- 04 Jan, 2022 2 commits
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guybe7 authored
Creating fork (or even a foreground SAVE) during a transaction breaks the atomicity of the transaction. In addition to that, it could mess up the propagated transaction to the AOF file. This change blocks SAVE, PSYNC, SYNC and SHUTDOWN from being executed inside MULTI-EXEC. It does that by adding a command flag, so that modules can flag their commands with that flag too. Besides it changes BGSAVE, BGREWRITEAOF, and CONFIG SET appendonly, to turn the scheduled flag instead of forking righ taway. Other changes: * expose `protected`, `no-async-loading`, and `no_multi` flags in COMMAND command * add a test to validate propagation of FLUSHALL inside a transaction. * add a test to validate how CONFIG SET that errors reacts in a transaction Co-authored-by:
Oran Agra <oran@redislabs.com>
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zhaozhao.zz authored
This would mean that the effects of `CONFIG SET maxmemory` may not be visible once the command returns. That could anyway happen since incremental eviction was added in redis 6.2 (see #7653) We do this to fix one of the propagation bugs about eviction see #9890 and #10014.
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- 03 Jan, 2022 4 commits
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chenyang8094 authored
Implement Multi-Part AOF mechanism to avoid overheads during AOFRW. Introducing a folder with multiple AOF files tracked by a manifest file. The main issues with the the original AOFRW mechanism are: * buffering of commands that are processed during rewrite (consuming a lot of RAM) * freezes of the main process when the AOFRW completes to drain the remaining part of the buffer and fsync it. * double disk IO for the data that arrives during AOFRW (had to be written to both the old and new AOF files) The main modifications of this PR: 1. Remove the AOF rewrite buffer and related code. 2. Divide the AOF into multiple files, they are classified as two types, one is the the `BASE` type, it represents the full amount of data (Maybe AOF or RDB format) after each AOFRW, there is only one `BASE` file at most. The second is `INCR` type, may have more than one. They represent the incremental commands since the last AOFRW. 3. Use a AOF manifest file to record and manage these AOF files mentioned above. 4. The original configuration of `appendfilename` will be the base part of the new file name, for example: `appendonly.aof.1.base.rdb` and `appendonly.aof.2.incr.aof` 5. Add manifest-related TCL tests, and modified some existing tests that depend on the `appendfilename` 6. Remove the `aof_rewrite_buffer_length` field in info. 7. Add `aof-disable-auto-gc` configuration. By default we're automatically deleting HISTORY type AOFs. It also gives users the opportunity to preserve the history AOFs. just for testing use now. 8. Add AOFRW limiting measure. When the AOFRW failures reaches the threshold (3 times now), we will delay the execution of the next AOFRW by 1 minute. If the next AOFRW also fails, it will be delayed by 2 minutes. The next is 4, 8, 16, the maximum delay is 60 minutes (1 hour). During the limit period, we can still use the 'bgrewriteaof' command to execute AOFRW immediately. 9. Support upgrade (load) data from old version redis. 10. Add `appenddirname` configuration, as the directory name of the append only files. All AOF files and manifest file will be placed in this directory. 11. Only the last AOF file (BASE or INCR) can be truncated. Otherwise redis will exit even if `aof-load-truncated` is enabled. Co-authored-by:
Oran Agra <oran@redislabs.com>
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Meir Shpilraien (Spielrein) authored
OOM Error did not raise on functions due to a bug. Added test to verify the fix.
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Madelyn Olson authored
Implement the ability for cluster nodes to advertise their location with extension messages.
