[BEAM-13156] [Playground] Implement streaming output for the run code logs

• Type: Sub-task
• Status: Resolved
• Priority: P3
• Resolution: Implemented
• Fix Version/s: Missing
• Component/s: beam-playground
• Labels: beam-playground-backend beam-playground-sprint-3
• Assignee: Aydar Zaynutdinov
• Reporter: Aydar Zaynutdinov
• Created: 01/Nov/21 13:52
• Updated: 13/Jan/22 21:48
• Resolved: 23/Nov/21 09:06

Description

Implement streaming output for the run code logs:

• set output variable (runOutput) for runCmd object to keep all logs from the run code step.
• using additional goroutine to read from runOutput variable and add this output to cache (pipelineId:RunOutput:output) until runCmd runs code.
• update GetRunOutput method to return existing logs from the run step. Also need to keep numbers of already returning lines to prevent duplicates.

Issue Links

• links to: GitHub Pull Request #15996