the HTTPS swagger.yaml URL, then trace the failure through io.swagger.parser.util.RemoteUrl.urlToString, SwaggerCompatConverter, OpenAPIParser, and CodegenConfigurator as shown in the stack trace. Establish the expected handling for the certificate error and verify that the generator no longer fails with the reported handshake and NullPointerException.