Before, a URL based source might be downloaded multiple times during the
dependency fetching and lockfile creation. This commit tries to avoid
this by:
1) Memoizing data about the archive to avoid re-fetching the archive
2) Adding a CachedFetcher wrapper around the fetcher class to help
ensure that callers always consult the cache before fetching.
Signed-off-by: Steven Danna <steve@chef.io>
If a URL based source does not match the shasum recorded in the
lockfile, it likely means a new version has been pushed to the remote
source. In this case, we fail to help ensure that when using a lockfile
we always run the same code as when the lockfile was created.
Signed-off-by: Steven Danna <steve@chef.io>
This adds a new git fetcher. In doing so, it also refactors how the
fetchers work a bit to better support fetchers that need to resolve
user-provided sources to fully specified sources appropriate for a
lockfile.
Signed-off-by: Steven Danna <steve@chef.io>
This adds a basic prototype of inspec.lock. When the lockfile exists on
disk, the dependencies tree is constructed using the information in the
lock file rather than using the resolver.
Signed-off-by: Steven Danna <steve@chef.io>
