Delete each version directory individually so that a symlinked one is skipped rather than removed, take an `ActionState` so the environment is read through `ReadOnlyEnv` rather than the deprecated `getOptionalEnvVar`, let `deleteToolcacheBundles` report its own failure to locate the toolcache instead of having the caller catch it, quote paths in log messages, and rename `HAS_OBTAINED_CODEQL_TOOLS` to `HAS_SET_UP_CODEQL`, which is also set when we find the tools in the toolcache rather than downloading them.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Some runner images keep the toolcache on a different volume to the workspace, so deleting the tools there frees up disk space that the analysis cannot use, and costs a later step that wanted them in the toolcache a download. Windows runners are laid out this way, with the toolcache on `C:` and the workspace on `D:`.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Run the cleanup even when the download will not be cached in the toolcache, since the toolcache shares a filesystem with the directory we extract to, so freeing it helps either way, and report an error other than the toolcache being absent as a failure rather than as an empty toolcache.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
When we download a bundle the toolcache often already holds a different one that the job will not use, and on GitHub-hosted runners it shares a filesystem with the workspace, so it takes space away from the analysis. Empty the toolcache before downloading, which also frees space for the archive during extraction, and which is safe because getting as far as a download means the tools were not resolved from the toolcache. Skip this once a step has obtained the tools, since a later step may run a path it was given, and gate it on the runner being GitHub-hosted and on a feature flag that is off by default.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
`deleteToolcacheBundles` removes `$RUNNER_TOOL_CACHE/CodeQL` and reports which versions were there. It refuses to follow a symlinked CodeQL directory so that it can only ever delete paths that are really inside the toolcache, and reports failures rather than throwing. Not called yet.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
`isHostedRunner` infers hostedness from the runner name and the toolcache path, so it also matches self-hosted runners that are configured to resemble hosted ones. Rename it to `looksLikeHostedRunner` so callers can see they are getting a heuristic, and add `isGitHubHostedRunner`, which reads the `RUNNER_ENVIRONMENT` value the Actions service reports. The existing callers keep the heuristic, so there is no behaviour change.
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
