Go library for Parsing Ansible inventory files.
We are trying to follow the logic of Ansible parser as close as possible.
Documentation on ansible inventory files can be found here:
https://docs.ansible.com/ansible/latest/user_guide/intro_inventory.html
- Variables
- Host patterns
- Nested groups
package aini // import "github.com/relex/aini"
TYPES
type Group struct {
Name string
Vars map[string]string
Hosts map[string]*Host
Children map[string]*Group
Parents map[string]*Group
}
Group represents ansible group
func GroupMapListValues(mymap map[string]*Group) []*Group
GroupMapListValues transforms map of Groups into Group list
type Host struct {
Name string
Port int
Vars map[string]string
Groups map[string]*Group
}
Host represents ansible host
func HostMapListValues(mymap map[string]*Host) []*Host
HostMapListValues transforms map of Hosts into Host list
type InventoryData struct {
Groups map[string]*Group
Hosts map[string]*Host
}
InventoryData contains parsed inventory representation Note: Groups and
Hosts fields contain all the groups and hosts, not only top-level
func Parse(r io.Reader) (*InventoryData, error)
Parse using some Reader
func ParseFile(f string) (*InventoryData, error)
ParseFile parses Inventory represented as a file
func ParseString(input string) (*InventoryData, error)
ParseString parses Inventory represented as a string
func (inventory *InventoryData) Match(m string) []*Host
Match looks for a hosts that match the pattern
func (inventory *InventoryData) Reconcile()
Reconcile ensures inventory basic rules, run after updates
import (
"strings"
"github.com/relex/aini"
)
func main() {
// Load from string example
inventoryReader := strings.NewReader(`
host1:2221
[web]
host2 ansible_ssh_user=root
`)
var inventory InventoryData = aini.Parse(inventoryReader)
// Querying hosts
_ = inventory.Hosts["host1"].Name == "host1" // true
_ = inventory.Hosts["host1"].Port == 2221 // true
_ = inventory.Hosts["host2"].Name == "host2"] // true
_ = inventory.Hosts["host2"].Post == 22] // true
_ = len(inventory.Hosts["host1"].Groups) == 2 // all, ungrouped
_ = len(inventory.Hosts["host2"].Groups) == 2 // all, web
_ = len(inventory.Match("host*")) == 2 // host1, host2
_ = // Querying groups
_ = inventory.Groups["web"].Hosts[0].Name == "host2" // true
_ = len(inventory.Groups["all"].Hosts) == 2 // true
}
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