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Harkrishn Patro authored
This commit implements a sharded pubsub implementation based off of shard channels. Co-authored-by:
Harkrishn Patro <harkrisp@amazon.com> Co-authored-by:
Madelyn Olson <madelyneolson@gmail.com>
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- 02 Jan, 2022 4 commits
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yoav-steinberg authored
Since #9166 we have an assertion here to make sure replica clients don't write anything to their buffer. But in reality a replica may attempt write data to it's buffer simply by sending a command on the replication link. This command in most cases will be rejected since #8868 but it'll still generate an error. Actually the only valid command to send on a replication link is 'REPCONF ACK` which generates no response. We want to keep the design so that replicas can send commands but we need to avoid any situation where we start putting data in their response buffers, especially since they aren't used anymore. This PR makes sure to disconnect a rogue client which generated a write on the replication link that cause something to be written to the response buffer. To recreate the bug this fixes simply connect via telnet to a redis server and write sync\r\n wait for the the payload to be written and then write any command (valid or invalid), such as ping\r\n on the telnet connection. It'll crash the server.
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Joey from AWS authored
Report slot to keys map size in MEMORY STATS in cluster mode Report dictMetadataSize in MEMORY USAGE command as well
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Viktor Söderqvist authored
To avoid data loss, this commit adds a grace period for lagging replicas to catch up the replication offset. Done: * Wait for replicas when shutdown is triggered by SIGTERM and SIGINT. * Wait for replicas when shutdown is triggered by the SHUTDOWN command. A new blocked client type BLOCKED_SHUTDOWN is introduced, allowing multiple clients to call SHUTDOWN in parallel. Note that they don't expect a response unless an error happens and shutdown is aborted. * Log warning for each replica lagging behind when finishing shutdown. * CLIENT_PAUSE_WRITE while waiting for replicas. * Configurable grace period 'shutdown-timeout' in seconds (default 10). * New flags for the SHUTDOWN command: - NOW disables the grace period for lagging replicas. - FORCE ignores errors writing the RDB or AOF files which would normally prevent a shutdown. - ABORT cancels ongoing shutdown. Can't be combined with other flags. * New field in the output of the INFO command: 'shutdown_in_milliseconds'. The value is the remaining maximum time to wait for lagging replicas before finishing the shutdown. This field is present in the Server section **only** during shutdown. Not directly related: * When shutting down, if there is an AOF saving child, it is killed **even** if AOF is disabled. This can happen if BGREWRITEAOF is used when AOF is off. * Client pause now has end time and type (WRITE or ALL) per purpose. The different pause purposes are *CLIENT PAUSE command*, *failover* and *shutdown*. If clients are unpaused for one purpose, it doesn't affect client pause for other purposes. For example, the CLIENT UNPAUSE command doesn't affect client pause initiated by the failover or shutdown procedures. A completed failover or a failed shutdown doesn't unpause clients paused by the CLIENT PAUSE command. Notes: * DEBUG RESTART doesn't wait for replicas. * We already have a warning logged when a replica disconnects. This means that if any replica connection is lost during the shutdown, it is either logged as disconnected or as lagging at the time of exit. Co-authored-by:
Oran Agra <oran@redislabs.com>
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yoav-steinberg authored
This is needed in order to ease the deployment of functions for ephemeral cases, where user needs to spin up a server with functions pre-loaded. #### Details: * Added `--functions-rdb` option to _redis-cli_. * Functions only rdb via `REPLCONF rdb-filter-only functions`. This is a placeholder for a space separated inclusion filter for the RDB. In the future can be `REPLCONF rdb-filter-only "functions db:3 key-patten:user*"` and a complementing `rdb-filter-exclude` `REPLCONF` can also be added. * Handle "slave requirements" specification to RDB saving code so we can use the same RDB when different slaves express the same requirements (like functions-only) and not share the RDB when their requirements differ. This is currently just a flags `int`, but can be extended to a more complex structure with various filter fields. * make sure to support filters only in diskless replication mode (not to override the persistence file), we do that by forcing diskless (even if disabled by config) other changes: * some refactoring in rdb.c (extract portion of a big function to a sub-function) * rdb_key_save_delay used in AOFRW too * sendChildInfo takes the number of updated keys (incremental, rather than absolute) Co-authored-by:
Oran Agra <oran@redislabs.com>
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- 31 Dec, 2021 2 commits
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Madelyn Olson authored
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sundb authored
Now if redis is still loading when we receive sigterm, we will wait for the loading to reach the event loop (once in 2mb) before actually shutting down. See #10003. This change caused valgrind CI to fail. See https://github.com/redis/redis/runs/4662901673?check_suite_focus=true This pr is mainly to solve the problem that redis process cannot be exited normally. When the master is disconnected, if repl is processing diskless loading and using `connRead` to read data from master, it may enter an infinite retry state, which does not handle `connRead` returning 0(master connection disconnected).
