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ruanhaishen
redis
Commits
8fb6048e
Commit
8fb6048e
authored
Jan 31, 2018
by
antirez
Browse files
CG: RDB saving part 1, metadata and PEL.
parent
e76fb4ab
Changes
1
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Inline
Side-by-side
src/rdb.c
View file @
8fb6048e
...
@@ -642,7 +642,48 @@ int rdbLoadObjectType(rio *rdb) {
...
@@ -642,7 +642,48 @@ int rdbLoadObjectType(rio *rdb) {
return
type
;
return
type
;
}
}
/* Save a Redis object. Returns -1 on error, number of bytes written on success. */
/* This helper function serializes a consumer group Pending Entries List (PEL)
* into the RDB file. The 'nacks' argument tells the function if also persist
* the informations about the not acknowledged message, or if to persist
* just the IDs: this is useful because for the global consumer group PEL
* we serialized the NACKs as well, but when serializing the local consumer
* PELs we just add the ID, that will be resolved inside the global PEL to
* put a reference to the same structure. */
ssize_t
rdbSaveStreamPEL
(
rio
*
rdb
,
rax
*
pel
,
int
nacks
)
{
ssize_t
n
,
nwritten
=
0
;
/* Number of entries in the PEL. */
if
((
n
=
rdbSaveLen
(
rdb
,
raxSize
(
pel
)))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* Save each entry. */
raxIterator
ri
;
raxStart
(
&
ri
,
pel
);
raxSeek
(
&
ri
,
"^"
,
NULL
,
0
);
while
(
raxNext
(
&
ri
))
{
/* We store IDs in raw form as 128 big big endian numbers, like
* they are inside the radix tree key. */
if
((
n
=
rdbWriteRaw
(
rdb
,
ri
.
key
,
sizeof
(
streamID
)))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
if
(
nacks
)
{
streamNACK
*
nack
=
ri
.
data
;
if
((
n
=
rdbSaveMillisecondTime
(
rdb
,
nack
->
delivery_time
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
if
((
n
=
rdbSaveLen
(
rdb
,
nack
->
delivery_count
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* We don't save the consumer name: we'll save the pending IDs
* for each consumer in the consumer PEL, and resolve the consumer
* at loading time. */
}
}
raxStop
(
&
ri
);
return
nwritten
;
}
/* Save a Redis object.
* Returns -1 on error, number of bytes written on success. */
ssize_t
rdbSaveObject
(
rio
*
rdb
,
robj
*
o
)
{
ssize_t
rdbSaveObject
(
rio
*
rdb
,
robj
*
o
)
{
ssize_t
n
=
0
,
nwritten
=
0
;
ssize_t
n
=
0
,
nwritten
=
0
;
...
@@ -798,6 +839,37 @@ ssize_t rdbSaveObject(rio *rdb, robj *o) {
...
@@ -798,6 +839,37 @@ ssize_t rdbSaveObject(rio *rdb, robj *o) {
nwritten
+=
n
;
nwritten
+=
n
;
if
((
n
=
rdbSaveLen
(
rdb
,
s
->
last_id
.
seq
))
==
-
1
)
return
-
1
;
if
((
n
=
rdbSaveLen
(
rdb
,
s
->
last_id
.
seq
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
nwritten
+=
n
;
/* The consumer groups and their clients are part of the stream
* type, so serialize every consumer group. */
/* Save the number of groups. */
if
((
n
=
rdbSaveLen
(
rdb
,
raxSize
(
s
->
cgroups
)))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* Serialize each consumer group. */
raxStart
(
&
ri
,
s
->
cgroups
);
raxSeek
(
&
ri
,
"^"
,
NULL
,
0
);
while
(
raxNext
(
&
ri
))
{
streamCG
*
cg
=
ri
.
data
;
/* Save the consumer group name. */
if
((
n
=
rdbSaveRawString
(
rdb
,
ri
.
key
,
ri
.
key_len
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* Last ID. */
if
((
n
=
rdbSaveLen
(
rdb
,
cg
->
last_id
.
ms
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
if
((
n
=
rdbSaveLen
(
rdb
,
cg
->
last_id
.
seq
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* Save the global PEL. */
if
((
n
=
rdbSaveStreamPEL
(
rdb
,
cg
->
pel
,
1
))
==
-
1
)
return
-
1
;
nwritten
+=
n
;
/* Save the consumers of this group. */
}
raxStop
(
&
ri
);
}
else
if
(
o
->
type
==
OBJ_MODULE
)
{
}
else
if
(
o
->
type
==
OBJ_MODULE
)
{
/* Save a module-specific value. */
/* Save a module-specific value. */
RedisModuleIO
io
;
RedisModuleIO
io
;
...
...
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