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82 lines
2.3 KiB
82 lines
2.3 KiB
package config
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import (
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"gerrit.wikimedia.org/r/blubber/build"
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)
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// ArtifactsConfig declares files and directories to be copied from one place
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// to another during the build, either from the "local" build context or from
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// another variant.
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//
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// The most common use of the latter such "multi-stage" build is to compile
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// and test the application using one variant image that contains a
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// comprehensive set of development dependencies, and copy the application
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// binaries or production only source files over into a smaller image that
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// contains only production dependencies.
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//
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type ArtifactsConfig struct {
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From string `json:"from" validate:"required,variantref"`
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Source string `json:"source" validate:"requiredwith=destination,relativelocal"`
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Destination string `json:"destination" validate:"requiredwith=source,relativelocal"`
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}
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// Expand returns the longhand configured artifact and/or the default
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// artifacts for any configured by shorthand notation (i.e. on the `From`
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// field).
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//
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func (ac ArtifactsConfig) Expand(appDirectory string) []ArtifactsConfig {
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// check for shorthand configuration and return its expanded form
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if ac.From != "" && ac.Source == "" && ac.Destination == "" {
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if ac.From == LocalArtifactKeyword {
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return []ArtifactsConfig{
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{
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From: ac.From,
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Source: ".",
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Destination: ".",
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},
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}
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}
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return []ArtifactsConfig{
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{
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From: ac.From,
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Source: appDirectory,
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Destination: appDirectory,
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},
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{
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From: ac.From,
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Source: LocalLibPrefix,
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Destination: LocalLibPrefix,
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},
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}
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}
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return []ArtifactsConfig{ac}
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}
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// InstructionsForPhase injects instructions into the given build phase that
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// copy configured artifacts.
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//
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// PhaseInstall
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//
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// In the case of a "local" build context copy, simply return a build.Copy
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// with the configured source and destination. In the case of a variant copy,
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// return a build.CopyFrom instruction for the variant name, source and
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// destination paths.
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//
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func (ac ArtifactsConfig) InstructionsForPhase(phase build.Phase) []build.Instruction {
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switch phase {
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case build.PhaseInstall:
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copy := build.Copy{[]string{ac.Source}, ac.Destination}
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if ac.From == LocalArtifactKeyword {
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return []build.Instruction{copy}
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}
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return []build.Instruction{
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build.CopyFrom{ac.From, copy},
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}
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}
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return []build.Instruction{}
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}
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