Common operations of go configuration management framework viper

Official website address:

GitHub - spf13/viper: Go configuration with fangs

Common operations:

Viper will follow the following priority. Each project has a higher priority than the following items:

Show callSetSet value
Command line parameters (flag)
Environment variables
Configuration File
key/value storage
default value

Configuration File (In the current directory)

host: "0.0.0.0"
mysql:
  host: "127.0.0.1"
  port: 3306
cache:
  cache1:
    max-items: 100
    item-size: 64
  cache2:
    max-items: 200
    item-size: 80

Configuration

("", "localhost:6379")
	// ("./") // Configuration file path, this line has the same effect as the following two lines	("config") // Configuration file name	("yaml")   // Configuration file type	("./")     // Configuration file path	err := ()   // Find and read configuration files	if err != nil {
		panic(("fatal error config file: %w", err)) // Handle errors	}

Get value from Viper

In Viper, there are several ways to get values based on the type of values. The following functions and methods exist:

Get(key string) : interface{}
GetBool(key string) : bool
GetFloat64(key string) : float64
GetInt(key string) : int
GetIntSlice(key string) : []int
GetString(key string) : string
GetStringMap(key string) : map[string]interface{}
GetStringMapString(key string) : map[string]string
GetStringSlice(key string) : []string
GetTime(key string) :
GetDuration(key string) :
IsSet(key string) : bool
AllSettings() : map[string]interface{}

Delimited paths by passing in.

// Viper can access nested fields through incoming .delimited paths:	mysqlHost := ("") // Access mysql's host field	("Mysql Host:", mysqlHost)
	mysqlPort := ("") // Access mysql port field	("Mysql Port:", mysqlPort)

Extract subtree

// Extract subtree	appConfig := ("app")                       // Extract app subtree	("App Config:", ()) // Print all settings of the app subtree	cache1 := ("cache1")    // Extract the cache1 field of the app subtree	cache2 := ("app.cache2")                   // Extract the cache2 field of the app subtree	("Cache1:", cache1)                      // Print the cache field of the app subtree	("Cache2:", ())        // PrintappSubtreecache2All settings of fields

Deserialization

// Deserialization	var conf Config
	err = (&amp;conf) // Deserialize to structure	if err != nil {
		panic(("unable to decode into struct, %v", err)) // Handle errors	}
	("Config Struct:", conf) // Print the deserialized structure

This is all about this article about the go configuration management framework viper. For more related go configuration management content, please search for my previous articles or continue browsing the related articles below. I hope everyone will support me in the future!