halt.gno

 1package halt
 2
 3import (
 4	"chain"
 5	"strconv"
 6
 7	"gno.land/r/gnoswap/access/v1"
 8)
 9
10var haltStates HaltStateManager
11
12func init() {
13	haltStates = newHaltStateManagerByConfig(newNoneConfig())
14}
15
16// SetHaltLevel sets the global halt level.
17//
18// Parameters:
19//   - cur: Current realm context; callers use cross(cur) when crossing into this realm.
20//   - level: halt level to apply (None, SafeMode, Emergency, or Complete).
21//
22// Only callable by admin or governance.
23func SetHaltLevel(cur realm, level HaltLevel) {
24	caller := cur.Previous().Address()
25	access.AssertIsAdminOrGovernance(caller)
26
27	err := setHaltLevel(level)
28	if err != nil {
29		panic(err)
30	}
31
32	chain.Emit(
33		"SetHaltLevel",
34		"level", level.String(),
35		"description", level.Description(),
36		"caller", caller.String(),
37	)
38}
39
40// SetOperationStatus sets the halt status for a specific operation.
41//
42// Parameters:
43//   - cur: Current realm context; callers use cross(cur) when crossing into this realm.
44//   - op: operation type whose halt status is changed.
45//   - halted: true to block the operation, false to allow it.
46//
47// Only callable by admin or governance.
48func SetOperationStatus(cur realm, op OpType, halted bool) {
49	caller := cur.Previous().Address()
50	access.AssertIsAdminOrGovernance(caller)
51
52	if !op.IsValid() {
53		panic(makeErrorWithDetails(errInvalidOpType, op.String()))
54	}
55
56	err := haltStates.setOperationHalted(op, halted)
57	if err != nil {
58		panic(err)
59	}
60
61	chain.Emit(
62		"SetOperationStatus",
63		"operation", string(op),
64		"halted", strconv.FormatBool(halted),
65		"caller", caller.String(),
66	)
67}
68
69// setHaltLevel applies predefined halt level configuration.
70func setHaltLevel(level HaltLevel) error {
71	var config HaltConfig
72
73	switch level {
74	case HaltLevelNone:
75		config = newNoneConfig()
76	case HaltLevelSafeMode:
77		config = newSafeModeConfig()
78	case HaltLevelEmergency:
79		config = newEmergencyConfig()
80	case HaltLevelComplete:
81		config = newCompleteConfig()
82	default:
83		return makeErrorWithDetails(errInvalidHaltLevel, level.String())
84	}
85
86	return haltStates.updateOperationHaltsByConfig(config)
87}