startup error propagation

[MohamedRady-99]

This PR resolves issue #27 by implementing a robust error handling mechanism for activity failures.

Proposal
This change introduces a comprehensive startup error handling mechanism to ensure the system fails gracefully. The implemented behavior is as follows:

• Error Reporting: Activities can now report a failure from their startup() function by returning a Result. This is critical for handling initialization failures like resource allocation errors.
• Error Propagation: The error is propagated from the Activity through its Worker up to the central Scheduler.
• Graceful Shutdown: Upon receiving a startup error, the Scheduler:

1. Immediately aborts the startup sequence for any remaining activities.
2. Initiates a graceful shutdown for only the activities that have already started successfully.
3. Terminates the primary process and all associated agents.

Thanks

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
Starting local Bazel server (8.3.0) and connecting to it...
INFO: Invocation ID: 41e2d974-1bb9-488f-a240-971e4795949a
Computing main repo mapping: 
Computing main repo mapping: 
DEBUG: Rule 'rules_boost+' indicated that a canonical reproducible form can be obtained by modifying arguments integrity = "sha256-pZY3kJDKUFN829ZdmWOrWu/MhcmnwKJyhAsIfTbfVPU="
DEBUG: Repository rules_boost+ instantiated at:
  <builtin>: in <toplevel>
Repository rule http_archive defined at:
  /home/runner/.bazel/external/bazel_tools/tools/build_defs/repo/http.bzl:394:31: in <toplevel>
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
Computing main repo mapping: 
WARNING: For repository 'rules_cc', the root module requires module version rules_cc@0.2.8, but got rules_cc@0.2.14 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
WARNING: For repository 'googletest', the root module requires module version googletest@1.17.0, but got googletest@1.17.0.bcr.2 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
WARNING: For repository 'rules_python', the root module requires module version rules_python@1.4.1, but got rules_python@1.5.1 in the resolved dependency graph. Please update the version in your MODULE.bazel or set --check_direct_dependencies=off
Computing main repo mapping: 
Loading: 
Loading: 4 packages loaded
Loading: 4 packages loaded
    currently loading: 
Analyzing: target //:license-check (5 packages loaded, 0 targets configured)
Analyzing: target //:license-check (5 packages loaded, 0 targets configured)

Analyzing: target //:license-check (81 packages loaded, 9 targets configured)

Analyzing: target //:license-check (88 packages loaded, 9 targets configured)

Analyzing: target //:license-check (150 packages loaded, 2889 targets configured)

Analyzing: target //:license-check (156 packages loaded, 7055 targets configured)

Analyzing: target //:license-check (156 packages loaded, 7055 targets configured)

INFO: Analyzed target //:license-check (159 packages loaded, 9071 targets configured).
[9 / 13] Creating runfiles tree bazel-out/k8-opt-exec-ST-d57f47055a04/bin/external/score_tooling+/dash/tool/formatters/dash_format_converter.runfiles [for tool]; 0s local ... (2 actions, 1 running)
INFO: From Generating Dash formatted dependency file ...:
INFO: Successfully converted 2 packages from Cargo.lock to bazel-out/k8-fastbuild/bin/formatted.txt
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 21.275s, Critical Path: 0.42s
INFO: 13 processes: 4 disk cache hit, 9 internal.
INFO: Build completed successfully, 13 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]

[github-actions]

The created documentation from the pull request is available at: docu-html

[MohamedRady-99]

Hi @armin-acn, could you please review the PR so we can proceed with merging it?

[MohamedRady-99]

Hello @armin-acn, I see that you have approved the PR. Could you please proceed with merging it when convenient?