feat(api): availabilities patch endpoint (#692)

* feat(api): availabilities patch and reservations endpoints

* test: fixing tests and writing

* test: test reservations endpoint

* chore: feedback implementation

* chore: feedback implementation

* test: fix integration tests

codex/rest/api.nim

@@ -35,6 +35,7 @@ import ../contracts
 import ../manifest
 import ../streams/asyncstreamwrapper
 import ../stores
+import ../utils/options
 
 import ./coders
 import ./json
@@ -253,9 +254,10 @@ proc initSalesApi(node: CodexNodeRef, router: var RestRouter) =
   router.rawApi(
     MethodPost,
     "/api/codex/v1/sales/availability") do () -> RestApiResponse:
-      ## Add available storage to sell
+      ## Add available storage to sell.
+      ## Every time Availability's offer finishes, its capacity is returned to the availability.
       ##
-      ## size           - size of available storage in bytes
+      ## totalSize      - size of available storage in bytes
       ## duration       - maximum time the storage should be sold for (in seconds)
       ## minPrice       - minimum price to be paid (in amount of tokens)
       ## maxCollateral  - maximum collateral user is willing to pay per filled Slot (in amount of tokens)
@@ -271,12 +273,15 @@ proc initSalesApi(node: CodexNodeRef, router: var RestRouter) =
 
         let reservations = contracts.sales.context.reservations
 
-        if not reservations.hasAvailable(restAv.size.truncate(uint)):
+        if restAv.totalSize == 0:
+          return RestApiResponse.error(Http400, "Total size must be larger then zero")
+
+        if not reservations.hasAvailable(restAv.totalSize.truncate(uint)):
           return RestApiResponse.error(Http422, "Not enough storage quota")
 
         without availability =? (
           await reservations.createAvailability(
-            restAv.size,
+            restAv.totalSize,
             restAv.duration,
             restAv.minPrice,
             restAv.maxCollateral)
@@ -284,11 +289,106 @@ proc initSalesApi(node: CodexNodeRef, router: var RestRouter) =
           return RestApiResponse.error(Http500, error.msg)
 
         return RestApiResponse.response(availability.toJson,
+                                        Http201,
                                         contentType="application/json")
       except CatchableError as exc:
         trace "Excepting processing request", exc = exc.msg
         return RestApiResponse.error(Http500)
 
+  router.rawApi(
+    MethodPatch,
+    "/api/codex/v1/sales/availability/{id}") do (id: AvailabilityId) -> RestApiResponse:
+      ## Updates Availability.
+      ## The new parameters will be only considered for new requests.
+      ## Existing Requests linked to this Availability will continue as is.
+      ##
+      ## totalSize      - size of available storage in bytes. When decreasing the size, then lower limit is the currently `totalSize - freeSize`.
+      ## duration       - maximum time the storage should be sold for (in seconds)
+      ## minPrice       - minimum price to be paid (in amount of tokens)
+      ## maxCollateral  - maximum collateral user is willing to pay per filled Slot (in amount of tokens)
+
+      try:
+        without contracts =? node.contracts.host:
+          return RestApiResponse.error(Http503, "Sales unavailable")
+
+        without id =? id.tryGet.catch, error:
+          return RestApiResponse.error(Http400, error.msg)
+        without keyId =? id.key.tryGet.catch, error:
+          return RestApiResponse.error(Http400, error.msg)
+
+        let
+          body = await request.getBody()
+          reservations = contracts.sales.context.reservations
+
+        type OptRestAvailability = Optionalize(RestAvailability)
+        without restAv =? OptRestAvailability.fromJson(body), error:
+          return RestApiResponse.error(Http400, error.msg)
+
+        without availability =? (await reservations.get(keyId, Availability)), error:
+          if error of NotExistsError:
+            return RestApiResponse.error(Http404, "Availability not found")
+
+          return RestApiResponse.error(Http500, error.msg)
+
+        if isSome restAv.freeSize:
+          return RestApiResponse.error(Http400, "Updating freeSize is not allowed")
+
+        if size =? restAv.totalSize:
+          # we don't allow lowering the totalSize bellow currently utilized size
+          if size < (availability.totalSize - availability.freeSize):
+            return RestApiResponse.error(Http400, "New totalSize must be larger then current totalSize - freeSize, which is currently: " & $(availability.totalSize - availability.freeSize))
+
+          availability.freeSize += size - availability.totalSize
+          availability.totalSize = size
+
+        if duration =? restAv.duration:
+          availability.duration = duration
+
+        if minPrice =? restAv.minPrice:
+          availability.minPrice = minPrice
+
+        if maxCollateral =? restAv.maxCollateral:
+          availability.maxCollateral = maxCollateral
+
+        if err =? (await reservations.update(availability)).errorOption:
+          return RestApiResponse.error(Http500, err.msg)
+
+        return RestApiResponse.response(Http200)
+      except CatchableError as exc:
+        trace "Excepting processing request", exc = exc.msg
+        return RestApiResponse.error(Http500)
+
+  router.rawApi(
+    MethodGet,
+    "/api/codex/v1/sales/availability/{id}/reservations") do (id: AvailabilityId) -> RestApiResponse:
+      ## Gets Availability's reservations.
+
+      try:
+        without contracts =? node.contracts.host:
+          return RestApiResponse.error(Http503, "Sales unavailable")
+
+        without id =? id.tryGet.catch, error:
+          return RestApiResponse.error(Http400, error.msg)
+        without keyId =? id.key.tryGet.catch, error:
+          return RestApiResponse.error(Http400, error.msg)
+
+        let reservations = contracts.sales.context.reservations
+
+        if error =? (await reservations.get(keyId, Availability)).errorOption:
+          if error of NotExistsError:
+            return RestApiResponse.error(Http404, "Availability not found")
+          else:
+            return RestApiResponse.error(Http500, error.msg)
+
+        without availabilitysReservations =? (await reservations.all(Reservation, id)), err:
+          return RestApiResponse.error(Http500, err.msg)
+
+        # TODO: Expand this structure with information about the linked StorageRequest not only RequestID
+        return RestApiResponse.response(availabilitysReservations.toJson, contentType="application/json")
+      except CatchableError as exc:
+        trace "Excepting processing request", exc = exc.msg
+        return RestApiResponse.error(Http500)
+
 proc initPurchasingApi(node: CodexNodeRef, router: var RestRouter) =
   router.rawApi(
     MethodPost,
@@ -329,10 +429,11 @@ proc initPurchasingApi(node: CodexNodeRef, router: var RestRouter) =
           return RestApiResponse.error(Http500)
 
