Merge pull request #9 from kumada626/enable_channel_option

fix: Install from the specified release channel

Author: tkyi

README.md

@@ -1 +1,64 @@
-# sd-step
+# sd-step
+[![Build Status][build-image]][build-url]
+[![Latest Release][version-image]][version-url]
+[![Go Report Card][goreport-image]][goreport-url]
+
+> Wrapper command of habitat for Screwdriver
+
+## Usage
+
+```bash
+$ go get github.com/screwdriver-cd/sd-step
+$ cd $GOPATH/src/github.com/screwdriver-cd/sd-step
+$ go build -a -o sd-step
+$ ./sd-step --help
+NAME:
+   sd-step - wrapper command of habitat for Screwdriver
+
+USAGE:
+   sd-step command arguments [options]
+
+VERSION:
+   0.0.0
+
+COMMANDS:
+     exec     Install and exec habitat package with pkg_name and command...
+     help, h  Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --pkg-version value  Package version which also accepts semver expression
+   --hab-channel value  Install from the specified release channel (default: "stable")
+   --help, -h           show help
+   --version, -v        print the version
+
+COPYRIGHT:
+   (c) 2017 Yahoo Inc.
+$ ./sd-step exec core/node "node -v"
+v8.9.0
+$ ./sd-step exec --pkg-version "~6.11.0" core/node "node -v"
+v6.11.5
+$ ./sd-step exec --pkg-version "^6.0.0" core/node "node -v"
+v6.11.5
+$ ./sd-step exec --pkg-version "4.2.6" core/node "node -v"
+v4.2.6
+$ ./sd-step exec --pkg-version "~6.9.0" --hab-channel "unstable" core/node "node -v"
+v6.9.5
+```
+
+## Testing
+
+```bash
+$ go get github.com/screwdriver-cd/sd-step
+$ go test -cover github.com/screwdriver-cd/sd-step/...
+```
+
+## License
+
+Code licensed under the BSD 3-Clause license. See LICENSE file for terms.
+
+[version-image]: https://img.shields.io/github/tag/screwdriver-cd/sd-step.svg
+[version-url]: https://github.com/screwdriver-cd/sd-step/releases
+[build-image]: https://cd.screwdriver.cd/pipelines/150/badge
+[build-url]: https://cd.screwdriver.cd/pipelines/150
+[goreport-image]: https://goreportcard.com/badge/github.com/Screwdriver-cd/sd-step
+[goreport-url]: https://goreportcard.com/report/github.com/Screwdriver-cd/sd-step

hab/hab.go

@@ -18,15 +18,16 @@ type PackagesInfo struct {
 
 // PackageInfo is package info in pkgs response
 type PackageInfo struct {
-	Origin  string `json:"origin"`
-	Name    string `json:"name"`
-	Version string `json:"version"`
-	Release string `json:"release"`
+	Origin   string   `json:"origin"`
+	Name     string   `json:"name"`
+	Version  string   `json:"version"`
+	Release  string   `json:"release"`
+	Channels []string `json:"channels"`
 }
 
 // Depot for hab
 type Depot interface {
-	PackageVersionsFromName(pkgName string) ([]string, error)
+	PackageVersionsFromName(pkgName string, habChannel string) ([]string, error)
 }
 
 type depot struct {
@@ -67,7 +68,7 @@ func (depo *depot) packagesInfo(pkgName string, from int) (PackagesInfo, error)
 }
 
 // PackageVersionsFromName fetch all versions from depot
-func (depo *depot) PackageVersionsFromName(pkgName string) ([]string, error) {
+func (depo *depot) PackageVersionsFromName(pkgName string, habChannel string) ([]string, error) {
 	var packages []PackageInfo
 
 	offset := 0
@@ -93,8 +94,13 @@ func (depo *depot) PackageVersionsFromName(pkgName string) ([]string, error) {
 		if foundVersions[pkg.Version] {
 			continue
 		}
-		versions = append(versions, pkg.Version)
-		foundVersions[pkg.Version] = true
+		for _, channel := range pkg.Channels {
+			if channel == habChannel {
+				versions = append(versions, pkg.Version)
+				foundVersions[pkg.Version] = true
+				break
+			}
+		}
 	}
 
 	return versions, nil