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feat: add ability to find required ncs paths (#44)
* feat: add ability to find required ncs paths User can provide a base ncs path, and application will go through config file and fetch necessary version. Also adds option to skip env setup, if current one is already prepared by using NO_SETUP_ENV env variable. * fix: update pin in example config
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package config | ||
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "log" | ||
| "os" | ||
| "path" | ||
| "slices" | ||
|
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| "golang.org/x/exp/maps" | ||
| ) | ||
|
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| type NCSLocation struct { | ||
| Version string | ||
| NCS string | ||
| Zephyr string | ||
| } | ||
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| type toolchainItem struct { | ||
| Identifier struct { | ||
| BundleID string `json:"bundle_id"` | ||
| } `json:"identifier"` | ||
| NCSVersions []string `json:"ncs_versions"` | ||
| } | ||
|
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| type toolchainTopLevelItem struct { | ||
| DefaultToolchain map[string]string `json:"default_toolchain"` | ||
| Toolchains []toolchainItem `json:"toolchains"` | ||
| } | ||
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| // FindNCSLocation will return paths for NCS and Zephyr toolchains. | ||
| // | ||
| // If toolchain of required version was not found - it will try to | ||
| // use default version from toolchain file, and if it is not present - | ||
| // latest available in list of toolchains. | ||
| // | ||
| // As such this function can return different toolchain version that | ||
| // was requested, and caller can check it by comparing to version | ||
| // returned in NCSLocation. | ||
| func FindNCSLocation(ncsBase, version string) (NCSLocation, error) { | ||
| toolchainsJson := toolchainConfigPath(ncsBase) | ||
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| configFile, err := os.Open(toolchainsJson) | ||
| if err != nil { | ||
| return NCSLocation{}, fmt.Errorf("open toolchains.json file at %q: %w", toolchainsJson, err) | ||
| } | ||
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| var toolchainFile []toolchainTopLevelItem | ||
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| err = json.NewDecoder(configFile).Decode(&toolchainFile) | ||
| if err != nil { | ||
| return NCSLocation{}, fmt.Errorf("decode toolchain file: %w", err) | ||
| } | ||
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| if len(toolchainFile) == 0 { | ||
| return NCSLocation{}, fmt.Errorf("toolchain file does not contain definitions") | ||
| } | ||
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| first := toolchainFile[0] | ||
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| return providePaths(ncsBase, version, first) | ||
| } | ||
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| func providePaths(ncsBase, version string, toolchainItem toolchainTopLevelItem) (NCSLocation, error) { | ||
| versionToIdentifier := mapVersions(toolchainItem) | ||
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| availableVersions := maps.Keys(versionToIdentifier) | ||
| if len(availableVersions) == 0 { | ||
| return NCSLocation{}, fmt.Errorf("no toolchain versions found in toolchain configuration path %q", toolchainConfigPath(ncsBase)) | ||
| } | ||
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| log.Printf("available toolchain versions: %v", availableVersions) | ||
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| bundleID := versionToIdentifier[version] | ||
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| if bundleID == "" { | ||
| version = toolchainItem.DefaultToolchain["ncs_version"] | ||
| bundleID = versionToIdentifier[version] | ||
| } | ||
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| if bundleID == "" { | ||
| log.Println("toolchain config does not provide default version, and required version was not found, falling back to latest version in config") | ||
|
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| slices.Sort(availableVersions) | ||
| version = availableVersions[len(availableVersions)-1] | ||
|
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| bundleID = versionToIdentifier[version] | ||
| } | ||
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| return constructPaths(ncsBase, version, bundleID), nil | ||
| } | ||
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| func mapVersions(toolchainItem toolchainTopLevelItem) map[string]string { | ||
| mapped := make(map[string]string, len(toolchainItem.Toolchains)) | ||
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| for _, toolchain := range toolchainItem.Toolchains { | ||
| mapped[toolchain.NCSVersions[0]] = toolchain.Identifier.BundleID | ||
| } | ||
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| return mapped | ||
| } | ||
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| func constructPaths(ncsBase, version, bundleID string) NCSLocation { | ||
| return NCSLocation{ | ||
| Version: version, | ||
| NCS: path.Join(ncsBase, "toolchains", bundleID), | ||
| Zephyr: path.Join(ncsBase, version, "zephyr"), | ||
| } | ||
| } | ||
|
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| func toolchainConfigPath(ncsBase string) string { | ||
| return path.Join(ncsBase, "toolchains", "toolchains.json") | ||
| } |
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