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- 30 Dec, 2021 3 commits
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Viktor Söderqvist authored
These exist for quite some time, and are no longer experimental
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Binbin authored
There are two changes in this commit: 1. Add -X option to redis-cli. Currently `-x` can only be used to provide the last argument, so you can do `redis-cli dump keyname > key.dump`, and then do `redis-cli -x restore keyname 0 < key.dump`. But what if you want to add the replace argument (which comes last?). oran suggested adding such usage: `redis-cli -X <tag> restore keyname <tag> replace < key.dump` i.e. you're able to provide a string in the arguments that's gonna be substituted with the content from stdin. Note that the tag name should not conflict with others non-replaced args. And the -x and -X options are conflicting. Some usages: ``` [root]# echo mypasswd | src/redis-cli -X passwd_tag mset username myname password passwd_tag OK [root]# echo username > username.txt [root]# head -c -1 username.txt | src/redis-cli -X name_tag mget name_tag password 1) "myname" 2) "mypasswd\n" ``` 2. Handle the combination of both `-x` and `--cluster` or `-X` and `--cluster` Extend the broadcast option to receive the last arg or <tag> arg from the stdin. Now we can use `redis-cli -x --cluster call <host>:<port> cmd`, or `redis-cli -X <tag> --cluster call <host>:<port> cmd <tag>`. (support part of #9899)
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Viktor Söderqvist authored
Add blank before lists, so that they will be rendered as lists. Commands RM_GetCommand and RM_CreateSubcommand were added in #9656.
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- 29 Dec, 2021 1 commit
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Itamar Haber authored
Add missing information about commands, mainly from reviewing redis-doc and removing the metadata from it (https://github.com/redis/redis-doc/pull/1722) * Reintroduces CLUSTER S****S (supported by Redis) but missing from the JSON / docs (related? #9675). Note that without that json file, the command won't work (breaking change) * Adds the `replicas` argument (exists in Redis) to `CLIENT KILL`. * Adds `history` entries to several commands based on redis-doc's man pages. * Adds `since` to applicable command arguments based on `history` (this basically makes some of `history` redundant - perhaps at a later stage). * Uses proper semantic versioning in all version references. * Also removes `geoencodeCommand` and `geodecodeCommand` header declarations per b96af595.
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- 28 Dec, 2021 3 commits
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perryitay authored
on the signal handler we are enabling server.shutdown_asap flag instead of just doing `exit()`, and then catch it on the whileBlockedCron() where we prepare for shutdown correctly. this is a more ore organized and safe termination, the old approach was missing these for example: 1. removal of the pidfile 2. shutdown event to modules
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guybe7 authored
Preventing COFIG SET maxmemory from propagating is just the tip of the iceberg. Module that performs a write operation in a notification can cause any command to be propagated, based on server.dirty We need to come up with a better solution.
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David CARLIER authored
Co-authored-by:
Yossi Gottlieb <yossigo@gmail.com>
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- 27 Dec, 2021 1 commit
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Itamar Haber authored
Following #9656, this script generates a "commands.json" file from the output of the new COMMAND. The output of this script is used in redis/redis-doc#1714 and by redis/redis-io#259. This also converts a couple of rogue dashes (in 'key-specs' and 'multiple-token' flags) to underscores (continues #9959).
