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cmd: Adjust config load logs/errors (#6032)

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* cmd: Adjust config load logs/errors

* Update cmd/main.go

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>

---------

Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
This commit is contained in:
Francis Lavoie 2024-03-05 14:26:30 -05:00 committed by GitHub
parent 72ce78d9af
commit e473ae6803
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GPG Key ID: B5690EEEBB952194
1 changed files with 27 additions and 14 deletions
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35
cmd/main.go
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@ -17,6 +17,7 @@ package caddycmd
import (
"bufio"
"bytes"
"encoding/json"
"errors"
"flag"
"fmt"
@ -107,6 +108,12 @@ func LoadConfig(configFile, adapterName string) ([]byte, string, error) {
}
func loadConfigWithLogger(logger *zap.Logger, configFile, adapterName string) ([]byte, string, error) {
// if no logger is provided, use a nop logger
// just so we don't have to check for nil
if logger == nil {
logger = zap.NewNop()
}
// specifying an adapter without a config file is ambiguous
if adapterName != "" && configFile == "" {
return nil, "", fmt.Errorf("cannot adapt config without config file (use --config)")
@ -119,16 +126,16 @@ func loadConfigWithLogger(logger *zap.Logger, configFile, adapterName string) ([
if configFile != "" {
if configFile == "-" {
config, err = io.ReadAll(os.Stdin)
if err != nil {
return nil, "", fmt.Errorf("reading config from stdin: %v", err)
}
logger.Info("using config from stdin")
} else {
config, err = os.ReadFile(configFile)
}
if err != nil {
return nil, "", fmt.Errorf("reading config file: %v", err)
return nil, "", fmt.Errorf("reading config from file: %v", err)
}
if logger != nil {
logger.Info("using provided configuration",
zap.String("config_file", configFile),
zap.String("config_adapter", adapterName))
logger.Info("using config from file", zap.String("file", configFile))
}
} else if adapterName == "" {
// if the Caddyfile adapter is plugged in, we can try using an
@ -145,12 +152,10 @@ func loadConfigWithLogger(logger *zap.Logger, configFile, adapterName string) ([
} else {
// success reading default Caddyfile
configFile = "Caddyfile"
if logger != nil {
logger.Info("using adjacent Caddyfile")
}
}
}
}
// as a special case, if a config file called "Caddyfile" was
// specified, and no adapter is specified, assume caddyfile adapter
@ -177,16 +182,24 @@ func loadConfigWithLogger(logger *zap.Logger, configFile, adapterName string) ([
if err != nil {
return nil, "", fmt.Errorf("adapting config using %s: %v", adapterName, err)
}
logger.Info("adapted config to JSON", zap.String("adapter", adapterName))
for _, warn := range warnings {
msg := warn.Message
if warn.Directive != "" {
msg = fmt.Sprintf("%s: %s", warn.Directive, warn.Message)
}
if logger != nil {
logger.Warn(msg, zap.String("adapter", adapterName), zap.String("file", warn.File), zap.Int("line", warn.Line))
}
logger.Warn(msg,
zap.String("adapter", adapterName),
zap.String("file", warn.File),
zap.Int("line", warn.Line))
}
config = adaptedConfig
} else {
// validate that the config is at least valid JSON
err = json.Unmarshal(config, new(any))
if err != nil {
return nil, "", fmt.Errorf("config is not valid JSON: %v; did you mean to use a config adapter (the --adapter flag)?", err)
}
}
return config, configFile, nil