updated review code

tests/waku_archive/test_retention_policy.nim

@@ -11,7 +11,7 @@ import
   ../../../waku/waku_core,
   ../../../waku/waku_core/message/digest,
   ../../../waku/waku_archive,
-    ../../../waku/waku_archive/driver/postgres_driver,
+  ../../../waku/waku_archive/driver/postgres_driver,
   ../../../waku/waku_archive/retention_policy,
   ../../../waku/waku_archive/retention_policy/retention_policy_capacity,
   ../../../waku/waku_archive/retention_policy/retention_policy_size,
@@ -57,9 +57,8 @@ suite "Waku Archive - Retention policy":
     ## Then
     let numMessages = (waitFor driver.getMessagesCount()).tryGet()
     check:
-      # Expected number of messages is 120 because
-      # (capacity = 100) + (half of the overflow window = 15) + (5 messages added after after the last delete)
-      # the window size changes when changing `const maxStoreOverflow = 1.3 in sqlite_store
+      # Expected number of messages is 115 because
+      # (capacity = 100) + (half of the overflow window = 15)
       numMessages == 115
 
     ## Cleanup
@@ -68,52 +67,51 @@ suite "Waku Archive - Retention policy":
   test "size retention policy - windowed message deletion":
     ## Given
     let driver = newTestPostgresDriver()
-    let dbEngine = driver.getDbType()
 
     # make sure that the db is empty to before test begins
     let storedMsg = (waitFor driver.getAllMessages()).tryGet()
-    # if there are messages in db, empty them
+    # if there are messages in db, delete them before the test begins
     if storedMsg.len > 0:
       let now = getNanosecondTime(getTime().toUnixFloat())
       require (waitFor driver.deleteMessagesOlderThanTimestamp(ts=now)).isOk()  
       require (waitFor driver.performVacuum()).isOk()
 
-    # in bytes
-    let sizeLimit:int64 = 10422851
-    let excess = 800
+    # get the minimum/empty size of the database
+    let sizeLimit = int64((waitFor driver.getDatabaseSize()).tryGet())
+    let num_messages = 100
+    let retryLimit = 4
 
     let retentionPolicy: RetentionPolicy = SizeRetentionPolicy.init(size=sizeLimit)
     var putFutures = newSeq[Future[ArchiveDriverResult[void]]]()
 
     ## When
-    ##
-
-    # create a number of messages so that the size of the DB overshoots
-    for i in 1..excess:
-        let msg = fakeWakuMessage(payload= @[byte (i*10)], contentTopic=DefaultContentTopic, ts=Timestamp(i))
-        putFutures.add(driver.put(DefaultPubsubTopic, msg, computeDigest(msg), computeMessageHash(DefaultPubsubTopic, msg), msg.timestamp))
+    # create a number of messages to increase DB size
+    for i in 1..num_messages:
+      let msg = fakeWakuMessage(payload= @[byte i], contentTopic=DefaultContentTopic, ts=Timestamp(i))
+      putFutures.add(driver.put(DefaultPubsubTopic, msg, computeDigest(msg), computeMessageHash(DefaultPubsubTopic, msg), msg.timestamp))
 
     # waitFor is used to synchronously wait for the futures to complete.
     discard waitFor allFinished(putFutures)
+    sleep(150)
 
     ## Then
     # calculate the current database size
-    var sizeDB = int64((waitFor driver.getDatabaseSize()).tryGet())
+    let sizeBeforeRetPolicy = int64((waitFor driver.getDatabaseSize()).tryGet())
+    var sizeAfterRetPolicy:int64 = sizeBeforeRetPolicy
+    var retryCounter = 0
 
-    if (sizeDB < sizeLimit):
-      # we put a warning/debug that the size of the DB is less than the limit already
-      echo ("WARNING: DB size is less than the limit. This test may not work as expected")
+    while (sizeAfterRetPolicy >= sizeBeforeRetPolicy)  and (retryCounter < retryLimit):
+      # execute the retention policy
+      require (waitFor retentionPolicy.execute(driver)).isOk()
 
-    require (waitFor retentionPolicy.execute(driver)).isOk()
-
-    # get the updated DB size post vacuum
-    sizeDB = int64((waitFor driver.getDatabaseSize()).tryGet())
+      # get the updated DB size post vacuum
+      sizeAfterRetPolicy = int64((waitFor driver.getDatabaseSize()).tryGet())
+      retryCounter += 1
+      sleep(150)
 
     check:
-      # size of the database is used to check if the storage limit has been preserved
-      # check the current database size with the limitSize provided by the user
-      # it should be lower
-      sizeDB <= sizeLimit
+      # check if the size of the database has been reduced after executing the retention policy
+      sizeAfterRetPolicy < sizeBeforeRetPolicy
 
