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submodule
brpc
Commits
c59aecdd
Commit
c59aecdd
authored
Nov 12, 2018
by
TousakaRin
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Can be isolated in advance when initializing
parent
2685cd8c
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2 changed files
with
13 additions
and
3 deletions
+13
-3
circuit_breaker.cpp
src/brpc/circuit_breaker.cpp
+11
-2
circuit_breaker.h
src/brpc/circuit_breaker.h
+2
-1
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src/brpc/circuit_breaker.cpp
View file @
c59aecdd
...
...
@@ -64,6 +64,7 @@ CircuitBreaker::EmaErrorRecorder::EmaErrorRecorder(int window_size,
,
_max_error_percent
(
max_error_percent
)
,
_smooth
(
std
::
pow
(
EPSILON
,
1.0
/
window_size
))
,
_sample_count
(
0
)
,
_error_count
(
0
)
,
_ema_error_cost
(
0
)
,
_ema_latency
(
0
)
{
}
...
...
@@ -80,8 +81,15 @@ bool CircuitBreaker::EmaErrorRecorder::OnCallEnd(int error_code,
healthy
=
UpdateErrorCost
(
latency
,
ema_latency
);
}
if
(
_sample_count
.
fetch_add
(
1
,
butil
::
memory_order_relaxed
)
<
_window_size
)
{
return
true
;
// When the window is initializing, use error_rate to determine
// if it needs to be isolated.
if
(
_sample_count
.
load
(
butil
::
memory_order_relaxed
)
<
_window_size
&&
_sample_count
.
fetch_add
(
1
,
butil
::
memory_order_relaxed
)
<
_window_size
)
{
if
(
error_code
!=
0
)
{
const
int32_t
error_count
=
_error_count
.
fetch_add
(
1
,
butil
::
memory_order_relaxed
);
return
error_count
<
_window_size
*
_max_error_percent
/
100
;
}
}
return
healthy
;
...
...
@@ -89,6 +97,7 @@ bool CircuitBreaker::EmaErrorRecorder::OnCallEnd(int error_code,
void
CircuitBreaker
::
EmaErrorRecorder
::
Reset
()
{
_sample_count
.
store
(
0
,
butil
::
memory_order_relaxed
);
_error_count
.
store
(
0
,
butil
::
memory_order_relaxed
);
_ema_error_cost
.
store
(
0
,
butil
::
memory_order_relaxed
);
_ema_latency
.
store
(
0
,
butil
::
memory_order_relaxed
);
}
...
...
src/brpc/circuit_breaker.h
View file @
c59aecdd
...
...
@@ -74,7 +74,8 @@ private:
const
int
_max_error_percent
;
const
double
_smooth
;
butil
::
atomic
<
int64_t
>
_sample_count
;
butil
::
atomic
<
int32_t
>
_sample_count
;
butil
::
atomic
<
int32_t
>
_error_count
;
butil
::
atomic
<
int64_t
>
_ema_error_cost
;
butil
::
atomic
<
int64_t
>
_ema_latency
;
};
...
...
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