Customize graphql-kotlin logging

[FidasL]

Hello.
Please, is there a way how to customize graphql-kotlin-server logs? They contains everything that we need, but in some requests we use binary data. Then in DEBUG level, our logs are overfilled with binary data so there is a problem to read from them any useful information. Is there any option to log some graphql variables as [binary] or something like that?

[FidasL]

Trying to somehow configure it with custom logback filter / messageConverter implementation. We will see if it will help

[smyrick]

Other than for subscriptions, we really don't have any logs except on startup to log the schema. What logs are you interested in? We are using org.slf4j.LoggerFactory so you can provide your own implementation and change what level of data is logged.

The only debug level log we have is the following:

graphql-kotlin/servers/graphql-kotlin-spring-server/src/main/kotlin/com/expediagroup/graphql/server/spring/subscriptions/ApolloSubscriptionProtocolHandler.kt

Line 64 in f20e65b

logger.debug("GraphQL subscription client message, sessionId=${session.id} operationMessage=$operationMessage")

[FidasL]

Debug level is logging incoming graphql query with provided variables. The main issue is that this logger logs a lot of base64 binary data provided in request variables.

I want to only log for example something like variables: image=[binary] instead of base64 string

[dariuszkuc]

This is actually coming from graphql-java -> https://github.com/graphql-java/graphql-java/blob/16.x/src/main/java/graphql/GraphQL.java#L432

You can probably customize your logger to exclude graphql-java logs and use something like a custom interceptor instead.