88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
// Package client provides ZFS snapshot backup client functionality.
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// It handles creating snapshots and uploading them to a remote server.
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package client
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import (
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"bufio"
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"os"
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"strings"
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)
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// Config holds client-side configuration for connecting to the backup server.
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// Note: Storage type is determined by the server, not the client.
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type Config struct {
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// ClientID is the unique identifier for this client
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ClientID string `json:"client_id"`
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// APIKey is the authentication key for the server
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APIKey string `json:"api_key"`
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// ServerURL is the base URL of the backup server
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ServerURL string `json:"server_url"`
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// LocalDataset is the ZFS dataset to backup
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LocalDataset string `json:"local_dataset"`
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// Compress enables gzip compression for transfers
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Compress bool `json:"compress"`
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}
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// LoadConfig loads client configuration from environment variables and .env file.
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// Environment variables take precedence over .env file values.
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func LoadConfig() *Config {
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// Load .env file if exists
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loadEnvFile(".env")
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return &Config{
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ClientID: getEnv("CLIENT_ID", "client1"),
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APIKey: getEnv("API_KEY", "secret123"),
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ServerURL: getEnv("SERVER_URL", "http://backup-server:8080"),
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LocalDataset: getEnv("LOCAL_DATASET", "tank/data"),
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Compress: getEnv("COMPRESS", "true") == "true",
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}
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}
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// loadEnvFile loads key=value pairs from a .env file.
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// Lines starting with # are treated as comments.
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// Values can be quoted or unquoted.
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func loadEnvFile(filename string) {
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file, err := os.Open(filename)
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if err != nil {
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return // .env file is optional
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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line := strings.TrimSpace(scanner.Text())
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// Skip empty lines and comments
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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// Parse key=value
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parts := strings.SplitN(line, "=", 2)
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if len(parts) != 2 {
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continue
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}
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key := strings.TrimSpace(parts[0])
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value := strings.TrimSpace(parts[1])
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// Remove quotes if present
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if len(value) >= 2 && (value[0] == '"' || value[0] == '\'') {
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value = value[1 : len(value)-1]
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}
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// Only set if not already defined in environment
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if os.Getenv(key) == "" {
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os.Setenv(key, value)
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}
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}
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}
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// getEnv retrieves an environment variable with a default fallback value.
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func getEnv(key, defaultValue string) string {
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if value := os.Getenv(key); value != "" {
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return value
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}
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return defaultValue
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}
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