code wiki / _hdl_build / nx_apistack_breaker_gate.nx
`nx_apistack_breaker_gate.nx` source

1// nx_apistack_breaker_gate.nx -- hermetic gate for CAP-API-BREAKER. Proves the CLOSED->OPEN->HALF->CLOSED/OPEN
2// transitions: closed allows, threshold failures open it, open fails fast in cooldown, cooldown -> half-open probe,
3// probe success recovers, probe failure re-opens. Sovereign: nx_syscalls + nx_apistack_breaker. expect_exit: 0
4import "nx_syscalls.nx"
5import "nx_apistack_breaker.nx"
6import "nx_gate_verdict.nx"
7
8func gp(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 }
9func gn(v: i64) -> i64 { var t: i64=v; if t<0{sys_write(1,"-" as *u8,1);t=0-t} let tm:*u8=sys_mmap(24); var k:i64=0; if t==0{tm[0]=48 as u8;k=1} while t>0{tm[k]=(48+(t%10)) as u8;t=t/10;k=k+1} let b:*u8=sys_mmap(24); var j:i64=0; while j<k{b[j]=tm[k-1-j];j=j+1} sys_write(1,b,k); return 0 }
10
11func main(argc: i64, argv: *i64) -> i64 {
12    gp("=== nx_apistack_breaker_gate (circuit-breaker CLOSED/OPEN/HALF) ===\n" as *u8)
13    let cb: *i64 = sys_mmap(64) as *i64   // cb[0]=CLOSED(0) cb[1]=0 cb[2]=0
14    var pass: i64 = 0; var fail: i64 = 0
15
16    // T1 closed -> allow
17    if cb_allow(cb, 0, 10) == 1 { pass=pass+1; gp("  T1 CLOSED -> allow PASS\n" as *u8) } else { fail=fail+1; gp("  T1 FAIL\n" as *u8) }
18
19    // T2 3 failures -> OPEN, then fail-fast within cooldown
20    cb_record(cb, 0, 3, 1); cb_record(cb, 0, 3, 2); cb_record(cb, 0, 3, 3)
21    if cb[0] == CB_OPEN { if cb_allow(cb, 5, 10) == 0 { pass=pass+1; gp("  T2 3 fails -> OPEN, fail-fast in cooldown PASS\n" as *u8) } else { fail=fail+1; gp("  T2 FAIL not rejecting\n" as *u8) } } else { fail=fail+1; gp("  T2 FAIL not open\n" as *u8) }
22
23    // T3 cooldown elapsed -> HALF (probe allowed)
24    let a3: i64 = cb_allow(cb, 15, 10)
25    if a3 == 1 { if cb[0] == CB_HALF { pass=pass+1; gp("  T3 cooldown -> HALF-OPEN probe allowed PASS\n" as *u8) } else { fail=fail+1; gp("  T3 FAIL not half\n" as *u8) } } else { fail=fail+1; gp("  T3 FAIL probe blocked\n" as *u8) }
26
27    // T4 probe success -> CLOSED (recovered)
28    cb_record(cb, 1, 3, 16)
29    if cb[0] == CB_CLOSED { pass=pass+1; gp("  T4 probe success -> CLOSED (recovered) PASS\n" as *u8) } else { fail=fail+1; gp("  T4 FAIL\n" as *u8) }
30
31    // T5 re-open then probe FAILURE -> OPEN again
32    cb_record(cb, 0, 3, 20); cb_record(cb, 0, 3, 21); cb_record(cb, 0, 3, 22)   // -> OPEN (open_since=22)
33    cb_allow(cb, 40, 10)                                                        // -> HALF
34    cb_record(cb, 0, 3, 41)                                                     // probe fails in HALF -> OPEN
35    if cb[0] == CB_OPEN { pass=pass+1; gp("  T5 probe failure -> OPEN again PASS\n" as *u8) } else { fail=fail+1; gp("  T5 FAIL\n" as *u8) }
36
37    gp("RESULT pass=" as *u8); gn(pass); gp(" fail=" as *u8); gn(fail)
38    // MIGRATED onto nx_gate_verdict by nx_gate_dry_apply (D001, minimal form): every check
39    // row above is untouched, so the PASS/FAIL vector cannot change; only the hand-rolled
40    // verdict emission is replaced by the ONE shared base class. Proven by nx_gate_migrate verify.
41    let ctr__dry: *i64 = gv_ctr()
42    ctr__dry[0] = pass
43    ctr__dry[1] = pass + fail
44    let rc__dry: i64 = gv_verdict("APISTACK-BREAKER-GATE" as *u8, ctr__dry, "teeth unchanged; verdict emission migrated onto the shared base class" as *u8)
45    sys_exit(rc__dry)
46    return rc__dry
47}
nx_apistack_breaker_gate.nx source

`nx_apistack_breaker_gate.nx` source
