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wei.xuan
gostnops
Commits
fa667d37
Commit
fa667d37
authored
Feb 16, 2021
by
ztelur
Browse files
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getRawClient
parent
7cf17969
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Showing
1 changed file
with
37 additions
and
39 deletions
+37
-39
client.go
database/kv/etcd/v3/client.go
+37
-39
No files found.
database/kv/etcd/v3/client.go
View file @
fa667d37
...
...
@@ -194,16 +194,22 @@ func (c *Client) keepSessionLoop(s *concurrency.Session) {
}
}
// if k not exist will put k/v in etcd, otherwise return nil
func
(
c
*
Client
)
put
(
k
string
,
v
string
,
opts
...
clientv3
.
OpOption
)
error
{
func
(
c
*
Client
)
GetRawClient
()
*
clientv3
.
Client
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
if
c
.
rawClient
==
nil
{
return
c
.
rawClient
}
// if k not exist will put k/v in etcd, otherwise return nil
func
(
c
*
Client
)
put
(
k
string
,
v
string
,
opts
...
clientv3
.
OpOption
)
error
{
rawClient
:=
c
.
GetRawClient
()
if
rawClient
==
nil
{
return
ErrNilETCDV3Client
}
_
,
err
:=
c
.
rawClient
.
Txn
(
c
.
ctx
)
.
_
,
err
:=
rawClient
.
Txn
(
c
.
ctx
)
.
If
(
clientv3
.
Compare
(
clientv3
.
Version
(
k
),
"<"
,
1
))
.
Then
(
clientv3
.
OpPut
(
k
,
v
,
opts
...
))
.
Commit
()
...
...
@@ -213,14 +219,13 @@ func (c *Client) put(k string, v string, opts ...clientv3.OpOption) error {
// if k not exist will put k/v in etcd
// if k is already exist in etcd, replace it
func
(
c
*
Client
)
update
(
k
string
,
v
string
,
opts
...
clientv3
.
OpOption
)
error
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
ErrNilETCDV3Client
}
_
,
err
:=
c
.
rawClient
.
Txn
(
c
.
ctx
)
.
_
,
err
:=
rawClient
.
Txn
(
c
.
ctx
)
.
If
(
clientv3
.
Compare
(
clientv3
.
Version
(
k
),
"!="
,
-
1
))
.
Then
(
clientv3
.
OpPut
(
k
,
v
,
opts
...
))
.
Commit
()
...
...
@@ -228,26 +233,24 @@ func (c *Client) update(k string, v string, opts ...clientv3.OpOption) error {
}
func
(
c
*
Client
)
delete
(
k
string
)
error
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
ErrNilETCDV3Client
}
_
,
err
:=
c
.
rawClient
.
Delete
(
c
.
ctx
,
k
)
_
,
err
:=
rawClient
.
Delete
(
c
.
ctx
,
k
)
return
err
}
func
(
c
*
Client
)
get
(
k
string
)
(
string
,
error
)
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
""
,
ErrNilETCDV3Client
}
resp
,
err
:=
c
.
rawClient
.
Get
(
c
.
ctx
,
k
)
resp
,
err
:=
rawClient
.
Get
(
c
.
ctx
,
k
)
if
err
!=
nil
{
return
""
,
err
}
...
...
@@ -261,26 +264,24 @@ func (c *Client) get(k string) (string, error) {
// CleanKV delete all key and value
func
(
c
*
Client
)
CleanKV
()
error
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
ErrNilETCDV3Client
}
_
,
err
:=
c
.
rawClient
.
Delete
(
c
.
ctx
,
""
,
clientv3
.
WithPrefix
())
_
,
err
:=
rawClient
.
Delete
(
c
.
ctx
,
""
,
clientv3
.
WithPrefix
())
return
err
}
func
(
c
*
Client
)
getChildren
(
k
string
)
([]
string
,
[]
string
,
error
)
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
nil
,
nil
,
ErrNilETCDV3Client
}
resp
,
err
:=
c
.
rawClient
.
Get
(
c
.
ctx
,
k
,
clientv3
.
WithPrefix
())
resp
,
err
:=
rawClient
.
Get
(
c
.
ctx
,
k
,
clientv3
.
WithPrefix
())
if
err
!=
nil
{
return
nil
,
nil
,
err
}
...
...
@@ -299,51 +300,48 @@ func (c *Client) getChildren(k string) ([]string, []string, error) {
}
func
(
c
*
Client
)
watchWithPrefix
(
prefix
string
)
(
clientv3
.
WatchChan
,
error
)
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
nil
,
ErrNilETCDV3Client
}
return
c
.
rawClient
.
Watch
(
c
.
ctx
,
prefix
,
clientv3
.
WithPrefix
()),
nil
return
rawClient
.
Watch
(
c
.
ctx
,
prefix
,
clientv3
.
WithPrefix
()),
nil
}
func
(
c
*
Client
)
watch
(
k
string
)
(
clientv3
.
WatchChan
,
error
)
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
nil
,
ErrNilETCDV3Client
}
return
c
.
rawClient
.
Watch
(
c
.
ctx
,
k
),
nil
return
rawClient
.
Watch
(
c
.
ctx
,
k
),
nil
}
func
(
c
*
Client
)
keepAliveKV
(
k
string
,
v
string
)
error
{
c
.
lock
.
RLock
()
defer
c
.
lock
.
RUnlock
()
rawClient
:=
c
.
GetRawClient
()
if
c
.
rawClient
==
nil
{
if
rawClient
==
nil
{
return
ErrNilETCDV3Client
}
// make lease time longer, since 1 second is too short
lease
,
err
:=
c
.
rawClient
.
Grant
(
c
.
ctx
,
int64
(
30
*
time
.
Second
.
Seconds
()))
lease
,
err
:=
rawClient
.
Grant
(
c
.
ctx
,
int64
(
30
*
time
.
Second
.
Seconds
()))
if
err
!=
nil
{
return
perrors
.
WithMessage
(
err
,
"grant lease"
)
}
keepAlive
,
err
:=
c
.
rawClient
.
KeepAlive
(
c
.
ctx
,
lease
.
ID
)
keepAlive
,
err
:=
rawClient
.
KeepAlive
(
c
.
ctx
,
lease
.
ID
)
if
err
!=
nil
||
keepAlive
==
nil
{
c
.
rawClient
.
Revoke
(
c
.
ctx
,
lease
.
ID
)
rawClient
.
Revoke
(
c
.
ctx
,
lease
.
ID
)
if
err
!=
nil
{
return
perrors
.
WithMessage
(
err
,
"keep alive lease"
)
}
return
perrors
.
New
(
"keep alive lease"
)
}
_
,
err
=
c
.
rawClient
.
Put
(
c
.
ctx
,
k
,
v
,
clientv3
.
WithLease
(
lease
.
ID
))
_
,
err
=
rawClient
.
Put
(
c
.
ctx
,
k
,
v
,
clientv3
.
WithLease
(
lease
.
ID
))
return
perrors
.
WithMessage
(
err
,
"put k/v with lease"
)
}
...
...
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