Chronos v4 Update (v3 Compat Mode) (#814)

* add changes to use chronos v4 in compat mode

* switch chronos to compat fix branch

* use nimbus-build-system with configurable Nim repo

* add missing imports

* add missing await

* bump compat

* pin nim version in Makefile

* add await instead of asyncSpawn to advertisement queue loop

* bump DHT to v0.5.0

* allow error state of `onBatch` to propagate upwards in test code

* pin Nim compiler commit to avoid fetching stale branch

* make CI build against branch head instead of merge

* fix handling of return values in testslotqueue

codex/blockexchange/engine/discovery.nim

@@ -105,8 +105,7 @@ proc advertiseQueueLoop(b: DiscoveryEngine) {.async.} =
       trace "Begin iterating blocks..."
       for c in cids:
         if cid =? await c:
-          b.advertiseBlock(cid)
-          await sleepAsync(100.millis)
+          await b.advertiseBlock(cid)
       trace "Iterating blocks finished."
 
     await sleepAsync(b.advertiseLoopSleep)

codex/blocktype.nim

@@ -31,7 +31,7 @@ import ./codextypes
 export errors, logutils, units, codextypes
 
 type
-  Block* = object of RootObj
+  Block* = ref object of RootObj
     cid*: Cid
     data*: seq[byte]
 

codex/manifest/manifest.nim

@@ -29,7 +29,7 @@ import ../logutils
 # TODO: Manifest should be reworked to more concrete types,
 # perhaps using inheritance
 type
-  Manifest* = object of RootObj
+  Manifest* = ref object of RootObj
     treeCid {.serialize.}: Cid              # Root of the merkle tree
     datasetSize {.serialize.}: NBytes       # Total size of all blocks
     blockSize {.serialize.}: NBytes         # Size of each contained block (might not be needed if blocks are len-prefixed)

config.nims

@@ -121,6 +121,9 @@ switch("define", "ctt_asm=false")
 # Allow the use of old-style case objects for nim config compatibility
 switch("define", "nimOldCaseObjects")
 
+# Enable compat mode for Chronos V4
+switch("define", "chronosHandleException")
+
 # begin Nimble config (version 1)
 when system.fileExists("nimble.paths"):
   include "nimble.paths"

tests/codex/sales/testsales.nim

@@ -323,8 +323,7 @@ asyncchecksuite "Sales":
                          slot: UInt256,
                          onBatch: BatchProc): Future[?!void] {.async.} =
       let blk = bt.Block.new( @[1.byte] ).get
-      onBatch( blk.repeat(request.ask.slotSize.truncate(int)) )
-      return success()
+      await onBatch( blk.repeat(request.ask.slotSize.truncate(int)) )
 
     createAvailability()
     await market.requestStorage(request)
@@ -337,8 +336,8 @@ asyncchecksuite "Sales":
                          onBatch: BatchProc): Future[?!void] {.async.} =
       slotIndex = slot
       let blk = bt.Block.new( @[1.byte] ).get
-      onBatch(@[ blk ])
-      return success()
+      await onBatch(@[ blk ])
+
     let sold = newFuture[void]()
     sales.onSale = proc(request: StorageRequest, slotIndex: UInt256) =
       sold.complete()

tests/codex/sales/testslotqueue.nim

@@ -524,7 +524,7 @@ suite "Slot queue":
                                   request.ask,
                                   request.expiry,
                                   seen = true)
-    queue.push(item)
+    check queue.push(item).isOk
     check eventually queue.paused
     check onProcessSlotCalledWith.len == 0
 
@@ -534,7 +534,7 @@ suite "Slot queue":
 
     let request = StorageRequest.example
     var items = SlotQueueItem.init(request)
-    queue.push(items)
+    check queue.push(items).isOk
     # check all items processed
     check eventually queue.len == 0
 
