packer-cn/checkpoint.go

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package main
import (
"fmt"
"log"
"path/filepath"
"github.com/hashicorp/go-checkpoint"
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"github.com/mitchellh/packer/command"
"github.com/mitchellh/packer/packer"
packerVersion "github.com/mitchellh/packer/version"
)
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func init() {
checkpointResult = make(chan *checkpoint.CheckResponse, 1)
}
var checkpointResult chan *checkpoint.CheckResponse
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// runCheckpoint runs a HashiCorp Checkpoint request. You can read about
// Checkpoint here: https://github.com/hashicorp/go-checkpoint.
func runCheckpoint(c *config) {
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// If the user doesn't want checkpoint at all, then return.
if c.DisableCheckpoint {
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log.Printf("[INFO] Checkpoint disabled. Not running.")
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checkpointResult <- nil
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return
}
configDir, err := packer.ConfigDir()
if err != nil {
log.Printf("[ERR] Checkpoint setup error: %s", err)
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checkpointResult <- nil
return
}
version := packerVersion.Version
if packerVersion.VersionPrerelease != "" {
version += fmt.Sprintf("-%s", packerVersion.VersionPrerelease)
}
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signaturePath := filepath.Join(configDir, "checkpoint_signature")
if c.DisableCheckpointSignature {
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log.Printf("[INFO] Checkpoint signature disabled")
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signaturePath = ""
}
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resp, err := checkpoint.Check(&checkpoint.CheckParams{
Product: "packer",
Version: version,
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SignatureFile: signaturePath,
CacheFile: filepath.Join(configDir, "checkpoint_cache"),
})
if err != nil {
log.Printf("[ERR] Checkpoint error: %s", err)
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resp = nil
}
checkpointResult <- resp
}
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// commandVersionCheck implements command.VersionCheckFunc and is used
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// as the version checker.
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func commandVersionCheck() (command.VersionCheckInfo, error) {
// Wait for the result to come through
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info := <-checkpointResult
if info == nil {
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var zero command.VersionCheckInfo
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return zero, nil
}
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// Build the alerts that we may have received about our version
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alerts := make([]string, len(info.Alerts))
for i, a := range info.Alerts {
alerts[i] = a.Message
}
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return command.VersionCheckInfo{
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Outdated: info.Outdated,
Latest: info.CurrentVersion,
Alerts: alerts,
}, nil
}