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cmd/clair: document constants

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This commit is contained in:
Jimmy Zelinskie 2018-09-06 17:40:01 -04:00
parent fffb67f137
commit b20482e0ae
1 changed files with 14 additions and 4 deletions
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18
cmd/clair/main.go
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@ -1,4 +1,4 @@
// Copyright 2017 clair authors // Copyright 2018 clair authors
// //
// Licensed under the Apache License, Version 2.0 (the "License"); // Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License. // you may not use this file except in compliance with the License.
@ -61,7 +61,17 @@ import (
_ "github.com/coreos/clair/ext/vulnsrc/ubuntu" _ "github.com/coreos/clair/ext/vulnsrc/ubuntu"
) )
const maxDBConnectionAttempts = 20 // MaxDBConnectionAttempts is the total number of tries that Clair will use to
// initially connect to a database at start-up.
const MaxDBConnectionAttempts = 20
// BinaryDependencies are the programs that Clair expects to be on the $PATH
// because it creates subprocesses of these programs.
var BinaryDependencies = []string{
"git",
"rpm",
"xz",
}
func waitForSignals(signals ...os.Signal) { func waitForSignals(signals ...os.Signal) {
interrupts := make(chan os.Signal, 1) interrupts := make(chan os.Signal, 1)
@ -136,7 +146,7 @@ func Boot(config *Config) {
// Open database // Open database
var db database.Datastore var db database.Datastore
var dbError error var dbError error
for attempts := 1; attempts <= maxDBConnectionAttempts; attempts++ { for attempts := 1; attempts <= MaxDBConnectionAttempts; attempts++ {
db, dbError = database.Open(config.Database) db, dbError = database.Open(config.Database)
if dbError == nil { if dbError == nil {
break break
@ -180,7 +190,7 @@ func main() {
flag.Parse() flag.Parse()
// Check for dependencies. // Check for dependencies.
for _, bin := range []string{"git", "rpm", "xz"} { for _, bin := range BinaryDependencies {
_, err := exec.LookPath(bin) _, err := exec.LookPath(bin)
if err != nil { if err != nil {
log.WithError(err).WithField("dependency", bin).Fatal("failed to find dependency") log.WithError(err).WithField("dependency", bin).Fatal("failed to find dependency")