This is a stripped down version of supporting the memcache meta requests.
a. Not all meta flags are supported, but TTL, flags, arithmetics are supported.
b. does not include reply support.
c. does not include new semantics that are not part of the older, ascii protocol.
The parser interface has not changed significantly, and the meta commands are emulated
using the old, high level commands like ADD,REPLACE, INCR etc.
See https://raw.githubusercontent.com/memcached/memcached/refs/heads/master/doc/protocol.txt for more details
regarding the meta commands spec.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
fix(search_family): Support multiple fields in SORTBY option in the FT.AGGREGATE command
fixes dragonfly#3631
Signed-off-by: Stepan Bagritsevich <stefan@dragonflydb.io>
The problem: apparently, jsoncons uses strtod by default when parsing doubles.
On some platforms (alpine/musl) this function uses lots of stack, which potentially can lead to stack corruption.
This PR configures jsoncons to use std::from_chars that is more efficient and less stack hungry.
The single include point to consume jsoncons/json.hpp should be "core/json_object.h"
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
1. Run CI/Regression tests with HELIO_STACK_CHECK=4096.
This will crash if a fiber stack usage goes below this limit.
2. Increase shard queue stack size to 64KB
3. Increase fiber stack size to 40KB on Debug builds.
4. Updated helio has some changes around the TLS socket code.
In addition we add a helper script to generate self-signed certificates helpful for local development work.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
chore: add content-type for metrics response.
Also, update the local stack to use prometheus 3.0
Finally, hex-escape arguments when logging an error for a command.
Fixes#4277
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
fix: do not check-fail OpRestore
In some rare cases we reach inconsistent state inside OpRestore where a key already exists, though it should not.
In that case log the error instead of crashing the server. In addition, we update the existing entry to the latest restored value.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: add ability to track connections stuck at send
Add send_delay_seconds/send_delay_ms metrics.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
Signed-off-by: Roman Gershman <romange@gmail.com>
Co-authored-by: Shahar Mike <chakaz@users.noreply.github.com>
Before: if socket data arrived in small bits, then CheckForHttpProto would grow
io_buf_ capacity exponentially with each iteration. For example, test_match_http test
easily causes OOM.
This PR ensures that there is always a buffer available - but it grows linearly with the input size.
Currently, the total input in CheckForHttpProto is limited to 1024.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: factor out rdb_load utilities into separate files
rdb_load.cc is huge and contains many auxillary classes.
This PR moves DecompressImpl and ErrorRdb code into detail/
It also fixes minor bugs around error conditions with de-compression:
a. Do not check-fail on invalid opcode and return error_code instead.
b. Print correctly LZ4 errors.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: fixes
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: improve parser state machine
1. Separate argument type parsing from argument parsing itself.
2. Handle strings of length 1.
This is done in preparation of improving the parser contract -
so that when it returns INPUT_PENDING, it consumes the entire input.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: add active time to stream consumers
Adjust XINFO command to output active-time property.
Store active-time and switch to RDB_TYPE_STREAM_LISTPACKS_3 if FLAGS_stream_rdb_encode_v2
is enabled.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
