Implementation Complete ✅

This PR successfully implements the missing --header and --metadata flags for the micro call command.

Summary of Changes

Problem: Documentation showed TODO comment at cmd/micro/cli/util/dynamic.go:144 indicating --header and --metadata flags should be implemented but weren't.

Solution: Implemented full support for both flags in both call modes (direct and dynamic).

Files Changed

1. cmd/micro/cli/cli.go

   • Added --header and --metadata flags to the call command
   • Apply metadata to context before making RPC calls
   • Added clarifying comments for direct call path

2. cmd/micro/cli/util/dynamic.go

   • Added AddMetadataToContext helper function to parse and apply metadata
   • Updated CallService to extract and apply metadata/header flags
   • Added clarifying comments for dynamic call path
   • Removed TODO comment (now implemented)

3. cmd/micro/cli/util/dynamic_test.go

   • Added comprehensive test suite for AddMetadataToContext
   • Tests cover: single/multiple values, whitespace handling, colon-in-value, invalid formats

4. Code formatting applied to ensure consistency

Usage Examples

# Authentication
micro call service endpoint '{"data":"value"}' --header 'Authorization:Bearer token'

# Request tracing
micro call service endpoint '{}' --metadata 'trace-id:123' --metadata 'user-id:456'

# Dynamic calls
micro service method --name="value" --header 'X-Custom:Value'

Testing & Validation

✅ All unit tests pass (including new metadata tests)
✅ CLI builds successfully
✅ Flags appear in --help output
✅ CodeQL security scan passes (0 alerts)
✅ Code review passes with no issues
✅ Code formatting applied

Architecture

Two code paths both properly handle metadata:

• Direct: micro call service endpoint json → cli.go applies metadata
• Dynamic: micro service method --flags → CallService applies metadata

Both paths are necessary and documented with comments.

Verification of Other Commands

During this work, I also verified that other documented commands are implemented:

• ✅ micro status - implemented in cmd/micro/cli/remote/remote.go
• ✅ micro logs - implemented in cmd/micro/cli/remote/remote.go
• ✅ micro stop - implemented in cmd/micro/cli/remote/remote.go
• ✅ micro deploy - implemented in cmd/micro/cli/deploy/deploy.go
• ✅ micro init - implemented in cmd/micro/cli/init/init.go
• ✅ micro build - implemented in cmd/micro/cli/build/build.go

All documented features are now fully implemented! 🎉

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