[sales] replace fulfillRequest() by fillSlot()

codex/market.nim

@@ -12,6 +12,7 @@ type
   Subscription* = ref object of RootObj
   OnRequest* = proc(id: array[32, byte], ask: StorageAsk) {.gcsafe, upraises:[].}
   OnFulfillment* = proc(requestId: array[32, byte]) {.gcsafe, upraises: [].}
+  OnSlotFilled* = proc(requestId: array[32, byte], slotIndex: UInt256) {.gcsafe, upraises:[].}
 
 method getSigner*(market: Market): Future[Address] {.base, async.} =
   raiseAssert("not implemented")
@@ -35,6 +36,11 @@ method fulfillRequest*(market: Market,
                        proof: seq[byte]) {.base, async.} =
   raiseAssert("not implemented")
 
+method getHost*(market: Market,
+                requestId: array[32, byte],
+                slotIndex: UInt256): Future[?Address] {.base, async.} =
+  raiseAssert("not implemented")
+
 method fillSlot*(market: Market,
                  requestId: array[32, byte],
                  slotIndex: UInt256,
@@ -52,5 +58,12 @@ method subscribeFulfillment*(market: Market,
                             Future[Subscription] {.base, async.} =
   raiseAssert("not implemented")
 
+method subscribeSlotFilled*(market: Market,
+                            requestId: array[32, byte],
+                            slotIndex: UInt256,
+                            callback: OnSlotFilled):
+                           Future[Subscription] {.base, async.} =
+  raiseAssert("not implemented")
+
 method unsubscribe*(subscription: Subscription) {.base, async, upraises:[].} =
   raiseAssert("not implemented")

codex/sales.nim

@@ -55,7 +55,9 @@ type
   OnStore = proc(cid: string, availability: Availability): Future[void] {.gcsafe, upraises: [].}
   OnProve = proc(cid: string): Future[seq[byte]] {.gcsafe, upraises: [].}
   OnClear = proc(availability: Availability, request: StorageRequest) {.gcsafe, upraises: [].}
-  OnSale = proc(availability: Availability, request: StorageRequest) {.gcsafe, upraises: [].}
+  OnSale = proc(availability: Availability,
+                request: StorageRequest,
+                slotIndex: UInt256) {.gcsafe, upraises: [].}
 
 func new*(_: type Sales, market: Market, clock: Clock): Sales =
   Sales(
@@ -113,26 +115,31 @@ proc finish(agent: SalesAgent, success: bool) =
 
   if success:
     if onSale =? agent.sales.onSale and request =? agent.request:
-      onSale(agent.availability, request)
+      onSale(agent.availability, request, 0.u256) # TODO: slot index
   else:
     if onClear =? agent.sales.onClear and request =? agent.request:
       onClear(agent.availability, request)
     agent.sales.add(agent.availability)
 
-proc onFulfill(agent: SalesAgent, requestId: array[32, byte]) {.async.} =
+proc onSlotFilled(agent: SalesAgent,
+                  requestId: array[32, byte],
+                  slotIndex: UInt256) {.async.} =
   try:
     let market = agent.sales.market
-    let host = await market.getHost(requestId)
+    let host = await market.getHost(requestId, slotIndex)
     let me = await market.getSigner()
     agent.finish(success = (host == me.some))
   except CatchableError:
     agent.finish(success = false)
 
-proc subscribeFulfill(agent: SalesAgent) {.async.} =
-  proc onFulfill(requestId: array[32, byte]) {.gcsafe, upraises:[].} =
-    asyncSpawn agent.onFulfill(requestId)
+proc subscribeSlotFilled(agent: SalesAgent) {.async.} =
+  proc onSlotFilled(requestId: array[32, byte],
+                    slotIndex: UInt256) {.gcsafe, upraises:[].} =
+    asyncSpawn agent.onSlotFilled(requestId, slotIndex)
   let market = agent.sales.market
-  let subscription = await market.subscribeFulfillment(agent.requestId, onFulfill)
+  let subscription = await market.subscribeSlotFilled(agent.requestId,
+                                                      0.u256,
+                                                      onSlotFilled) # TODO: slot index
   agent.subscription = some subscription
 
 proc waitForExpiry(agent: SalesAgent) {.async.} =
@@ -155,7 +162,7 @@ proc start(agent: SalesAgent) {.async.} =
 
     sales.remove(availability)
 
-    await agent.subscribeFulfill()
+    await agent.subscribeSlotFilled()
 
     agent.request = await market.getRequest(agent.requestId)
     without request =? agent.request:
@@ -166,7 +173,7 @@ proc start(agent: SalesAgent) {.async.} =
 
     await onStore(request.content.cid, availability)
     let proof = await onProve(request.content.cid)
-    await market.fulfillRequest(request.id, proof)
+    await market.fillSlot(request.id, 0.u256, proof) # TODO: slot index
   except CancelledError:
     raise
   except CatchableError as e:

tests/codex/helpers/mockmarket.nim

@@ -7,15 +7,22 @@ type
   MockMarket* = ref object of Market
     requested*: seq[StorageRequest]
     fulfilled*: seq[Fulfillment]
+    filled*: seq[Slot]
     signer: Address
     subscriptions: Subscriptions
   Fulfillment* = object
     requestId*: array[32, byte]
     proof*: seq[byte]
     host*: Address
+  Slot* = object
+    requestId*: array[32, byte]
+    slotIndex*: UInt256
+    proof*: seq[byte]
+    host*: Address
   Subscriptions = object
     onRequest: seq[RequestSubscription]
     onFulfillment: seq[FulfillmentSubscription]
+    onSlotFilled: seq[SlotFilledSubscription]
   RequestSubscription* = ref object of Subscription
     market: MockMarket
     callback: OnRequest
@@ -23,6 +30,11 @@ type
     market: MockMarket
     requestId: array[32, byte]
     callback: OnFulfillment
+  SlotFilledSubscription* = ref object of Subscription
+    market: MockMarket
+    requestId: array[32, byte]
+    slotIndex: UInt256
+    callback: OnSlotFilled
 
 proc new*(_: type MockMarket): MockMarket =
   MockMarket(signer: Address.example)
@@ -69,6 +81,38 @@ method fulfillRequest*(market: MockMarket,
                        proof: seq[byte]) {.async.} =
   market.fulfillRequest(requestid, proof, market.signer)
 
