Implement phase 1 foundations

internal/config/config.go

@@ -0,0 +1,83 @@
+package config
+
+import (
+	"os"
+	"strconv"
+	"time"
+)
+
+type Config struct {
+	Addr             string
+	DataPath         string
+	PollInterval     time.Duration
+	LokiURL          string
+	LokiTenantID     string
+	LokiUsername     string
+	LokiPassword     string
+	DryRunActions    bool
+	AnalysisProvider string
+	AnalysisEndpoint string
+	AnalysisToken    string
+	OllamaURL        string
+	OllamaModel      string
+	AuthUsername     string
+	AuthPassword     string
+}
+
+func Load() Config {
+	return Config{
+		Addr:             env("LOG_GUARDIAN_ADDR", ":8080"),
+		DataPath:         env("LOG_GUARDIAN_DATA_PATH", "/data/config.json"),
+		PollInterval:     durationEnv("LOG_GUARDIAN_POLL_INTERVAL", 1*time.Minute),
+		LokiURL:          trimRightSlash(env("LOKI_URL", "http://loki:3100")),
+		LokiTenantID:     env("LOKI_TENANT_ID", ""),
+		LokiUsername:     env("LOKI_USERNAME", ""),
+		LokiPassword:     env("LOKI_PASSWORD", ""),
+		DryRunActions:    boolEnv("LOG_GUARDIAN_DRY_RUN_ACTIONS", true),
+		AnalysisProvider: env("LOG_GUARDIAN_ANALYSIS_PROVIDER", "none"),
+		AnalysisEndpoint: env("LOG_GUARDIAN_ANALYSIS_ENDPOINT", ""),
+		AnalysisToken:    env("LOG_GUARDIAN_ANALYSIS_TOKEN", ""),
+		OllamaURL:        trimRightSlash(env("LOG_GUARDIAN_OLLAMA_URL", "http://ollama:11434")),
+		OllamaModel:      env("LOG_GUARDIAN_OLLAMA_MODEL", "llama3.1"),
+		AuthUsername:     env("LOG_GUARDIAN_AUTH_USERNAME", ""),
+		AuthPassword:     env("LOG_GUARDIAN_AUTH_PASSWORD", ""),
+	}
+}
+
+func env(key, fallback string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return fallback
+}
+
+func boolEnv(key string, fallback bool) bool {
+	value := os.Getenv(key)
+	if value == "" {
+		return fallback
+	}
+	parsed, err := strconv.ParseBool(value)
+	if err != nil {
+		return fallback
+	}
+	return parsed
+}
+
+func durationEnv(key string, fallback time.Duration) time.Duration {
+	value := os.Getenv(key)
+	if value == "" {
+		return fallback
+	}
+	parsed, err := time.ParseDuration(value)
+	if err != nil {
+		return fallback
+	}
+	return parsed
+}
+
+func trimRightSlash(value string) string {
+	for len(value) > 1 && value[len(value)-1] == '/' {
+		value = value[:len(value)-1]
+	}
+	return value
+}