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- 26 Dec, 2021 3 commits
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Binbin authored
`zslInsert` with a NAN score will crash the server. This one found by the `corrupt-dump-fuzzer`.
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Meir Shpilraien (Spielrein) authored
Follow the conclusions to support Functions in redis cluster (#9899) Added 2 new FUNCTION sub-commands: 1. `FUNCTION DUMP` - dump a binary payload representation of all the functions. 2. `FUNCTION RESTORE <PAYLOAD> [FLUSH|APPEND|REPLACE]` - give the binary payload extracted using `FUNCTION DUMP`, restore all the functions on the given payload. Restore policy can be given to control how to handle existing functions (default is APPEND): * FLUSH: delete all existing functions. * APPEND: appends the restored functions to the existing functions. On collision, abort. * REPLACE: appends the restored functions to the existing functions. On collision, replace the old function with the new function. Modify `redis-cli --cluster add-node` to use `FUNCTION DUMP` to get existing functions from one of the nodes in the cluster, and `FUNCTION RESTORE` to load the same set of functions to the new node. `redis-cli` will execute this step before sending the `CLUSTER MEET` command to the new node. If `FUNCTION DUMP` returns an error, assume the current Redis version do not support functions and skip `FUNCTION RESTORE`. If `FUNCTION RESTORE` fails, abort and do not send the `CLUSTER MEET` command. If the new node already contains functions (before the `FUNCTION RESTORE` is sent), abort and do not add the node to the cluster. Test was added to verify `redis-cli --cluster add-node` works as expected.
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Meir Shpilraien (Spielrein) authored
Use case insensitive string comparison for function names (like we do for commands and configs) In addition, add verification that the functions only use the following characters: [a-zA-Z0-9_]
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- 23 Dec, 2021 1 commit
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Yuta Hongo authored
Introduce `redis-cli --json` option. CSV doesn't support Map type, then parsing SLOWLOG or HMSET with multiple args are not helpful. By default the `--json` implies RESP3, which makes it much more useful, and a `-2` option was added to force RESP2. When `HELLO 3` fails, it prints a warning message (which can be silenced with `-2`). If a user passed `-3` explicitly, the non-interactive mode will also exit with error without running the command, while in interactive session it'll keep running after printing the warning. JSON output would be helpful to parse Redis replies with other tools like jq. ``` redis-cli --json slowlog get | jq [ [ 1, 1639677545, 322362, [ "HMSET", "dummy-key", "field1", "123,456,789... (152 more bytes)", "field2", "111,222,333... (140 more bytes)", "field3", "... (349 more arguments)" ], "127.0.0.1:49312", "" ] ] ```
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- 22 Dec, 2021 3 commits
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guybe7 authored
The mess: Some parts use alsoPropagate for late propagation, others using an immediate one (propagate()), causing edge cases, ugly/hacky code, and the tendency for bugs The basic idea is that all commands are propagated via alsoPropagate (i.e. added to a list) and the top-most call() is responsible for going over that list and actually propagating them (and wrapping them in MULTI/EXEC if there's more than one command). This is done in the new function, propagatePendingCommands. Callers to propagatePendingCommands: 1. top-most call() (we want all nested call()s to add to the also_propagate array and just the top-most one to propagate them) - via `afterCommand` 2. handleClientsBlockedOnKeys: it is out of call() context and it may propagate stuff - via `afterCommand`. 3. handleClientsBlockedOnKeys edge case: if the looked-up key is already expired, we will propagate the expire but will not unblock any client so `afterCommand` isn't called. in that case, we have to propagate the deletion explicitly. 4. cron stuff: active-expire and eviction may also propagate stuff 5. modules: the module API allows to propagate stuff from just about anywhere (timers, keyspace notifications, threads). I could have tried to catch all the out-of-call-context places but it seemed easier to handle it in one place: when we free the context. in the spirit of what was done in call(), only the top-most freeing of a module context may cause propagation. 6. modules: when using a thread-safe ctx it's not clear when/if the ctx will be freed. we do know that the module must lock the GIL before calling RM_Replicate/RM_Call so we propagate the pending commands when releasing the GIL. A "known limitation", which were actually a bug, was fixed because of this commit (see propagate.tcl): When using a mix of RM_Call with `!