+method getHost(market: MockMarket,
+               requestId: array[32, byte],
+               slotIndex: UInt256): Future[?Address] {.async.} =
+  for slot in market.filled:
+    if slot.requestId == requestId and slot.slotIndex == slotIndex:
+      return some slot.host
+  return none Address
+
+proc fillSlot*(market: MockMarket,
+               requestId: array[32, byte],
+               slotIndex: UInt256,
+               proof: seq[byte],
+               host: Address) =
+  let slot = Slot(
+    requestId: requestId,
+    slotIndex: slotIndex,
+    proof: proof,
+    host: host
+  )
+  market.filled.add(slot)
+  var subscriptions = market.subscriptions.onSlotFilled
+  for subscription in subscriptions:
+    if subscription.requestId == requestId and
+       subscription.slotIndex == slotIndex:
+      subscription.callback(requestId, slotIndex)
+
+method fillSlot*(market: MockMarket,
+                 requestId: array[32, byte],
+                 slotIndex: UInt256,
+                 proof: seq[byte]) {.async.} =
+  market.fillSlot(requestId, slotIndex, proof, market.signer)
+
 method subscribeRequests*(market: MockMarket,
                           callback: OnRequest):
                          Future[Subscription] {.async.} =
@@ -91,8 +135,25 @@ method subscribeFulfillment*(market: MockMarket,
   market.subscriptions.onFulfillment.add(subscription)
   return subscription
 
+method subscribeSlotFilled*(market: MockMarket,
+                            requestId: array[32, byte],
+                            slotIndex: UInt256,
+                            callback: OnSlotFilled):
+                           Future[Subscription] {.async.} =
+  let subscription = SlotFilledSubscription(
+    market: market,
+    requestId: requestId,
+    slotIndex: slotIndex,
+    callback: callback
+  )
+  market.subscriptions.onSlotFilled.add(subscription)
+  return subscription
+
 method unsubscribe*(subscription: RequestSubscription) {.async.} =
   subscription.market.subscriptions.onRequest.keepItIf(it != subscription)
 
 method unsubscribe*(subscription: FulfillmentSubscription) {.async.} =
   subscription.market.subscriptions.onFulfillment.keepItIf(it != subscription)
+
+method unsubscribe*(subscription: SlotFilledSubscription) {.async.} =
+  subscription.market.subscriptions.onSlotFilled.keepItIf(it != subscription)

tests/codex/testsales.nim

@@ -16,7 +16,8 @@ suite "Sales":
     ask: StorageAsk(
       duration: 60.u256,
       size: 100.u256,
-      reward:42.u256
+      reward:42.u256,
+      slots: 4
     ),
     content: StorageContent(
       cid: "some cid"
@@ -101,24 +102,30 @@ suite "Sales":
     discard await market.requestStorage(request)
     check provingCid == request.content.cid
 
-  test "fulfills request":
+  test "fills a slot":
     sales.add(availability)
     discard await market.requestStorage(request)
-    check market.fulfilled.len == 1
-    check market.fulfilled[0].requestId == request.id
-    check market.fulfilled[0].proof == proof
-    check market.fulfilled[0].host == await market.getSigner()
+    check market.filled.len == 1
+    check market.filled[0].requestId == request.id
+    check market.filled[0].slotIndex < request.ask.slots.u256
+    check market.filled[0].proof == proof
+    check market.filled[0].host == await market.getSigner()
 
-  test "calls onSale when request is fulfilled":
+  test "calls onSale when slot is filled":
     var soldAvailability: Availability
     var soldRequest: StorageRequest
-    sales.onSale = proc(availability: Availability, request: StorageRequest) =
+    var soldSlotIndex: UInt256
+    sales.onSale = proc(availability: Availability,
+                        request: StorageRequest,
+                        slotIndex: UInt256) =
       soldAvailability = availability
       soldRequest = request
+      soldSlotIndex = slotIndex
     sales.add(availability)
     discard await market.requestStorage(request)
     check soldAvailability == availability
     check soldRequest == request
+    check soldSlotIndex < request.ask.slots.u256
 
   test "calls onClear when storage becomes available again":
     sales.onProve = proc(cid: string): Future[seq[byte]] {.async.} =
@@ -133,13 +140,14 @@ suite "Sales":
     check clearedAvailability == availability
     check clearedRequest == request
 
-  test "makes storage available again when other host fulfills request":
+  test "makes storage available again when other host fills the slot":
     let otherHost = Address.example
     sales.onStore = proc(cid: string, availability: Availability) {.async.} =
       await sleepAsync(1.hours)
     sales.add(availability)
     discard await market.requestStorage(request)
-    market.fulfillRequest(request.id, proof, otherHost)
+    for slotIndex in 0..<request.ask.slots:
+      market.fillSlot(request.id, slotIndex.u256, proof, otherHost)
     check sales.available == @[availability]
 
   test "makes storage available again when request expires":