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// Package main provides the command line interface.
//
package main
import (
"fmt"
"log"
"os"
"github.com/pborman/getopt/v2"
"gerrit.wikimedia.org/r/blubber/config"
"gerrit.wikimedia.org/r/blubber/docker"
"gerrit.wikimedia.org/r/blubber/meta"
)
const parameters = "config.yaml variant"
var (
showHelp *bool = getopt.BoolLong("help", 'h', "show help/usage")
showVersion *bool = getopt.BoolLong("version", 'v', "show version information")
policyURI *string = getopt.StringLong("policy", 'p', "", "policy file URI", "uri")
)
func main() {
getopt.SetParameters(parameters)
getopt.Parse()
if *showHelp {
getopt.Usage()
os.Exit(1)
}
if *showVersion {
fmt.Println(meta.FullVersion())
os.Exit(0)
}
args := getopt.Args()
if len(args) < 2 {
getopt.Usage()
os.Exit(1)
}
cfgPath, variant := args[0], args[1]
cfg, err := config.ReadConfigFile(cfgPath)
if err != nil {
if config.IsValidationError(err) {
log.Printf("%s is invalid:\n%v", cfgPath, config.HumanizeValidationError(err))
os.Exit(4)
} else {
log.Printf("Error reading %s: %v\n", cfgPath, err)
os.Exit(2)
}
}
if *policyURI != "" {
policy, err := config.ReadPolicyFromURI(*policyURI)
if err != nil {
log.Printf("Error loading policy from %s: %v\n", *policyURI, err)
os.Exit(5)
}
err = policy.Validate(*cfg)
if err != nil {
log.Printf("Configuration fails policy check against:\npolicy: %s\nviolation: %v\n", *policyURI, err)
os.Exit(6)
}
}
dockerFile, err := docker.Compile(cfg, variant)
if err != nil {
log.Printf("Error compiling config: %v\n", err)
os.Exit(3)
}
dockerFile.WriteTo(os.Stdout)
}
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