jschoubben
19c1d35939
mesh/delivery superseded: a newer head of the same pull request
mesh/check failed: the composition: the manifest of pacman cannot be read: this manifest cannot be used: | 19c1d35939bc on 8c6e18e82286 | unit 4799 ru…
65 lines
2.2 KiB
Go
65 lines
2.2 KiB
Go
// Package sdkversion says which mesh-sdk version a program was built with (novox/hq ADR 0446 clause 4: a composition
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// check names its mesh-sdk version, so the controller and the assigner can be compared; ADR 0453 clause 1).
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//
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// The version is read from the build info, never kept by hand: a constant nobody bumps would report two different
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// SDKs as one. A program that imports the SDK reports the module's pinned (pseudo-)version, or its replacement's;
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// the SDK's own binaries and tests report "(devel)" with the stamped vcs.revision.
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package sdkversion
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import (
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"runtime/debug"
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)
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// Module is the SDK's Go module path.
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const Module = "git.novox.be/novox/mesh-sdk/go"
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// Version is the mesh-sdk version this binary was built with: "unknown" when the build carries no build info.
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func Version() string {
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bi, ok := debug.ReadBuildInfo()
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if !ok {
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return "unknown"
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}
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return FromBuildInfo(bi)
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}
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// FromBuildInfo reads the SDK's version out of a build info. A dependency replaced by another module version is that
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// version; replaced by a local path it is the path, never empty. When the SDK is the main module it is "(devel)",
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// followed by a space and the vcs.revision when the build stamped one. An SDK command built from another module that
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// requires the SDK (`go build git.novox.be/novox/mesh-sdk/go/cmd/mesh-compose` in a reader's tree, as mesh-build-go's
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// compose job builds it: novox/hq ADR 0482 clause 5) has the SDK as its main module at the version that module pins,
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// read from the module cache with no vcs stamp: it is that version, never a bare "(devel)" that names no SDK. Without
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// the SDK in the build it is "unknown".
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func FromBuildInfo(bi *debug.BuildInfo) string {
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if bi == nil {
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return "unknown"
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}
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if bi.Main.Path == Module {
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for _, s := range bi.Settings {
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if s.Key == "vcs.revision" && s.Value != "" {
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return "(devel) " + s.Value
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}
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}
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if v := bi.Main.Version; v != "" && v != "(devel)" {
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return v
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}
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return "(devel)"
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}
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for _, d := range bi.Deps {
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if d == nil || d.Path != Module {
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continue
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}
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if r := d.Replace; r != nil {
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if r.Version != "" {
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return r.Version
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}
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if r.Path != "" {
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return r.Path
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}
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}
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if d.Version != "" {
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return d.Version
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}
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}
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return "unknown"
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}
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