Add default version set to minimum support version for tcld (#246)

Author: tminusplus

app/version.go

@@ -8,9 +8,20 @@ import (
 	"time"
 
 	"github.com/urfave/cli/v2"
+	"golang.org/x/mod/semver"
 )
 
 const (
+	// MinSupportedVersion is the minimum tcld version supported by our APIs.
+	// This string must be updated when we deprecate older versions, but should be
+	// done carefully as this will likely break user's current usage of tcld.
+	MinSupportedVersion = "v0.1.3"
+
+	// DefaultVersionString is the version which is sent over if no version was available.
+	// This can happen if a user builds the latest main branch, as the version string provided
+	// to us from Go tooling is `(devel)`
+	DefaultVersionString = MinSupportedVersion + "-no-version-available"
+
 	pseudoVersionMinLen        = len("vX.0.0-yyyymmddhhmmss-abcdefabcdef")
 	pseudoVersionCommitInfoLen = len("yyyymmddhhmmss-abcdefabcdef")
 )
@@ -62,6 +73,10 @@ func NewBuildInfo() BuildInfo {
 	info := BuildInfo{
 		Version: di.Main.Version,
 	}
+	if !semver.IsValid(di.Main.Version) {
+		info.Version = DefaultVersionString
+	}
+
 	if len(di.Main.Version) >= pseudoVersionMinLen {
 		// Used when compiled with `go install`.
 		// See https://go.dev/ref/mod#pseudo-versions for more info on the expected string format

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/urfave/cli/v2 v2.25.3
 	go.uber.org/fx v1.19.2
 	go.uber.org/multierr v1.6.0
-	golang.org/x/mod v0.8.0
+	golang.org/x/mod v0.12.0
 	google.golang.org/grpc v1.54.0
 )
 

go.sum

@@ -69,6 +69,8 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.12.0 h1:rmsUpXtvNzj340zd98LZ4KntptpfRHwpFOHG188oHXc=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=