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author | Franck Cuny <franck@fcuny.net> | 2024-01-21 13:11:33 -0800 |
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committer | Franck Cuny <franck@fcuny.net> | 2024-01-21 13:12:44 -0800 |
commit | b5ee47e701259575f22745f920fb4e7013eb0412 (patch) | |
tree | 870b9800907a01187d1b0407a18b646c00c90199 /pkg/flake/lock | |
parent | install some go related programs (diff) | |
download | world-b5ee47e701259575f22745f920fb4e7013eb0412.tar.gz |
initial version of the flake-info command
A tool to display information about a flake. For now we shows all the inputs and when they were updated last.
Diffstat (limited to 'pkg/flake/lock')
-rw-r--r-- | pkg/flake/lock/main.go | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/pkg/flake/lock/main.go b/pkg/flake/lock/main.go new file mode 100644 index 0000000..0fa21f4 --- /dev/null +++ b/pkg/flake/lock/main.go @@ -0,0 +1,93 @@ +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 +} |