` and RM_Replicate, the command would propagate out-of-order: first all the commands from RM_Call, and then the ones from RM_Replicate Another thing worth mentioning is that if, in the past, a client would issue a MULTI/EXEC with just one write command the server would blindly propagate the MULTI/EXEC too, even though it's redundant. not anymore. This commit renames propagate() to propagateNow() in order to cause conflicts in pending PRs. propagatePendingCommands is the only caller of propagateNow, which is now a static, internal helper function. Optimizations: 1. alsoPropagate will not add stuff to also_propagate if there's no AOF and replicas 2. alsoPropagate reallocs also_propagagte exponentially, to save calls to memmove Bugfixes: 1. CONFIG SET can create evictions, sending notifications which can cause to dirty++ with modules. we need to prevent it from propagating to AOF/replicas 2. We need to set current_client in RM_Call. buggy scenario: - CONFIG SET maxmemory, eviction notifications, module hook calls RM_Call - assertion in lookupKey crashes, because current_client has CONFIG SET, which isn't CMD_WRITE 3. minor: in eviction, call propagateDeletion after notification, like active-expire and all commands (we always send a notification before propagating the command)
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Oran Agra authored
## background Till now CONFIG SET was blocked during loading. (In the not so distant past, GET was disallowed too) We recently (not released yet) added an async-loading mode, see #9323, and during that time it'll serve CONFIG SET and any other command. And now we realized (#9770) that some configs, and commands are dangerous during async-loading. ## changes * Allow most CONFIG SET during loading (both on async-loading and normal loading) * Allow CONFIG REWRITE and CONFIG RESETSTAT during loading * Block a few config during loading (`appendonly`, `repl-diskless-load`, and `dir`) * Block a few commands during loading (list below) ## the blocked commands: * SAVE - obviously we don't wanna start a foregreound save during loading 8-) * BGSAVE - we don't mind to schedule one, but we don't wanna fork now * BGREWRITEAOF - we don't mind to schedule one, but we don't wanna fork now * MODULE - we obviously don't wanna unload a module during replication / rdb loading (MODULE HELP and MODULE LIST are not blocked) * SYNC / PSYNC - we're in the middle of RDB loading from master, must not allow sync requests now. * REPLICAOF / SLAVEOF - we're in the middle of replicating, maybe it makes sense to let the user abort it, but he couldn't do that so far, i don't wanna take any risk of bugs due to odd state. * CLUSTER - only allow [HELP, SLOTS, NODES, INFO, MYID, LINKS, KEYSLOT, COUNTKEYSINSLOT, GETKEYSINSLOT, RESET, REPLICAS, COUNT_FAILURE_REPORTS], for others, preserve the status quo ## other fixes * processEventsWhileBlocked had an issue when being nested, this could happen with a busy script during async loading (new), but also in a busy script during AOF loading (old). this lead to a crash in the scenario described in #6988
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Hongcai Ren authored
when count is 0, return NULL
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- 21 Dec, 2021 3 commits
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Meir Shpilraien (Spielrein) authored
The issue with MAY_REPLICATE is that all automatic mechanisms to handle write commands will not work. This require have a special treatment for: * Not allow those commands to be executed on RO replica. * Allow those commands to be executed on RO replica from primary connection. * Allow those commands to be executed on the RO replica from AOF. By setting those commands as WRITE commands we are getting all those properties from Redis. Test was added to verify that those properties work as expected. In addition, rearrange when and where functions are flushed. Before this PR functions were flushed manually on `rdbLoadRio` and cleaned manually on failure. This contradicts the assumptions that functions are data and need to be created/deleted alongside with the data. A side effect of this, for example, `debug reload noflush` did not flush the data but did flush the functions, `debug loadaof` flush the data but not the functions. This PR move functions deletion into `emptyDb`. `emptyDb` (renamed to `emptyData`) will now accept an additional flag, `NOFUNCTIONS` which specifically indicate that we do not want to flush the functions (on all other cases, functions will be flushed). Used the new flag on FLUSHALL and FLUSHDB only! Tests were added to `debug reload` and `debug loadaof` to verify that functions behave the same as the data. Notice that because now functions will be deleted along side with the data we can not allow `CLUSTER RESET` to be called from within a function (it will cause the function to be released while running), this PR adds `NO_SCRIPT` flag to `CLUSTER RESET` so it will not be possible to be called from within a function. The other cluster commands are allowed from within a function (there are use-cases that uses `GETKEYSINSLOT` to iterate over all the keys on a given slot). Tests was added to verify `CLUSTER RESET` is denied from within a script. Another small change on this PR is that `RDBFLAGS_ALLOW_DUP` is also applicable on functions. When loading functions, if this flag is set, we will replace old functions with new ones on collisions.
