added global configuration system (config.go)

1 files changed, 112 insertions, 0 deletions

diff --git a/config.go b/config.go
new file mode 100644
index 0000000..6d8786f
--- /dev/null
+++ b/config.go
@@ -0,0 +1,112 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"github.com/go-yaml/yaml"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+)
+
+type SCORSHWorker_cfg struct {
+	Name     string   `yaml:"w_name"`
+	Repos    []string `yaml:"w_repos"`
+	Folder   string   `yaml:"w_folder"`
+	Logfile  string   `yaml:"w_logfile"`
+	Tagfile  string   `yaml:"w_tagfile"`
+	Keyrings []string `yaml:"w_keyrings"`
+}
+
+type SCORSHcfg struct {
+	Spooldir  string             `yaml:"s_spooldir"`
+	Logfile   string             `yaml:"s_logfile"`
+	LogPrefix string             `yaml:"s_logprefix"`
+	Workers   []SCORSHWorker_cfg `yaml:"s_workers"`
+}
+
+// Read a configuration from fname or die
+
+func ReadConfig(fname string) *SCORSHcfg {
+
+	data, err := ioutil.ReadFile(fname)
+	if err != nil {
+		log.Fatal("Error while reading file: ", err)
+	}
+
+	var cfg *SCORSHcfg
+	cfg = new(SCORSHcfg)
+
+	// Unmarshal the YAML configuration file into a SCORSHcfg structure
+	err = yaml.Unmarshal(data, cfg)
+	if err != nil {
+		log.Fatal("Error while reading configuration: ", err)
+	}
+
+	fmt.Printf("%s", cfg)
+
+	// If the user has not set a spooldir, crash loudly
+	if cfg.Spooldir == "" {
+		log.Fatal("No spooldir defined in ", fname, ". Exiting\n")
+	}
+
+	// Check if the user has set a custom logprefix
+	if cfg.LogPrefix != "" {
+		log.SetPrefix(cfg.LogPrefix)
+	}
+
+	// Check if the user wants to redirect the logs to a file
+	if cfg.Logfile != "" {
+		f, err := os.Open(cfg.Logfile)
+		if err != nil {
+			log.SetOutput(io.Writer(f))
+		} else {
+			log.Printf("Error opening logfile: \n", err)
+		}
+	}
+
+	// If we got so far, then there is some sort of config in cfg
+	log.Printf("Successfully read config from %s\n", fname)
+
+	return cfg
+
+}
+
+func (cfg *SCORSHcfg) String() string {
+
+	var buff bytes.Buffer
+
+	buff.WriteString("spooldir: ")
+	buff.WriteString(cfg.Spooldir)
+	buff.WriteString("\nlogfile: ")
+	buff.WriteString(cfg.Logfile)
+	buff.WriteString("\nlogprefix: ")
+	buff.WriteString(cfg.LogPrefix)
+	buff.WriteString("\nWorkers: \n")
+
+	for _, w := range cfg.Workers {
+		buff.WriteString("---\n  name: ")
+		buff.WriteString(w.Name)
+		buff.WriteString("\n  repos: ")
+		for _, r := range w.Repos {
+			buff.WriteString("\n    ")
+			buff.WriteString(r)
+		}
+		buff.WriteString("\n  folder: ")
+		buff.WriteString(w.Folder)
+		buff.WriteString("\n  logfile: ")
+		buff.WriteString(w.Logfile)
+		buff.WriteString("\n  tagfile: ")
+		buff.WriteString(w.Tagfile)
+		buff.WriteString("\n  keyrings: ")
+		for _, k := range w.Keyrings {
+			buff.WriteString("\n    ")
+			buff.WriteString(k)
+		}
+		buff.WriteString("\n...\n")
+
+	}
+
+	return buff.String()
+}