XL-Zhao-23 commented on issue #13517:
URL: https://github.com/apache/skywalking/issues/13517#issuecomment-3426866368
## Problem Analysis
In the Node.js 24 environment, `npm ls --all --production --parseable`
outputs package paths for all platforms, including both the current platform
and other platforms. However, in the actual filesystem, only packages for the
current platform exist. This causes license verification to attempt to resolve
non-existent cross-platform package paths.
## Proposed Solutions
### Solution 1: Intelligent Platform Filtering
#### Core Concept
Intelligently distinguish and retain only cross-platform packages required
for the current platform by detecting platform identifiers in package paths.
#### Implementation Logic
1. **Cross-platform package identification**: Detect known cross-platform
package patterns in paths (e.g., `@parcel/watcher-`, `@node-rs/`, etc.)
2. **Platform matching verification**: For identified cross-platform
packages, further check if they contain current platform identifiers
3. **Selective retention**:
- If it's a package for the current platform (e.g.,
`@parcel/watcher-linux-x64-glibc` on Linux) → **Keep**
- If it's a package for other platforms (e.g.,
`@parcel/watcher-darwin-arm64` on Linux) → **Skip**
#### Technical Details
- Use `runtime.GOOS` and `runtime.GOARCH` to get current platform information
- Establish platform identifier mapping table (e.g., `linux-x64`,
`darwin-arm64`, `win32-x64`, etc.)
- Perform pattern matching on common cross-platform package prefixes
#### Advantages
- Clear logic, easy to understand and maintain
- Comprehensive coverage, handles various cross-platform package patterns
- Good performance, only requires string matching
#### Potential Challenges
- Need to maintain a pattern library for cross-platform packages
- May miss some unrecognized cross-platform package patterns
### Solution 2: Path Pattern Analysis
#### Core Concept
Analyze path strings from `npm ls` output and use path pattern logic to
determine whether it's an actually installed package.
#### Implementation Logic
1. **Path pattern recognition**: Analyze platform identifier patterns in
path strings
2. **Logical judgment**:
- If it's a cross-platform package path matching current platform →
**Keep**
- If it's a cross-platform package path not matching current platform →
**Skip**
- If it's a regular package path → **Keep**
#### Technical Details
- Pure string operations, no filesystem access required
- Pattern matching based on path naming conventions
- Utilize complete path information already contained in npm output
#### Advantages
- High accuracy, completely based on path pattern logic
- Excellent performance, pure string operations
- No need to maintain complex pattern libraries
- Strong adaptability, handles various path patterns
#### Potential Challenges
- Relies on standardization of npm output path naming
- Needs to correctly handle various path formats
## Solution Comparison
| Aspect | Solution 1 (Intelligent Filtering) | Solution 2 (Path Analysis) |
|--------|-----------------------------------|----------------------------|
| **Accuracy** | High (requires pattern library) | Highest (based on path
logic) |
| **Performance** | High (string matching) | High (pure string operations) |
| **Maintenance Cost** | Medium (needs pattern updates) | Low (based on path
logic) |
| **Adaptability** | Medium (relies on preset patterns) | High (adaptive to
path patterns) |
| **Implementation Complexity** | Low | Low |
## Recommendation
Based on the above analysis, I would tentatively recommend:
### Preferred Approach: Solution 2 (Path Pattern Analysis)
- Performance comparable to Solution 1, both using pure string operations
- Higher accuracy, completely based on path logic judgment
- Lower maintenance cost, no need to maintain complex pattern libraries
- Better adaptability, can handle various unknown path patterns
### Implementation Suggestions
1. **Core logic**: Add path analysis filtering in the `GetInstalledPkgs`
method
2. **Platform detection**: Use `runtime.GOOS` and `runtime.GOARCH` to
identify current platform
3. **Path matching**: Pattern matching based on cross-platform package path
naming conventions
4. **Logging**: Add debug logs for skipped package paths to facilitate
troubleshooting
## Opening for Discussion
**I would like to emphasize that these are just initial thoughts to spark
discussion.** My experience in this specific area is limited, and I'm very
eager to hear better suggestions or alternative approaches from the community.
Some questions I have:
- Are there other cross-platform package patterns we should consider?
- Would a hybrid approach combining both solutions be more robust?
- Are there any edge cases or platform-specific nuances I might have
overlooked?
- Has anyone encountered similar issues and found different solutions?
Thank you for considering these suggestions - I'm looking forward to
learning from your expertise and collaborating on the best approach to solve
this issue!
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