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yancz2000 authored
Let's you see which version of redis this tool is part of (similarly to redis-cli and redis-benchmark)
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zhugezy authored
# Background The main goal of this PR is to remove relevant logics on Lua script verbatim replication, only keeping effects replication logic, which has been set as default since Redis 5.0. As a result, Lua in Redis 7.0 would be acting the same as Redis 6.0 with default configuration from users' point of view. There are lots of reasons to remove verbatim replication. Antirez has listed some of the benefits in Issue #5292: >1. No longer need to explain to users side effects into scripts. They can do whatever they want. >2. No need for a cache about scripts that we sent or not to the slaves. >3. No need to sort the output of certain commands inside scripts (SMEMBERS and others): this both simplifies and gains speed. >4. No need to store scripts inside the RDB file in order to startup correctly. >5. No problems about evicting keys during the script execution. When looking back at Redis 5.0, antirez and core team decided to set the config `lua-replicate-commands yes` by default instead of removing verbatim replication directly, in case some bad situations happened. 3 years later now before Redis 7.0, it's time to remove it formally. # Changes - configuration for lua-replicate-commands removed - created config file stub for backward compatibility - Replication script cache removed - this is useless under script effects replication - relevant statistics also removed - script persistence in RDB files is also removed - Propagation of SCRIPT LOAD and SCRIPT FLUSH to replica / AOF removed - Deterministic execution logic in scripts removed (i.e. don't run write commands after random ones, and sorting output of commands with random order) - the flags indicating which commands have non-deterministic results are kept as hints to clients. - `redis.replicate_commands()` & `redis.set_repl()` changed - now `redis.replicate_commands()` does nothing and return an 1 - ...and then `redis.set_repl()` can be issued before `redis.replicate_commands()` now - Relevant TCL cases adjusted - DEBUG lua-always-replicate-commands removed # Other changes - Fix a recent bug comparing CLIENT_ID_AOF to original_client->flags instead of id. (introduced in #9780) Co-authored-by:
Oran Agra <oran@redislabs.com>
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- 20 Dec, 2021 1 commit
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Binbin authored
Recent PRs have introduced some failures, this commit try to fix these CI failures. Here are the changes: 1. Enable debug-command in sentinel test. ``` Master reboot in very short time: ERR DEBUG command not allowed. If the enable-debug-command option is set to "local", you can run it from a local connection, otherwise you need to set this option in the configuration file, and then restart the server. ``` 2. Enable protected-config in sentinel test. ``` SDOWN is triggered by misconfigured instance replying with errors: ERR CONFIG SET failed (possibly related to argument 'dir') - can't set protected config ``` 3. Enable debug-command in cluster test. ``` Verify slaves consistency: ERR DEBUG command not allowed. If the enable-debug-command option is set to "local", you can run it from a local connection, otherwise you need to set this option in the configuration file, and then restart the server. ``` 4. quicklist fill should be signed int. The reason for the modification is to eliminate the warning. Modify `int fill: QL_FILL_BITS` to `signed int fill: QL_FILL_BITS` The first three were introduced at #9920 (same issue). And the last one was introduced at #9962.
