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package install
import (
"bytes"
"encoding/json"
"errors"
"io/fs"
"os"
"path/filepath"
"slices"
"sort"
"github.com/johnandersen777/socialweb-computer-kcp/internal/hostcontract"
)
const (
OutcomeCreated = "created"
OutcomeFound = "found present"
OutcomeAdopted = "adopted"
OutcomeUpdated = "updated"
OutcomeNotNeeded = "not needed here"
OutcomeRefused = "refused"
)
const (
StepAccount = "account"
StepSubuid = "subuid"
StepSubgid = "subgid"
StepKVM = "kvm-group"
StepDelegation = "delegation-drop-in"
StepAppArmor = "apparmor-profile"
StepPassword = "node-password"
StepStateDir = "state-dir"
StepBinary = "binary"
StepConfig = "config"
StepUnitFiles = "unit-files"
StepLinger = "linger"
StepUnits = "core-units"
StepGuestImage = "guest-image"
StepBringUp = "bring-up"
StepCheckHost = "check-host"
StepRequesterRecord = "requester-record"
recordMode = 0o644
)
type Record struct {
Role hostcontract.Role `json:"role"`
Account string `json:"account"`
UID int `json:"uid"`
StateDir string `json:"stateDir"`
UnitPrefix string `json:"unitPrefix,omitempty"`
Handles []string `json:"handles,omitempty"`
Names []string `json:"names,omitempty"`
Steps map[string]string `json:"steps"`
SubidLines map[string]string `json:"subidLines,omitempty"`
CreatedDirs []string `json:"createdDirs,omitempty"`
UnitFiles []string `json:"unitFiles,omitempty"`
PrevOwner map[string][2]int `json:"previousOwner,omitempty"`
}
func loadRecord(path string) (*Record, error) {
b, err := os.ReadFile(path)
if err != nil {
return nil, err
}
var r Record
if err := json.Unmarshal(b, &r); err != nil {
return nil, errors.Join(errors.New("install: the install record "+path+" is not valid JSON"), err)
}
if r.Steps == nil {
r.Steps = map[string]string{}
}
return &r, nil
}
func loadOrNewRecord(path string, role hostcontract.Role, account, state string) (*Record, bool, error) {
r, err := loadRecord(path)
if errors.Is(err, fs.ErrNotExist) {
return &Record{Role: role, Account: account, StateDir: state, UID: -1, Steps: map[string]string{}}, false, nil
}
return r, err == nil, err
}
func (r *Record) set(step, outcome string) {
switch r.Steps[step] {
case OutcomeCreated, OutcomeAdopted:
return
case OutcomeUpdated:
if outcome != OutcomeCreated {
return
}
}
r.Steps[step] = outcome
}
func (r *Record) created(step string) bool { return r.Steps[step] == OutcomeCreated }
func (r *Record) addDir(p string) {
if slices.Contains(r.CreatedDirs, p) {
return
}
r.CreatedDirs = append(r.CreatedDirs, p)
}
func (r *Record) addUnitFile(p string) {
if slices.Contains(r.UnitFiles, p) {
return
}
r.UnitFiles = append(r.UnitFiles, p)
sort.Strings(r.UnitFiles)
}
func (r *Record) Instances() []string {
if r.Role == hostcontract.RoleRequester {
return r.Names
}
return r.Handles
}
func (r *Record) addNames(ns []string) {
for _, n := range ns {
if !slices.Contains(r.Names, n) {
r.Names = append(r.Names, n)
}
}
sort.Strings(r.Names)
}
func (r *Record) addHandles(hs []string) {
seen := map[string]bool{}
for _, h := range append(append([]string(nil), r.Handles...), hs...) {
seen[h] = true
}
r.Handles = r.Handles[:0]
for h := range seen {
r.Handles = append(r.Handles, h)
}
sort.Strings(r.Handles)
}
func (r *Record) bytes() []byte {
b, _ := json.MarshalIndent(r, "", " ")
return append(b, '\n')
}
func sameBytes(path string, b []byte) bool {
cur, err := os.ReadFile(path)
return err == nil && bytes.Equal(cur, b)
}
func ReadRecord(root, account string) (*Record, error) {
return loadRecord(filepath.Join(root, RecordPath(account)))
}
