How to compile .proto files to project folder?

[AlexInCube]

I want to compile just the files into the root of the project, but I'm having trouble. I tried to make this code, but it gives an error.
My proto files are above the Java project in the hierarchy, because the Java project is one of the projects in the monorepository.

Illegal char <:> at index 81: C:\webprojects\micro-keynadi\apps\eximia-auth\build\generated\source\proto\main\C:\webprojects\micro-keynadi\apps\eximia-auth\src\main\generatedProto

plugins {
    id 'java'
    id 'eclipse'
    id 'org.jetbrains.gradle.plugin.idea-ext' version '1.1.8'
    id 'com.google.protobuf' version '0.9.4'
}

sourceSets {
    main {
        proto {
            srcDir '../../proto'
        }
        java {
            srcDir "${projectDir}/src/main/generatedProto"
        }
    }
}


protobuf {
    protoc {
        artifact = "com.google.protobuf:protoc:3.25.5"
    }
    plugins {
        grpc {
            artifact = 'io.grpc:protoc-gen-grpc-java:1.68.1'
        }
    }
    generateProtoTasks {
        all().each { task ->
            task.builtins {
                java {
                    outputSubDir = "${projectDir}/src/main/generatedProto"
                }
            }
            task.plugins {
                grpc {
                    outputSubDir = "${projectDir}/src/main/generatedProto"
                }
            }
        }
    }
}

[ejona86]

outputSubDir can't move it to another part of the tree. It is a subdirectory. That's why there's the random broken C: in the middle of the string "...proto\main\C:\webprojects...". I suggest deleting the outputSubDir lines

[AlexInCube]

then how do i do the compilation to the folder i want? i have spent hours trying to figure it out but nothing works.

[ejona86]

You can use a separate Sync or Copy task into the folder of your choosing. google/protobuf-gradle-plugin#722 tracks letting it be configured.

[kannanjgithub]

The generateProtoTasks plugin uses the default outputSubDir of build/generated/source/proto/main under which it will create a "java" and "grpc" subdirs for the generated sources for the protos and the service respectively. So in your source sets you need to also change the paths for Java (for IDEs to pick up) from

    java {
        srcDir "${projectDir}/src/main/generatedProto"
    }

to

    java {
        srcDirs 'build/generated/source/proto/main/grpc'
        srcDirs 'build/generated/source/proto/main/java'
    }

Refer (example).

[ejona86]

srcDirs 'build/generated/source/proto/main/grpc' will actually only break things. The protobuf plugin adds those source dirs, with proper dependency information so Gradle knows when they need to be rebuilt. The problem with IDEs is they require the directories to exist when it loads the project. I think that's a different problem than what was being seen in this issue.

[ejona86]

Seems like this is resolved. If not, comment, and it can be reopened.