     ## Cleanup
     (waitFor driver.close()).expect("driver to close")

waku/waku_archive/driver/queue_driver/queue_driver.nim

@@ -85,7 +85,7 @@ proc new*(T: type QueueDriver, capacity: int = QueueDriverDefaultMaxCapacity): T
   return QueueDriver(items: items, capacity: capacity)
 
 method getDbType*(driver: QueueDriver): string =
-    return "sqlite"
+    return "queue"
 
 proc contains*(driver: QueueDriver, index: Index): bool =
   ## Return `true` if the store queue already contains the `index`, `false` otherwise.

waku/waku_archive/retention_policy/retention_policy_capacity.nim

@@ -71,4 +71,12 @@ method execute*(p: CapacityRetentionPolicy,
   (await driver.deleteOldestMessagesNotWithinLimit(limit=p.capacity + p.deleteWindow)).isOkOr:
     return err("deleting oldest messages failed: " & error)
 
+  # perform vacuum
+  let resVaccum = await driver.performVacuum()
+  if resVaccum.isErr():
+    return err("vacuumming failed: " & resVaccum.error)
+
+    # sleep to give it some time to complete vacuuming
+  await sleepAsync(350)
+  
   return ok()

waku/waku_archive/retention_policy/retention_policy_size.nim

@@ -49,41 +49,35 @@ method execute*(p: SizeRetentionPolicy,
 
   ## when db size overshoots the database limit, shread 20% of outdated messages 
   # get size of database
-  var dbSize = (await driver.getDatabaseSize()).valueOr:
+  let dbSize = (await driver.getDatabaseSize()).valueOr:
     return err("failed to get database size: " & $error)
 
   # database size in bytes
-  var totalSizeOfDB: int64 = int64(dbSize)
-  let retryLimit = 2
-  var retryCounter:int = 0
+  let totalSizeOfDB: int64 = int64(dbSize)
 
   if totalSizeOfDB < p.sizeLimit:
     return ok()
-  
-    # NOTE: Using SQLite vacuuming is done manually, we delete a percentage of rows
-    # if vacumming is done automatically then we aim to check DB size periodially for efficient
-    # retention policy implementation.
-  while (totalSizeOfDB > p.sizeLimit) and (retryLimit > retryCounter):
-    # to shread/delete messsges, get the total row/message count
-    let numMessages = (await driver.getMessagesCount()).valueOr:
-      return err("failed to get messages count: " & error)
 
-    # 80% of the total messages are to be kept, delete others
-    let pageDeleteWindow = int(float(numMessages) * DeleteLimit)
+  # NOTE: Using SQLite vacuuming is done manually, we delete a percentage of rows
+  # if vacumming is done automatically then we aim to check DB size periodially for efficient
+  # retention policy implementation.
+  # to shread/delete messsges, get the total row/message count
+  let numMessages = (await driver.getMessagesCount()).valueOr:
+    return err("failed to get messages count: " & error)
 
-    (await driver.deleteOldestMessagesNotWithinLimit(limit=pageDeleteWindow)).isOkOr:
-      return err("deleting oldest messages failed: " & error)
+  # 80% of the total messages are to be kept, delete others
+  let pageDeleteWindow = int(float(numMessages) * DeleteLimit)
+  echo ("deleting oldest messages not within limit: " & $pageDeleteWindow)
 
-    # perform vacuum
-    let resVaccum = await driver.performVacuum()
-    if resVaccum.isErr():
-      return err("vacuumming failed: " & resVaccum.error)
-    # recompute the DB size to check if the size has actually reduced or not
-    
-    dbSize = (await driver.getDatabaseSize()).valueOr:
-      return err("failed to get database size: " & $error)
-    totalSizeOfDB = int64(dbSize)
-    retryCounter += 1
-    sleep(150*retryCounter)
+  (await driver.deleteOldestMessagesNotWithinLimit(limit=pageDeleteWindow)).isOkOr:
+    return err("deleting oldest messages failed: " & error)
+
+  # perform vacuum
+  let resVaccum = await driver.performVacuum()
+  if resVaccum.isErr():
+    return err("vacuumming failed: " & resVaccum.error)
+
+  # sleep to give it some time to complete vacuuming
+  await sleepAsync(350)
 
   return ok()

waku/waku_archive/retention_policy/retention_policy_time.nim

@@ -49,4 +49,12 @@ method execute*(p: TimeRetentionPolicy,
   if res.isErr():
     return err("failed to delete oldest messages: " & res.error)
 
+   # perform vacuum
+  let resVaccum = await driver.performVacuum()
+  if resVaccum.isErr():
+    return err("vacuumming failed: " & resVaccum.error)
+
+    # sleep to give it some time to complete vacuuming
+  await sleepAsync(350)
+  
   return ok()