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Return destination client presence when inserting messages

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This commit is contained in:
Jon Chambers
2024-11-07 16:10:30 -05:00
committed by Jon Chambers
parent 1fa31b3974
commit eeeb565313
5 changed files with 73 additions and 23 deletions
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5
service/src/main/resources/lua/insert_item.lua
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@@ -4,9 +4,11 @@
local queueKey = KEYS[1] -- sorted set of Envelopes for a device, by queue-local ID
local queueMetadataKey = KEYS[2] -- hash of message GUID to queue-local IDs
local queueTotalIndexKey = KEYS[3] -- sorted set of all queues in the shard, by timestamp of oldest message
local eventChannelKey = KEYS[4] -- pub/sub channel for message availability events
local message = ARGV[1] -- [bytes] the Envelope to insert
local currentTime = ARGV[2] -- [number] the message timestamp, to sort the queue in the queueTotalIndex
local guid = ARGV[3] -- [string] the message GUID
local eventPayload = ARGV[4] -- [bytes] a protobuf payload for a "message available" pub/sub event
if redis.call("HEXISTS", queueMetadataKey, guid) == 1 then
return tonumber(redis.call("HGET", queueMetadataKey, guid))
@@ -21,4 +23,5 @@ redis.call("EXPIRE", queueKey, 3974400) -- 46 days
redis.call("EXPIRE", queueMetadataKey, 3974400) -- 46 days
redis.call("ZADD", queueTotalIndexKey, "NX", currentTime, queueKey)
return messageId
return redis.call("SPUBLISH", eventChannelKey, eventPayload) > 0