- 17 Nov, 2020 3 commits
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Meir Shpilraien (Spielrein) authored
Blocking command should not be used with MULTI, LUA, and RM_Call. This is because, the caller, who executes the command in this context, expects a reply. Today, LUA and MULTI have a special (and different) treatment to blocking commands: LUA - Most commands are marked with no-script flag which are checked when executing and command from LUA, commands that are not marked (like XREAD) verify that their blocking mode is not used inside LUA (by checking the CLIENT_LUA client flag). MULTI - Command that is going to block, first verify that the client is not inside multi (by checking the CLIENT_MULTI client flag). If the client is inside multi, they return a result which is a match to the empty key with no timeout (for example blpop inside MULTI will act as lpop) For modules that perform RM_Call with blocking command, the returned results type is REDISMODULE_REPLY_UNKNOWN and the caller can not really know what happened. Disadvantages of the current state are: No unified approach, LUA, MULTI, and RM_Call, each has a different treatment Module can not safely execute blocking command (and get reply or error). Though It is true that modules are not like LUA or MULTI and should be smarter not to execute blocking commands on RM_Call, sometimes you want to execute a command base on client input (for example if you create a module that provides a new scripting language like javascript or python). While modules (on modules command) can check for REDISMODULE_CTX_FLAGS_LUA or REDISMODULE_CTX_FLAGS_MULTI to know not to block the client, there is no way to check if the command came from another module using RM_Call. So there is no way for a module to know not to block another module RM_Call execution. This commit adds a way to unify the treatment for blocking clients by introducing a new CLIENT_DENY_BLOCKING client flag. On LUA, MULTI, and RM_Call the new flag turned on to signify that the client should not be blocked. A blocking command verifies that the flag is turned off before blocking. If a blocking command sees that the CLIENT_DENY_BLOCKING flag is on, it's not blocking and return results which are matches to empty key with no timeout (as MULTI does today). The new flag is checked on the following commands: List blocking commands: BLPOP, BRPOP, BRPOPLPUSH, BLMOVE, Zset blocking commands: BZPOPMIN, BZPOPMAX Stream blocking commands: XREAD, XREADGROUP SUBSCRIBE, PSUBSCRIBE, MONITOR In addition, the new flag is turned on inside the AOF client, we do not want to block the AOF client to prevent deadlocks and commands ordering issues (and there is also an existing assert in the code that verifies it). To keep backward compatibility on LUA, all the no-script flags on existing commands were kept untouched. In addition, a LUA special treatment on XREAD and XREADGROUP was kept. To keep backward compatibility on MULTI (which today allows SUBSCRIBE, and PSUBSCRIBE). We added a special treatment on those commands to allow executing them on MULTI. The only backward compatibility issue that this PR introduces is that now MONITOR is not allowed inside MULTI. Tests were added to verify blocking commands are not blocking the client on LUA, MULTI, or RM_Call. Tests were added to verify the module can check for CLIENT_DENY_BLOCKING flag. Co-authored-by:
Oran Agra <oran@redislabs.com> Co-authored-by:
Itamar Haber <itamar@redislabs.com>
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thomaston authored
ZREVRANGEBYSCORE key max min [WITHSCORES] [LIMIT offset count] When the offset is too large, the query is very slow. Especially when the offset is greater than the length of zset it is easy to determine whether the offset is greater than the length of zset at first, and If it exceed the length of zset, then return directly. Co-authored-by:
Oran Agra <oran@redislabs.com>
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swamp0407 authored
Syntax: COPY <key> <new-key> [DB <dest-db>] [REPLACE] No support for module keys yet. Co-authored-by: tmgauss Co-authored-by:
Itamar Haber <itamar@redislabs.com> Co-authored-by:
Oran Agra <oran@redislabs.com>
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- 16 Nov, 2020 1 commit
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chenyangyang authored
Add two optional callbacks to the RedisModuleTypeMethods structure, which is `free_effort` and `unlink`. the `free_effort` callback indicates the effort required to free a module memory. Currently, if the effort exceeds LAZYFREE_THRESHOLD, the module memory may be released asynchronously. the `unlink` callback indicates the key has been removed from the DB by redis, and may soon be freed by a background thread. Add `lazyfreed_objects` info field, which represents the number of objects that have been lazyfreed since redis was started. Add `RM_GetTypeMethodVersion` API, which return the current redis-server runtime value of `REDISMODULE_TYPE_METHOD_VERSION`. You can use that when calling `RM_CreateDataType` to know which fields of RedisModuleTypeMethods are gonna be supported and which will be ignored.
