From 32ec0adbb05ec197ff1d94a8211658f841c74499 Mon Sep 17 00:00:00 2001 From: Mitchell Hashimoto Date: Wed, 8 May 2013 20:56:44 -0700 Subject: [PATCH] Set PACKER_CONFIG for global config path --- packer.go | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 51 insertions(+), 1 deletion(-) diff --git a/packer.go b/packer.go index 0cd8c9d3a..08d7d8b35 100644 --- a/packer.go +++ b/packer.go @@ -8,9 +8,48 @@ import ( "io/ioutil" "log" "os" + "os/user" + "path" "runtime" ) +func loadGlobalConfig() (result *config, err error) { + mustExist := true + p := os.Getenv("PACKER_CONFIG") + if p == "" { + var u *user.User + u, err = user.Current() + if err != nil { + return + } + + p = path.Join(u.HomeDir, ".packerrc") + mustExist = false + } + + log.Printf("Loading packer config: %s\n", p) + contents, err := ioutil.ReadFile(p) + if err != nil && !mustExist { + // Don't report an error if it is okay if the file is missing + perr, ok := err.(*os.PathError) + if ok && perr.Op == "open" { + log.Printf("Packer config didn't exist. Ignoring: %s\n", p) + err = nil + } + } + + if err != nil { + return + } + + result, err = parseConfig(string(contents)) + if err != nil { + return + } + + return +} + func main() { if os.Getenv("PACKER_LOG") == "" { // If we don't have logging explicitly enabled, then disable it @@ -27,12 +66,23 @@ func main() { defer plugin.CleanupClients() - config, err := parseConfig(defaultConfig) + homeConfig, err := loadGlobalConfig() if err != nil { fmt.Fprintf(os.Stderr, "Error loading global Packer configuration: \n\n%s\n", err) os.Exit(1) } + config, err := parseConfig(defaultConfig) + if err != nil { + fmt.Fprintf(os.Stderr, "Error parsing global Packer configuration: \n\n%s\n", err) + os.Exit(1) + } + + if homeConfig != nil { + log.Println("Merging default config with home config...") + config = mergeConfig(config, homeConfig) + } + envConfig := packer.DefaultEnvironmentConfig() envConfig.Commands = config.CommandNames() envConfig.CommandFunc = config.LoadCommand