Default registry #358
Default registry #358
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…s and ensure thread safety
Summary of ChangesHello @ilopezluna, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request streamlines how registry configurations are managed throughout the codebase by introducing a single, environment-variable-driven function. This change significantly improves flexibility, especially for development and testing environments, by simplifying the process of switching default registries and handling insecure connections, thereby reducing boilerplate and potential inconsistencies. Highlights
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Hey there - I've reviewed your changes and they look great!
Prompt for AI Agents
Please address the comments from this code review:
## Individual Comments
### Comment 1
<location> `pkg/distribution/registry/client.go:32-38` </location>
<code_context>
+// Returns a copy of the options to prevent race conditions from slice modifications.
+// - DEFAULT_REGISTRY: Override the default registry (index.docker.io)
+// - INSECURE_REGISTRY: Set to "true" to allow HTTP connections
+func GetDefaultRegistryOptions() []name.Option {
+ once.Do(func() {
+ var opts []name.Option
</code_context>
<issue_to_address>
**suggestion:** Consider thread-safety of environment variable usage in GetDefaultRegistryOptions.
If environment variables are expected to change at runtime, this implementation will not pick up those changes after the initial call. Consider documenting this behavior for clarity.
```suggestion
/*
GetDefaultRegistryOptions returns a name.Option slice with custom default registry
and insecure flag if the corresponding environment variables are set.
Environment variables are read only once, on the first call, and cached for consistency.
Subsequent changes to DEFAULT_REGISTRY or INSECURE_REGISTRY at runtime will NOT be picked up
until process restart. This is intentional for thread-safety and performance.
Returns a copy of the options to prevent race conditions from slice modifications.
- DEFAULT_REGISTRY: Override the default registry (index.docker.io)
- INSECURE_REGISTRY: Set to "true" to allow HTTP connections
*/
func GetDefaultRegistryOptions() []name.Option {
```
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Code Review
This pull request introduces a centralized helper function, GetDefaultRegistryOptions, to manage custom OCI registry configurations through environment variables. This is a good approach to standardize registry options across the codebase. The changes are consistently applied in all relevant files. My main feedback is the lack of unit tests for the new GetDefaultRegistryOptions function, which is crucial for ensuring its correctness and preventing future regressions. I've added a comment with details on how to add these tests.
# Conflicts: # cmd/cli/commands/package.go # cmd/cli/commands/tag.go
This pull request introduces a way to handle custom registry options throughout the codebase by adding a centralized helper function for registry configuration.
This change will facilitate further integration testing, as it allows us to use a local OCI registry as the default one without needing to configure TLS.