[BEAM-10622] Prefix Gradle paths with a colon for user-facing output

• Type: Bug
• Status: Resolved
• Priority: P3
• Resolution: Fixed
• Fix Version/s: 2.24.0
• Component/s: sdk-py-core
• Assignee: Maximilian Michels
• Reporter: Maximilian Michels
• Created: 03/Aug/20 09:12
• Updated: 15/May/21 17:58
• Resolved: 15/May/21 17:58

Description

When using the FlinkRunner with master, the job server needs to be build first. Beam prints out instructions for that, e.g.

RuntimeError: /Users/max/Dev/beam/runners/flink/1.10/job-server/build/libs/beam-runners-flink-1.10-job-server-2.24.0-SNAPSHOT.jar not found. Please build the server with
  cd /Users/max/Dev/beam; ./gradlew runners:flink:1.10:job-server:shadowJar

Note that the gradle path printed is not valid because it misses a colon before "runners".

Internally, the Gradle path is used to resolve the jar locally or from Maven Central. Gradle paths always start with a colon. We should stick to that format although we can also parse Gradle paths which do not start with a colon.

In order for the Gradle path printed to be valid, we should prefix Gradle path with colon.

Issue Links

• links to: GitHub Pull Request #12449