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- 15 Nov, 2020 1 commit
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Felipe Machado authored
- Add ZDIFF and ZDIFFSTORE which work similarly to SDIFF and SDIFFSTORE - Make sure the new WITHSCORES argument that was added for ZUNION isn't considered valid for ZUNIONSTORE Co-authored-by:
Oran Agra <oran@redislabs.com>
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- 11 Nov, 2020 1 commit
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Yossi Gottlieb authored
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- 10 Nov, 2020 1 commit
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Madelyn Olson authored
* Rewritten commands are logged as their original command Co-authored-by:
Madelyn Olson <madelyneolson@gmail.com>
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- 09 Nov, 2020 2 commits
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nitaicaro authored
Test support for the new map, null and push message types. Map objects are parsed as a list of lists of key value pairs. for instance: user => john password => 123 will be parsed to the following TCL list: {{user john} {password 123}} Also added the following tests: Redirection still works with RESP3 Able to use a RESP3 client as a redirection client No duplicate invalidation messages when turning BCAST mode on after normal tracking Server is able to evacuate enough keys when num of keys surpasses limit by more than defined initial effort Different clients using different protocols can track the same key OPTOUT tests OPTIN tests Clients can redirect to the same connection tracking-redir-broken test HELLO 3 checks Invalidation messages still work when using RESP3, with and without redirection Switching to RESP3 doesn't disturb previous tracked keys Tracking info is correct Flushall and flushdb produce invalidation messages These tests achieve 100% line coverage for tracking.c using lcov.
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Meir Shpilraien (Spielrein) authored
The RMAPI_FUNC_SUPPORTED was defined in the wrong place on redismodule.h and was not visible to modules.
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- 08 Nov, 2020 1 commit
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sundb authored
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- 05 Nov, 2020 1 commit
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Yossi Gottlieb authored
Perform full reset of all client connection states, is if the client was disconnected and re-connected. This affects: * MULTI state * Watched keys * MONITOR mode * Pub/Sub subscription * ACL/Authenticated state * Client tracking state * Cluster read-only/asking state * RESP version (reset to 2) * Selected database * CLIENT REPLY state The response is +RESET to make it easily distinguishable from other responses. Co-authored-by:
Oran Agra <oran@redislabs.com> Co-authored-by:
Itamar Haber <itamar@redislabs.com>
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- 04 Nov, 2020 4 commits
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Yossi Gottlieb authored
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Yossi Gottlieb authored
Not disabling save, slower systems begun background save that did not complete in time, resulting with SAVE failing with "ERR Background save already in progress".
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filipe oliveira authored
Enable specifying the preferred ciphers and/or ciphersuites for redis-cli/redis-benchmark. Co-authored-by:
Yossi Gottlieb <yossigo@gmail.com>
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Meir Shpilraien (Spielrein) authored
The crash reports cause false-positive warnings when run with valgrind.
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- 03 Nov, 2020 3 commits
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Meir Shpilraien (Spielrein) authored
The reason that we want to get a full crash report on SIGABRT is that the jmalloc, when detecting a corruption, calls abort(). This will cause the Redis to exist silently without any report and without any way to analyze what happened.
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Oran Agra authored
- Generates a more backwards compatible command stream - Slightly more efficient execution in replica/AOF - Add a test for coverage
- 28 Oct, 2020 2 commits
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Madelyn Olson authored
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filipe oliveira authored
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- 27 Oct, 2020 1 commit
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Wang Yuan authored
Remove 'fork child $pid' log in replication.tcl
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- 26 Oct, 2020 2 commits
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Oran Agra authored
The tests sometimes fail to find a log message. Recently i added a print that shows the log files that are searched and it shows that the message was in deed there. The only reason i can't think of for this seach to fail, is we we happened to read an incomplete line, which didn't match our pattern and then on the next iteration we would continue reading from the line after it. The fix is to always re-evaluation the previous line.
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filipe oliveira authored
- add test suite coverage for redis-benchmark - add --version (similar to what redis-cli has) - fix bug sending more requests than intended when pipeline > 1. - when done sending requests, avoid freeing client in the write handler, in theory before responses are received (probably dead code since the read handler will call clientDone first) Co-authored-by:
Oran Agra <oran@redislabs.com>
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- 25 Oct, 2020 1 commit
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Zach Fewtrell authored
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- 22 Oct, 2020 3 commits
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Qu Chen authored
This wrong behavior was backed by a test, and also documentation, and dates back to 2010. But it makes no sense to anyone involved so it was decided to change that. Note that 20eeddfb (invalidate watch on expire on access) was released in 6.0 RC2 and 2d1968f8 released in in 6.0.0 GA (invalidate watch when key is evicted). both of which do similar changes.
