Handle events

- Adds interfaces for developers to build handlers that update data in
response to log events
- Resolves #29

pkg/config/config.go

@@ -1,79 +1,6 @@
 package config
 
-import (
-	"os"
-
-	"fmt"
-
-	"path/filepath"
-
-	"path"
-	"runtime"
-
-	"errors"
-
-	"net/url"
-
-	"github.com/BurntSushi/toml"
-)
-
 type Config struct {
 	Database Database
 	Client   Client
 }
-
-var NewErrConfigFileNotFound = func(environment string) error {
-	return errors.New(fmt.Sprintf("No configuration found for environment: %v", environment))
-}
-
-var NewErrBadConnectionString = func(connectionString string) error {
-	return errors.New(fmt.Sprintf("connection string is invalid: %v", connectionString))
-}
-
-func NewConfig(environment string) (Config, error) {
-	filenameWithExtension := fmt.Sprintf("%s.toml", environment)
-	absolutePath := filepath.Join(ProjectRoot(), "environments", filenameWithExtension)
-	config, err := parseConfigFile(absolutePath)
-	if err != nil {
-		return Config{}, NewErrConfigFileNotFound(environment)
-	} else {
-		if !filepath.IsAbs(config.Client.IPCPath) && !isUrl(config.Client.IPCPath) {
-			config.Client.IPCPath = filepath.Join(ProjectRoot(), config.Client.IPCPath)
-		}
-		return config, nil
-	}
-}
-
-func ProjectRoot() string {
-	var _, filename, _, _ = runtime.Caller(0)
-	return path.Join(path.Dir(filename), "..", "..")
-}
-
-func isUrl(s string) bool {
-	_, err := url.ParseRequestURI(s)
-	if err == nil {
-		return true
-	}
-	return false
-}
-
-func fileExists(s string) bool {
-	_, err := os.Stat(s)
-	if err == nil {
-		return true
-	}
-	return false
-}
-
-func parseConfigFile(filePath string) (Config, error) {
-	var cfg Config
-	if !isUrl(filePath) && !fileExists(filePath) {
-		return Config{}, NewErrBadConnectionString(filePath)
-	} else {
-		_, err := toml.DecodeFile(filePath, &cfg)
-		if err != nil {
-			return Config{}, err
-		}
-		return cfg, nil
-	}
-}