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- 19 Dec, 2021 2 commits
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Binbin authored
1. Local variable 's' hides a parameter of the same name. ``` int anetTcpAccept(char *err, int s, char *ip, size_t ip_len, int *port) { if ((fd = anetGenericAccept(err,s,(struct sockaddr*)&sa,&salen)) == ANET_ERR){} } ``` Change the parameter name from `s` to `serversock`, also unified with the header file definition. 2. Comparison is always false because i <= 48. ``` for (i = 0; i < DICT_STATS_VECTLEN-1; i++) { // i < 49 (i == DICT_STATS_VECTLEN-1)?">= ":"", // i == 49 } ``` `i == DICT_STATS_VECTLEN-1` always result false, it is a dead code. 3. Empty block without comment. `else if (!strcasecmp(opt,"ch")) {}`, add a comment to avoid warnings. 4. Bit field fill of type int should have explicitly unsigned integral, explicitly signed integral, or enumeration type. Modify `int fill: QL_FILL_BITS;` to `unsigned int fill: QL_FILL_BITS;` 5. The result of this call to reconnectingRedisCommand is not checked for null, but 80% of calls to reconnectingRedisCommand check for null. Just a cleanup job like others.
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YaacovHazan authored
Block sensitive configs and commands by default. * `enable-protected-configs` - block modification of configs with the new `PROTECTED_CONFIG` flag. Currently we add this flag to `dbfilename`, and `dir` configs, all of which are non-mutable configs that can set a file redis will write to. * `enable-debug-command` - block the `DEBUG` command * `enable-module-command` - block the `MODULE` command These have a default value set to `no`, so that these features are not exposed by default to client connections, and can only be set by modifying the config file. Users can change each of these to either `yes` (allow all access), or `local` (allow access from local TCP connections and unix domain connections) Note that this is a **breaking change** (specifically the part about MODULE command being disabled by default). I.e. we don't consider DEBUG command being blocked as an issue (people shouldn't have been using it), and the few configs we protected are unlikely to have been set at runtime anyway. On the other hand, it's likely to assume some users who use modules, load them from the config file anyway. Note that's the whole point of this PR, for redis to be more secure by default and reduce the attack surface on innocent users, so secure defaults will necessarily mean a breaking change.
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- 18 Dec, 2021 1 commit
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guybe7 authored
some languages can build a json-like object by parsing a textual json, but it works poorly when attributes contain hyphens example in JS: ``` let j = JSON.parse(json) j['key-name'] <- works j.key-name <= illegal syntax ```
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- 17 Dec, 2021 1 commit
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ny0312 authored
Introduce memory management on cluster link buffers: * Introduce a new `cluster-link-sendbuf-limit` config that caps memory usage of cluster bus link send buffers. * Introduce a new `CLUSTER LINKS` command that displays current TCP links to/from peers. * Introduce a new `mem_cluster_links` field under `INFO` command output, which displays the overall memory usage by all current cluster links. * Introduce a new `total_cluster_links_buffer_limit_exceeded` field under `CLUSTER INFO` command output, which displays the accumulated count of cluster links freed due to `cluster-link-sendbuf-limit`.