@@ -546,7 +546,7 @@ suite "Slot queue":
                                   request.expiry,
                                   seen = true)
     check queue.paused
-    queue.push(item0)
+    check queue.push(item0).isOk
     check queue.paused
 
   test "paused queue waits for unpause before continuing processing":
@@ -558,7 +558,7 @@ suite "Slot queue":
                                   seen = false)
     check queue.paused
     # push causes unpause
-    queue.push(item)
+    check queue.push(item).isOk
     # check all items processed
     check eventually onProcessSlotCalledWith == @[
       (item.requestId, item.slotIndex),
@@ -576,8 +576,8 @@ suite "Slot queue":
                                   request.ask,
                                   request.expiry,
                                   seen = true)
-    queue.push(item0)
-    queue.push(item1)
+    check queue.push(item0).isOk
+    check queue.push(item1).isOk
     check queue[0].seen
     check queue[1].seen
 

tests/contracts/testMarket.nim

@@ -256,7 +256,7 @@ ethersuite "On-Chain Market":
       receivedIds.add(requestId)
 
     let subscription = await market.subscribeRequestCancelled(request.id, onRequestCancelled)
-    advanceToCancelledRequest(otherRequest) # shares expiry with otherRequest
+    await advanceToCancelledRequest(otherRequest) # shares expiry with otherRequest
     await market.withdrawFunds(otherRequest.id)
     check receivedIds.len == 0
     await market.withdrawFunds(request.id)

tests/ethertest.nim

@@ -25,5 +25,5 @@ template ethersuite*(name, body) =
 
     body
 
-export unittest
+export asynctest
 export ethers except `%`

tests/helpers/multisetup.nim

@@ -2,8 +2,9 @@ import pkg/chronos
 
 # Allow multiple setups and teardowns in a test suite
 template asyncmultisetup* =
-  var setups: seq[proc: Future[void] {.gcsafe.}]
-  var teardowns: seq[proc: Future[void] {.gcsafe.}]
+  var setups: seq[proc: Future[void].Raising([AsyncExceptionError]) {.gcsafe.}]
+  var teardowns: seq[
+    proc: Future[void].Raising([AsyncExceptionError]) {.gcsafe.}]
 
   setup:
     for setup in setups:
@@ -14,10 +15,12 @@ template asyncmultisetup* =
       await teardown()
 
   template setup(setupBody) {.inject, used.} =
-    setups.add(proc {.async.} = setupBody)
+    setups.add(proc {.async: (
+      handleException: true, raises: [AsyncExceptionError]).} = setupBody)
 
   template teardown(teardownBody) {.inject, used.} =
-    teardowns.insert(proc {.async.} = teardownBody)
+    teardowns.insert(proc {.async: (
+      handleException: true, raises: [AsyncExceptionError]).} = teardownBody)
 
 template multisetup* =
   var setups: seq[proc() {.gcsafe.}]
@@ -32,7 +35,8 @@ template multisetup* =
       teardown()
 
   template setup(setupBody) {.inject, used.} =
-    setups.add(proc = setupBody)
+    let setupProc = proc = setupBody
+    setups.add(setupProc)
 
   template teardown(teardownBody) {.inject, used.} =
     teardowns.insert(proc = teardownBody)

tests/integration/codexprocess.nim

@@ -2,6 +2,7 @@ import pkg/questionable
 import pkg/questionable/results
 import pkg/confutils
 import pkg/chronicles
+import pkg/chronos/asyncproc
 import pkg/ethers
 import pkg/libp2p
 import std/os

tests/integration/hardhatprocess.nim

@@ -3,6 +3,7 @@ import pkg/questionable/results
 import pkg/confutils
 import pkg/chronicles
 import pkg/chronos
+import pkg/chronos/asyncproc
 import pkg/stew/io2
 import std/os
 import std/sets

tests/integration/nodeprocess.nim

@@ -2,6 +2,7 @@ import pkg/questionable
 import pkg/questionable/results
 import pkg/confutils
 import pkg/chronicles
+import pkg/chronos/asyncproc
 import pkg/libp2p
 import std/os
 import std/strutils