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Oran Agra authored
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Yossi Gottlieb authored
Useful for running tests on systems which may be way slower than usual.
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- 18 Oct, 2020 2 commits
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Yossi Gottlieb authored
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Wen Hui authored
introduces a NOMKSTREAM option for xadd command, this would be useful for some use cases when we do not want to create new stream by default: XADD key [MAXLEN [~|=] <count>] [NOMKSTREAM] <ID or *> [field value] [field value]
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- 11 Oct, 2020 5 commits
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Yossi Gottlieb authored
This cleans up and simplifies the API by passing the command name as the first argument. Previously the command name was specified explicitly, but was still included in the argv.
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Meir Shpilraien (Spielrein) authored
* Introduce a new API's: RM_GetContextFlagsAll, and RM_GetKeyspaceNotificationFlagsAll that will return the full flags mask of each feature. The module writer can check base on this value if the Flags he needs are supported or not. * For each flag, introduce a new value on redismodule.h, this value represents the LAST value and should be there as a reminder to update it when a new value is added, also it will be used in the code to calculate the full flags mask (assuming flags are incrementally increasing). In addition, stated that the module writer should not use the LAST flag directly and he should use the GetFlagAll API's. * Introduce a new API: RM_IsSubEventSupported, that returns for a given event and subevent, whether or not the subevent supported. * Introduce a new macro RMAPI_FUNC_SUPPORTED(func) that returns whether or not a function API is supported by comparing it to NULL. * Introduce a new API: int RM_GetServerVersion();, that will return the current Redis version in the format 0x00MMmmpp; e.g. 0x00060008; * Changed unstable version from 999.999.999 to 255.255.255 Co-authored-by:
Oran Agra <oran@redislabs.com> Co-authored-by:
Yossi Gottlieb <yossigo@gmail.com>
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Yossi Gottlieb authored
This API function makes it possible to retrieve the X.509 certificate used by clients to authenticate TLS connections.
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Yossi Gottlieb authored
The main motivation here is to provide a way for modules to create a single, global context that can be used for logging. Currently, it is possible to obtain a thread-safe context that is not attached to any blocked client by using `RM_GetThreadSafeContext`. However, the attached context is not linked to the module identity so log messages produced are not tagged with the module name. Ideally we'd fix this in `RM_GetThreadSafeContext` itself but as it doesn't accept the current context as an argument there's no way to do that in a backwards compatible manner.
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Yossi Gottlieb authored
This is essentially the same as calling COMMAND GETKEYS but provides a more efficient interface that can be used in every context (i.e. not a Redis command).
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- 08 Oct, 2020 2 commits
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Felipe Machado authored
Adding [B]LMOVE <src> <dst> RIGHT|LEFT RIGHT|LEFT. deprecating [B]RPOPLPUSH. Note that when receiving a BRPOPLPUSH we'll still propagate an RPOPLPUSH, but on BLMOVE RIGHT LEFT we'll propagate an LMOVE improvement to existing tests - Replace "after 1000" with "wait_for_condition" when wait for clients to block/unblock. - Add a pre-existing element to target list on basic tests so that we can check if the new element was added to the correct side of the list. - check command stats on the replica to make sure the right command was replicated Co-authored-by:
Oran Agra <oran@redislabs.com>
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Madelyn Olson authored
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- 06 Oct, 2020 1 commit
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Oran Agra authored
I suppose that it was overlooked, since till recently none of the blocked commands were readonly. other changes: - add test for the above. - add better support for additional (and deferring) clients for cluster tests - improve a test which left the client in MULTI state.
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- 05 Oct, 2020 1 commit
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Oran Agra authored
track and report memory used by clients argv. this is very usaful in case clients started sending a command and didn't complete it. in which case the first args of the command are already trimmed from the query buffer. in an effort to avoid cache misses and overheads while keeping track of these, i avoid calling sdsZmallocSize and instead use the sdslen / bulk-len which can at least give some insight into the problem. This memory is now added to the total clients memory usage, as well as the client list.
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- 02 Oct, 2020 1 commit
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Nykolas Laurentino de Lima authored
Add optional GET parameter to SET command in order to set a new value to a key and retrieve the old key value. With this change we can deprecate `GETSET` command and use only the SET command with the GET parameter.
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- 01 Oct, 2020 1 commit
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Oran Agra authored
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