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/*
test.go is a program that asserts the Gazelle YAML manifest is up-to-date in
regards to the requirements.txt.
It re-hashes the requirements.txt and compares it to the recorded one in the
existing generated Gazelle manifest.
*/
package main
import (
"flag"
"log"
"os"
"path/filepath"
"github.com/bazelbuild/rules_python/gazelle/manifest"
)
func main() {
var manifestGeneratorHashPath string
var requirementsPath string
var manifestPath string
flag.StringVar(
&manifestGeneratorHashPath,
"manifest-generator-hash",
"",
"The file containing the hash for the source code of the manifest generator."+
"This is important to force manifest updates when the generator logic changes.")
flag.StringVar(
&requirementsPath,
"requirements",
"",
"The requirements.txt file.")
flag.StringVar(
&manifestPath,
"manifest",
"",
"The manifest YAML file.")
flag.Parse()
if requirementsPath == "" {
log.Fatalln("ERROR: --requirements must be set")
}
if manifestPath == "" {
log.Fatalln("ERROR: --manifest must be set")
}
manifestFile := new(manifest.File)
if err := manifestFile.Decode(manifestPath); err != nil {
log.Fatalf("ERROR: %v\n", err)
}
if manifestFile.Integrity == "" {
log.Fatalln("ERROR: failed to find the Gazelle manifest file integrity")
}
manifestGeneratorHash, err := os.Open(manifestGeneratorHashPath)
if err != nil {
log.Fatalf("ERROR: %v\n", err)
}
defer manifestGeneratorHash.Close()
requirements, err := os.Open(requirementsPath)
if err != nil {
log.Fatalf("ERROR: %v\n", err)
}
defer requirements.Close()
valid, err := manifestFile.VerifyIntegrity(manifestGeneratorHash, requirements)
if err != nil {
log.Fatalf("ERROR: %v\n", err)
}
if !valid {
manifestRealpath, err := filepath.EvalSymlinks(manifestPath)
if err != nil {
log.Fatalf("ERROR: %v\n", err)
}
log.Fatalf(
"ERROR: %q is out-of-date, follow the intructions on this file for updating.\n",
manifestRealpath)
}
}
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