private/version: minimal fix for tag-release.sh

Previous split to a storj.io/private repository broke tag-release.sh
script. This is the minimal temporary fix to make things work.

This links the build information to specified variables and sets them
inline. This approach, of course, is very fragile.

Change-Id: I73db2305e6c304146e5a14b13f1d917881a7455c

cmd/certificates/main.go

@@ -14,6 +14,7 @@ import (
 	"storj.io/storj/certificate"
 	"storj.io/storj/certificate/authorization"
 	"storj.io/storj/pkg/revocation"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 )
 
 var (

cmd/identity/main.go

@@ -25,6 +25,7 @@ import (
 	"storj.io/private/version"
 	"storj.io/storj/certificate/certificateclient"
 	"storj.io/storj/pkg/revocation"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/storj/private/version/checker"
 )
 

cmd/inspector/main.go

@@ -23,6 +23,7 @@ import (
 	"storj.io/common/storj"
 	"storj.io/private/process"
 	"storj.io/storj/private/prompt"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/uplink/private/eestream"
 )
 

cmd/satellite/main.go

@@ -26,6 +26,7 @@ import (
 	"storj.io/storj/cmd/satellite/reports"
 	"storj.io/storj/pkg/cache"
 	"storj.io/storj/pkg/revocation"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/storj/satellite"
 	"storj.io/storj/satellite/accounting/live"
 	"storj.io/storj/satellite/compensation"

cmd/segment-reaper/main.go

@@ -7,6 +7,7 @@ import (
 	"github.com/spf13/cobra"
 
 	"storj.io/private/process"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 )
 
 var (

cmd/storagenode-updater/main.go

@@ -34,6 +34,7 @@ import (
 	"storj.io/private/cfgstruct"
 	"storj.io/private/process"
 	"storj.io/private/version"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/storj/private/version/checker"
 )
 

cmd/storagenode/main.go

@@ -22,6 +22,7 @@ import (
 	"storj.io/private/process"
 	"storj.io/private/version"
 	"storj.io/storj/pkg/revocation"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/storj/storagenode"
 	"storj.io/storj/storagenode/storagenodedb"
 )

cmd/uplink/main.go

@@ -9,6 +9,7 @@ import (
 
 	"storj.io/private/process"
 	"storj.io/storj/cmd/uplink/cmd"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 )
 
 func main() {

cmd/versioncontrol/main.go

@@ -14,6 +14,7 @@ import (
 	"storj.io/common/fpath"
 	"storj.io/private/cfgstruct"
 	"storj.io/private/process"
+	_ "storj.io/storj/private/version" // This attaches version information during release builds.
 	"storj.io/storj/versioncontrol"
 )
 

private/version/release.go

@@ -0,0 +1,23 @@
+// Copyright (C) 2020 Storj Labs, Inc.
+// See LICENSE for copying information.
+
+package version
+
+import _ "unsafe" // needed for go:linkname
+
+//go:linkname buildTimestamp storj.io/private/version.buildTimestamp
+var buildTimestamp string
+
+//go:linkname buildCommitHash storj.io/private/version.buildCommitHash
+var buildCommitHash string
+
+//go:linkname buildVersion storj.io/private/version.buildVersion
+var buildVersion string
+
+//go:linkname buildRelease storj.io/private/version.buildRelease
+var buildRelease string
+
+// ensure that linter understands that the variables are being used.
+func init() { use(buildTimestamp, buildCommitHash, buildVersion, buildRelease) }
+
+func use(...interface{}) {}

scripts/tag-release.sh

@@ -35,17 +35,29 @@ TIMESTAMP=$(date +%s)
 COMMIT=$(git rev-parse HEAD)
 
 cat > ./private/version/release.go <<EOF
-// Copyright (C) 2019 Storj Labs, Inc.
+// Copyright (C) 2020 Storj Labs, Inc.
 // See LICENSE for copying information.
 
 package version
 
-func init() {
-  buildTimestamp = "$TIMESTAMP"
-  buildCommitHash = "$COMMIT"
-  buildVersion = "$VERSION"
-  buildRelease = "true"
-}
+import _ "unsafe" // needed for go:linkname
+
+//go:linkname buildTimestamp storj.io/private/version.buildTimestamp
+var buildTimestamp string = "$TIMESTAMP"
+
+//go:linkname buildCommitHash storj.io/private/version.buildCommitHash
+var buildCommitHash string = "$COMMIT"
+
+//go:linkname buildVersion storj.io/private/version.buildVersion
+var buildVersion string = "$VERSION"
+
+//go:linkname buildRelease storj.io/private/version.buildRelease
+var buildRelease string = "true"
+
+// ensure that linter understands that the variables are being used.
+func init() { use(buildTimestamp, buildCommitHash, buildVersion, buildRelease) }
+
+func use(...interface{}) {}
 EOF
 
 gofmt -w -s ./private/version/release.go