chore: Add target filtering

CHANGELOG.md

@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.6.0] - 2026-02-14
+
+### Added
+- Optional `TARGETS` env var to filter output by target name (comma-delimited, supports `*` wildcard globs)
+
 ## [0.5.1] - 2026-02-14
 
 ### Fixed
@@ -78,6 +83,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Multi-stage Docker build
 - Automated vendor upgrade workflow
 
+[0.6.0]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.5.1...v0.6.0
 [0.5.1]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.5.0...v0.5.1
 [0.5.0]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.4.0...v0.5.0
 [0.4.0]: https://github.com/gooddata/gooddata-goodchanges/compare/v0.3.0...v0.4.0

README.md

@@ -49,13 +49,14 @@ JSON array of target objects:
 
 ## Environment variables
 
-| Variable | Description | Default |
-|---|---|---|
-| `LOG_LEVEL` | Logging verbosity. `BASIC` for standard logging, `DEBUG` for verbose AST/taint tracing to stderr | _(no logging)_ |
-| `INCLUDE_TYPES` | When set to any non-empty value, includes type-only changes (interfaces, type aliases, type annotations) in taint propagation | _(disabled)_ |
-| `INCLUDE_CSS` | When set to any non-empty value, enables CSS/SCSS change detection and taint propagation through `@use`/`@import` chains | _(disabled)_ |
-| `COMPARE_COMMIT` | Specific git commit hash to compare against (overrides branch-based comparison) | _(empty)_ |
-| `COMPARE_BRANCH` | Git branch to compute merge base against | `origin/master` |
+| Variable         | Description                                                                                                                   | Default         |
+|------------------|-------------------------------------------------------------------------------------------------------------------------------|-----------------|
+| `LOG_LEVEL`      | Logging verbosity. `BASIC` for standard logging, `DEBUG` for verbose AST/taint tracing to stderr                              | _(no logging)_  |
+| `INCLUDE_TYPES`  | When set to any non-empty value, includes type-only changes (interfaces, type aliases, type annotations) in taint propagation | _(disabled)_    |
+| `INCLUDE_CSS`    | When set to any non-empty value, enables CSS/SCSS change detection and taint propagation through `@use`/`@import` chains      | _(disabled)_    |
+| `COMPARE_COMMIT` | Specific git commit hash to compare against (overrides branch-based comparison)                                               | _(empty)_       |
+| `COMPARE_BRANCH` | Git branch to compute merge base against                                                                                      | `origin/master` |
+| `TARGETS`        | Comma-delimited list of target names to include in output. Supports `*` wildcard (e.g. `*backstop*,@gooddata/sdk-*`).         | _(all targets)_ |
 
 ## Library vs app detection
 
@@ -127,13 +128,13 @@ Each `changeDirs` entry is an object with:
 
 ### Fields reference
 
-| Field | Type | Used by | Description |
-|---|---|---|---|
-| `type` | `"target"` \| `"virtual-target"` | Both | Declares what kind of target this project is |
-| `app` | `string` | Target | Package name of the corresponding app this e2e package tests |
-| `targetName` | `string` | Virtual target | Output name emitted when the virtual target is triggered |
-| `changeDirs` | `ChangeDir[]` | Virtual target | Directories to watch. Each entry: `{"path": "...", "type?": "fine-grained"}` |
-| `ignores` | `string[]` | Both | Glob patterns for files to exclude from change detection |
+| Field        | Type                             | Used by        | Description                                                                  |
+|--------------|----------------------------------|----------------|------------------------------------------------------------------------------|
+| `type`       | `"target"` \| `"virtual-target"` | Both           | Declares what kind of target this project is                                 |
+| `app`        | `string`                         | Target         | Package name of the corresponding app this e2e package tests                 |
+| `targetName` | `string`                         | Virtual target | Output name emitted when the virtual target is triggered                     |
+| `changeDirs` | `ChangeDir[]`                    | Virtual target | Directories to watch. Each entry: `{"path": "...", "type?": "fine-grained"}` |
+| `ignores`    | `string[]`                       | Both           | Glob patterns for files to exclude from change detection                     |
 
 The `.goodchangesrc.json` file itself is always ignored.
 

VERSION

@@ -1 +1 @@
-0.5.1
+0.6.0

main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"regexp"
 	"sort"
 	"strings"
 	"sync"
@@ -364,6 +365,18 @@ func main() {
 		return e2eList[i].Name < e2eList[j].Name
 	})
 
+	// Filter targets if TARGETS env is set (comma-delimited, supports * globs)
+	if targetsEnv := os.Getenv("TARGETS"); targetsEnv != "" {
+		patterns := strings.Split(targetsEnv, ",")
+		var filtered []*TargetResult
+		for _, result := range e2eList {
+			if matchesTargetFilter(result.Name, patterns) {
+				filtered = append(filtered, result)
+			}
+		}
+		e2eList = filtered
+	}
+
 	if flagLog {
 		logf("Affected e2e packages (%d):\n", len(e2eList))
 		for _, result := range e2eList {
@@ -417,3 +430,29 @@ func findLockfileAffectedProjects(config *rush.Config, mergeBase string) map[str
 	}
 	return result
 }
+
+// matchesTargetFilter checks if a target name matches any of the given patterns.
+// Patterns support * as a wildcard matching any characters (including /).
+func matchesTargetFilter(name string, patterns []string) bool {
+	for _, p := range patterns {
+		p = strings.TrimSpace(p)
+		if p == "" {
+			continue
+		}
+		// Convert glob pattern to regex: * -> .*, escape the rest
+		var re strings.Builder
+		re.WriteString("^")
+		for _, ch := range p {
+			if ch == '*' {
+				re.WriteString(".*")
+			} else {
+				re.WriteString(regexp.QuoteMeta(string(ch)))
+			}
+		}
+		re.WriteString("$")
+		if matched, _ := regexp.MatchString(re.String(), name); matched {
+			return true
+		}
+	}
+	return false
+}