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|
package lock
import (
"encoding/json"
"fmt"
"os"
)
type FlakeLock struct {
// Version of the lock file
Version int
// Root is the root node for the flake, containing all the inputs
Root RootNode
// Nodes represent all the inputs node for a flake
Nodes map[string]Node
}
type Node struct {
// Flake indicate whether the input is a flake
Flake bool `json:"flake"`
// Locked represent the locked attribute of the input
Locked repoLocked `json:"locked"`
// Original represent the user supplied attributes for the input
Original repoOriginal `json:"original"`
}
type repoLocked struct {
// LastModified represent the timestamp of when the input was updated last
LastModified int64 `json:"lastModified"`
// NarHash is the NAR hash for the input
NarHash string `json:"narHash"`
// Owner of the repository
Owner string `json:"owner"`
// Repository of the input
Repo string `json:"repo"`
// Revision of the input
Rev string `json:"rev"`
// Type of input
Type string `json:"type"`
}
type repoOriginal struct {
Owner string `json:"owner"`
Ref string `json:"ref"`
Repo string `json:"repo"`
Type string `json:"type"`
}
// RootNode is a mapping of input
type RootNode struct {
// Inputs contains the mapping of input
Inputs map[string]string `json:"inputs"`
}
// New return a representation of a flake lock
func New(flakeLockPath string) (*FlakeLock, error) {
content, err := os.ReadFile(flakeLockPath)
if err != nil {
return nil, fmt.Errorf("failed to read %s: %v", flakeLockPath, err)
}
var lock struct {
Version int `json:"version"`
Root string `json:"root"`
Nodes map[string]json.RawMessage `json:"nodes"`
}
if err := json.Unmarshal(content, &lock); err != nil {
return nil, fmt.Errorf("failed to parse %s: %v", flakeLockPath, err)
}
var flakeLock FlakeLock
flakeLock.Version = lock.Version
flakeLock.Nodes = map[string]Node{}
for nodeName, node := range lock.Nodes {
if nodeName != lock.Root {
var n Node
if err := json.Unmarshal(node, &n); err != nil {
return nil, fmt.Errorf("failed to read node %s: %v", nodeName, err)
}
flakeLock.Nodes[nodeName] = n
} else {
var r RootNode
if err := json.Unmarshal(node, &r); err != nil {
return nil, fmt.Errorf("failed to read the root node: %v", err)
}
flakeLock.Root = r
}
}
return &flakeLock, nil
}
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