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- 16 Dec, 2021 4 commits
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Meir Shpilraien (Spielrein) authored
Added `FUNCTION FLUSH` command. The new sub-command allows delete all the functions. An optional `[SYNC|ASYNC]` argument can be given to control whether or not to flush the functions synchronously or asynchronously. if not given the default flush mode is chosen by `lazyfree-lazy-user-flush` configuration values. Add the missing `functions.tcl` test to the list of tests that are executed in test_helper.tcl, and call FUNCTION FLUSH in between servers in external mode
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guybe7 authored
Sort the sub-commands so that every time we execute the script it generates the exact same results. This will case less merge conflicts if two PRs edit different json files. also: * make the script agnostic to where it is executed (more flexible). * add documentation about commands.c and the json files in the readme. Co-authored-by:
Oran Agra <oran@redislabs.com>
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yoav-steinberg authored
Support doing `CONFIG GET <x> <y> <z>`, each of them can also be a pattern with wildcards. This avoids duplicates in the result by looping over the configs and for each once checking all the patterns, once a match is found for a pattern we move on to the next config.
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ranshid authored
* Fix too long unix domain socket file path Co-authored-by:
Madelyn Olson <madelyneolson@gmail.com>
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- 15 Dec, 2021 1 commit
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guybe7 authored
Delete the hardcoded command table and replace it with an auto-generated table, based on a JSON file that describes the commands (each command must have a JSON file). These JSON files are the SSOT of everything there is to know about Redis commands, and it is reflected fully in COMMAND INFO. These JSON files are used to generate commands.c (using a python script), which is then committed to the repo and compiled. The purpose is: * Clients and proxies will be able to get much more info from redis, instead of relying on hard coded logic. * drop the dependency between Redis-user and the commands.json in redis-doc. * delete help.h and have redis-cli learn everything it needs to know just by issuing COMMAND (will be done in a separate PR) * redis.io should stop using commands.json and learn everything from Redis (ultimately one of the release artifacts should be a large JSON, containing all the information about all of the commands, which will be generated from COMMAND's reply) * the byproduct of this is: * module commands will be able to provide that info and possibly be more of a first-class citizens * in theory, one may be able to generate a redis client library for a strictly typed language, by using this info. ### Interface changes #### COMMAND INFO's reply change (and arg-less COMMAND) Before this commit the reply at index 7 contained the key-specs list and reply at index 8 contained the sub-commands list (Both unreleased). Now, reply at index 7 is a map of: - summary - short command description - since - debut version - group - command group - complexity - complexity string - doc-flags - flags used for documentation (e.g. "deprecated") - deprecated-since - if deprecated, from which version? - replaced-by - if deprecated, which command replaced it? - history - a list of (version, what-changed) tuples - hints - a list of strings, meant to provide hints for clients/proxies. see https://github.com/redis/redis/issues/9876 - arguments - an array of arguments. each element is a map, with the possibility of nesting (sub-arguments) - key-specs - an array of keys specs (already in unstable, just changed location) - subcommands - a list of sub-commands (already in unstable, just changed location) - reply-schema - will be added in the future (see https://github.com/redis/redis/issues/9845) more details on these can be found in https://github.com/redis/redis-doc/pull/1697 only the first three fields are mandatory #### API changes (unreleased API obviously) now they take RedisModuleCommand opaque pointer instead of looking up the command by name - RM_CreateSubcommand - RM_AddCommandKeySpec - RM_SetCommandKeySpecBeginSearchIndex - RM_SetCommandKeySpecBeginSearchKeyword - RM_SetCommandKeySpecFindKeysRange - RM_SetCommandKeySpecFindKeysKeynum Currently, we did not add module API to provide additional information about their commands because we couldn't agree on how the API should look like, see https://github.com/redis/redis/issues/9944 . ### Somehow related changes 1. Literals should be in uppercase while placeholder in lowercase. Now all the GEO* command will be documented with M|KM|FT|MI and can take both lowercase and uppercase ### Unrelated changes 1. Bugfix: no_madaory_keys was absent in COMMAND's reply 2. expose CMD_MODULE as "module" via COMMAND 3. have a dedicated uint64 for ACL categories (instead of having them in the same uint64 as command flags) Co-authored-by:
Itamar Haber <itamar@garantiadata.com>
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