version: update version check to use safe introspection tool

Previously, we would query `crdb_internal.node_build_info` table to get
a cluster's version info. Starting at 26.1, we'll be blocking access to
crdb_internal tables, as they're considered part of the "unsafe
internals". To mitigate this issue before release, we'll use instead
`SHOW crdb_version` to collect version information about the cluster.

Fixes: #154660
Release note: none

Author: angles-n-daemons

.github/workflows/golangci-lint.yml

@@ -18,9 +18,9 @@ jobs:
     steps:
       - uses: actions/checkout@v3
         with:
-          go-version: 1.17
+          go-version: 1.24
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
           # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
-          version: v1.46.2
+          version: latest

testing/main_test.go

@@ -112,9 +112,7 @@ func startServerWithApplication(
 func getVersionFromDB(t *testing.T, db *sql.DB) *version.Version {
 	t.Helper()
 	var crdbVersion string
-	if err := db.QueryRow(
-		`SELECT value FROM crdb_internal.node_build_info where field = 'Version'`,
-	).Scan(&crdbVersion); err != nil {
+	if err := db.QueryRow("SHOW crdb_version").Scan(&crdbVersion); err != nil {
 		t.Fatal(err)
 	}
 	v, err := version.Parse(crdbVersion)

version/version.go

@@ -73,22 +73,23 @@ func (v Version) String() string {
 // of the form "vMAJOR.MINOR.PATCH[-PRERELEASE][+METADATA]". This
 // conforms to https://semver.org/spec/v2.0.0.html
 var versionRE = regexp.MustCompile(
-	`^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-[0-9A-Za-z-.]+)?(\+[0-9A-Za-z-.]+|)?$`,
+	`v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-[0-9A-Za-z-.]+)?(\+[0-9A-Za-z-.]+|)?`,
 	// ^major           ^minor           ^patch         ^preRelease       ^metadata
 )
 
 // numericRE is the regexp used to check if an identifier is numeric.
 var numericRE = regexp.MustCompile(`^(0|[1-9][0-9]*)$`)
 
-// Parse creates a version from a string. The string must be a valid semantic
+// Parse creates a version from a string. The string must contain a valid semantic
 // version (as per https://semver.org/spec/v2.0.0.html) in the format:
 //   "vMINOR.MAJOR.PATCH[-PRERELEASE][+METADATA]".
 // MINOR, MAJOR, and PATCH are numeric values (without any leading 0s).
 // PRERELEASE and METADATA can contain ASCII characters and digits, hyphens and
 // dots.
-func Parse(str string) (*Version, error) {
-	if !versionRE.MatchString(str) {
-		return nil, errors.Errorf("invalid version string '%s'", str)
+func Parse(fullStr string) (*Version, error) {
+	var str string
+	if str = versionRE.FindString(fullStr); len(str) == 0 {
+		return nil, errors.Errorf("invalid version string '%s'", fullStr)
 	}
 
 	var v Version