ExpressionParser | A simple lib in C # for parsing and evaluating expressions | Parser library

I'm trying to use Idris 2's Text.Parser library to parse a pre-tokenized byte stream. I wrote the following utility function in the style of Parsec's expression parser:

I'm trying to read a map of lists from application.properties in a spring batch application

I'm parsing a chunk of text using the spring SpelExpressionParser + TemplateParserContext to replace parts of the string. I'm setting a map as the root object of the context.

When I type in the URL bar: http://localhost:8080/greeting?name=john

I get this: EL1007E: Property or field 'john' cannot be found on null

I noticed that I get the correct output when I changed String message = (String) exp.getValue(); to String message = (String) exp.toString();

Why does this happen? Am I using getValue() wrong?

I am trying to figure out how to define Pointcuts and how to handle multiple annotations using spring AOP.

I have the following custom annotations:

@RequiresNonBlank

I'm writing a parser in Go and I have a following code for ast construction:

I am trying to mimic the @Value annotation programmatically by retrieving a property from the properties file using Environment and then evaluate the expression using SpelExpressionParser.

Here is a code snippet:

I have two microservices and a gateway. one microservice is developed with JHipster and spring boot(Service1), and the other has the spring integration framework(IntegrationService). Now I need to call the service1 API from the IntegrationService. I am using HTTPS for communication in both microservice. But when called the API I got the following error log.

2021-05-05 11:05:45.503 INFO 22105 --- [ XNIO-1 task-4] c.m.a.s.IntegrationService : exception in IntegrationService org.springframework.messaging.MessageHandlingException: HTTP request execution failed for URI [https:///gateway/services/service1/api/viewrecords?id=100100100100157] in the [bean 'outboundGateway'; defined in: 'class path resource [com/esi/app/service/IntegrationService.class]'; from source: 'org.springframework.core.type.classreading.SimpleMethodMetadata@3fa2213']; nested exception is org.springframework.web.client.ResourceAccessException: I/O error on GET request for "https:///gateway/services/service1/api/viewrecords": PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target; nested exception is javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target, failedMessage=GenericMessage [payload={custId=100100100100157}, headers={http_requestMethod=GET, errorChannel=org.springframework.messaging.core.GenericMessagingTemplate$TemporaryReplyChannel@703c6baf, Connection=Keep-Alive, Host=:port, accept=/, authorization=Bearer eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiJhZG1pbiIsImF1dGgiOiJST0xFX0FETUlOLFJPTEVfVVNFUiIsImV4cCI6MTYyMDI3ODk4NH0.-4ByR7OQY-G_dZh7XUHYOSo3FRS2Ug6JxVOkq6XOmhUV05LnQj10puEGotcJk1EUlYDvt4n2dAJFSuR3evnvHA, replyChannel=org.springframework.messaging.core.GenericMessagingTemplate$TemporaryReplyChannel@703c6baf, http_requestUrl=http://:/api/getrecordsfromservice1?transactionId=1111111111&id=100100100100157, id=1eec8d00-4040-c9b2-cdb1-4f2d8743d007, Content-Length=0, http_userPrincipal=org.springframework.security.authentication.UsernamePasswordAuthenticationToken@143b9e60: Principal: org.springframework.security.core.userdetails.User@586034f: Username: admin; Password: [PROTECTED]; Enabled: true; AccountNonExpired: true; credentialsNonExpired: true; AccountNonLocked: true; Granted Authorities: ROLE_ADMIN,ROLE_USER; Credentials: [PROTECTED]; Authenticated: true; Details: null; Granted Authorities: ROLE_ADMIN, ROLE_USER, accept-encoding=gzip, deflate, br, user-agent=PostmanRuntime/7.28.0, timestamp=1620192945487}]

The API end point I used to invoke the IntegrationService is,

https:///gateway/services/integration/api/getrecordsfromservice1?transactionId=1111111111&id=100100100100157

integration is the service name registered in the gateway for IntegrationService. similarly, service1 is for Service1.

The things I am not able able to understand are:

1. how did the "http_requestUrl" changed to the one in the log, rather than the endpoint that I am hitting?
2. Why did the "SunCertPathBuilderException" occurred even though I am using HTTPS in both microservice?
3. To get the "Host" message header, is the spring framework look for the IP and port on the config files, application.yml, rather than checking the URL?

Can anyone please help? @artem

My inbound and outbound gateways are given below:

My spring integration application reads files from a fileshare, does some processing including api calls etc. In case something goes wrong in between I would like to use a afterRollbakExpression to write the file to a failed directory in the file share/ftp/sftp etc.

I found an example of doing the same to a local file directory as follows,