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backend/node_modules/bullmq/dist/esm/commands/moveToWaitingChildren-7.lua

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+--[[
+  Moves job from active to waiting children set.
+
+  Input:
+    KEYS[1] active key
+    KEYS[2] wait-children key
+    KEYS[3] job key
+    KEYS[4] job dependencies key
+    KEYS[5] job unsuccessful key
+    KEYS[6] stalled key
+    KEYS[7] events key
+
+    ARGV[1] token
+    ARGV[2] child key
+    ARGV[3] timestamp
+    ARGV[4] jobId
+    ARGV[5] prefix
+
+  Output:
+    0 - OK
+    1 - There are not pending dependencies.
+   -1 - Missing job.
+   -2 - Missing lock
+   -3 - Job not in active set
+   -9 - Job has failed children
+]]
+local rcall = redis.call
+local activeKey = KEYS[1]
+local waitingChildrenKey = KEYS[2]
+local jobKey = KEYS[3]
+local jobDependenciesKey = KEYS[4]
+local jobUnsuccessfulKey = KEYS[5]
+local stalledKey = KEYS[6]
+local eventStreamKey = KEYS[7]
+local token = ARGV[1]
+local timestamp = ARGV[3]
+local jobId = ARGV[4]
+
+--- Includes
+--- @include "includes/removeLock"
+
+local function removeJobFromActive(activeKey, stalledKey, jobKey, jobId,
+    token)
+  local errorCode = removeLock(jobKey, stalledKey, token, jobId)
+  if errorCode < 0 then
+    return errorCode
+  end
+
+  local numRemovedElements = rcall("LREM", activeKey, -1, jobId)
+
+  if numRemovedElements < 1 then
+    return -3
+  end
+
+  return 0
+end
+
+local function moveToWaitingChildren(activeKey, waitingChildrenKey, stalledKey, eventStreamKey,
+    jobKey, jobId, timestamp, token)
+  local errorCode = removeJobFromActive(activeKey, stalledKey, jobKey, jobId, token)
+  if errorCode < 0 then
+    return errorCode
+  end
+
+  local score = tonumber(timestamp)
+
+  rcall("ZADD", waitingChildrenKey, score, jobId)
+  rcall("XADD", eventStreamKey, "*", "event", "waiting-children", "jobId", jobId, 'prev', 'active')
+
+  return 0
+end
+
+if rcall("EXISTS", jobKey) == 1 then
+  if rcall("ZCARD", jobUnsuccessfulKey) ~= 0 then
+    return -9
+  else
+    if ARGV[2] ~= "" then
+      if rcall("SISMEMBER", jobDependenciesKey, ARGV[2]) ~= 0 then
+        return moveToWaitingChildren(activeKey, waitingChildrenKey, stalledKey, eventStreamKey,
+          jobKey, jobId, timestamp, token)
+      end
+  
+      return 1
+    else
+      if rcall("SCARD", jobDependenciesKey) ~= 0 then 
+        return moveToWaitingChildren(activeKey, waitingChildrenKey, stalledKey, eventStreamKey,
+          jobKey, jobId, timestamp, token)
+      end
+  
+      return 1
+    end    
+  end
+end
+
+return -1