* feat: add slave_repl_offset to the replication section.
In Valkey slave_repl_offset denotes the replication offset on replica site during stable sync phase.
During fullsync phase it appears with 0 value.
In Dragonfly this field appears only after full sync has completed, thus it allows
to check whether Dragonfly reached stable sync phase. The value of this field describes the cumulative progress
of all the replication flows and it does not directly correspond to master side metrics.
In addition, this PR fixes the bug in wait_available_async() function in our replication tests.
This function is intended to wait until a replica reaches stable state and it did by sending pings until they do not
respond with LOADING error, hence the assumption is that the replica is in full sync state already.
However it can happen that master_link_status is "up" but replica has not reached full sync state, and the PING will succeed
just because wait_available_async() was called before full sync started. The whole approach of polling the state is fragile.
Now we use `slave_repl_offset` explicitly to see if the replica reaches stable state.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: simplify wait_available_async
* chore: comments
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: enable experimental_new_io by default.
It has been running for weeks with the flag on, so enabled it also for community.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
Signed-off-by: Vladislav Oleshko <vlad@dragonflydb.io>
Co-authored-by: Vladislav Oleshko <vlad@dragonflydb.io>
* fix: xreadgroup replies as a map for RESP3
Moreover, it returns data for all the strings, irrespective whether they have results or not
(unlike with XREAD)
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* fix: properly handle xpending with 0 results
Also reject ENTRIESREAD instead of silently accepting it.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* fix: JSON.STRAPPEND
JSON.STRAPPEND was completely broken.
First, it accepts exactly 3 arguments, i.e. a single value to append.
Secondly, the value must be a json string, not the regular string. Meaning it must be in double quotes.
So, before we parsed: `JSON.STRAPPEND key $.field bar` and now we parse:
`JSON.STRAPPEND key $.field "bar"`
In addition fixed the behavior of JSON.STRLEN to return "no such key" error in case the
json key does not exist and path is specified.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
Stop supporting DflyVersion::VER0 from more than a year ago.
In addition, rename Metrics fields to make them more clear
General improvements and fix the reconnect metric.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: improve compatibility of set and ping commands
smismember should return an array of longs and not array of strings.
ping in subscribe mode returns an array for resp2.
Also, fix double rounding for legacy float mode.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
1. Fix corner cases around non existing keys
2. Fix matching logic for * glob, as well as '' glob.
3. Improve SORT option parsing.
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
1. strlen should return 0 for non existing types.
2. reject both EX and PX options in SET
3. prevent overflow of expiry time that is too large
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
* chore: allow limiting pipelining queue by length
We already allow limiting the queue by memory usage but it also makes sense to limit by depth,
so that in extreme cases we would provide backpressure back to client connections. Otherwise if we parse and read everything,
clients do not have a sense of how loaded the connection is on the server side.
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Signed-off-by: Roman Gershman <roman@dragonflydb.io>
1. Fix the bug of computing incorrectly the weight index in OpInter
2. Remove code duplication and factor out the parsing code from OpInter and OpUnion into PrepareWeightedSets
3. Implement TODO and support union of zsets and sets, which has already been implemented for ZINTER.
fixes#3553
Signed-off-by: Roman Gershman <roman@dragonflydb.io>