         if expiry <= node.clock.now.u256:
-          return RestApiResponse.error(Http400, "Expiry needs to be in future")
+          return RestApiResponse.error(Http400, "Expiry needs to be in future. Now: " & $node.clock.now)
 
-        if expiry > node.clock.now.u256 + params.duration:
+        let expiryLimit = node.clock.now.u256 + params.duration
-          return RestApiResponse.error(Http400, "Expiry has to be before the request's end (now + duration)")
+        if expiry > expiryLimit:
+          return RestApiResponse.error(Http400, "Expiry has to be before the request's end (now + duration). Limit: " & $expiryLimit)
 
         without purchaseId =? await node.requestStorage(
           cid,

codex/rest/coders.nim

@@ -84,7 +84,7 @@ proc decodeString*(_: type array[32, byte],
   except ValueError as e:
     err e.msg.cstring
 
-proc decodeString*[T: PurchaseId | RequestId | Nonce | SlotId](_: type T,
+proc decodeString*[T: PurchaseId | RequestId | Nonce | SlotId | AvailabilityId](_: type T,
                   value: string): Result[T, cstring] =
   array[32, byte].decodeString(value).map(id => T(id))
 

codex/rest/json.nim

@@ -27,10 +27,11 @@ type
     error* {.serialize.}: ?string
 
   RestAvailability* = object
-    size* {.serialize.}: UInt256
+    totalSize* {.serialize.}: UInt256
     duration* {.serialize.}: UInt256
     minPrice* {.serialize.}: UInt256
     maxCollateral* {.serialize.}: UInt256
+    freeSize* {.serialize.}: ?UInt256
 
   RestSalesAgent* = object
     state* {.serialize.}: string

codex/sales/reservations.nim

@@ -9,24 +9,27 @@
 ##
 ##                                                       +--------------------------------------+
 ##                                                       |            RESERVATION               |
-## +--------------------------------------+              |--------------------------------------|
+## +----------------------------------------+              |--------------------------------------|
 ## |            AVAILABILITY                |              | ReservationId  | id             | PK |
-## |--------------------------------------|              |--------------------------------------|
+## |----------------------------------------|              |--------------------------------------|
 ## | AvailabilityId   | id            | PK  |<-||-------o<-| AvailabilityId | availabilityId | FK |
-## |--------------------------------------|              |--------------------------------------|
+## |----------------------------------------|              |--------------------------------------|
-## | UInt256        | size          |     |              | UInt256        | size           |    |
+## | UInt256          | totalSize     |     |              | UInt256        | size           |    |
-## |--------------------------------------|              |--------------------------------------|
+## |----------------------------------------|              |--------------------------------------|
-## | UInt256        | duration      |     |              | SlotId         | slotId         |    |
+## | UInt256          | freeSize      |     |              | SlotId         | slotId         |    |
-## |--------------------------------------|              +--------------------------------------+
+## |----------------------------------------|              +--------------------------------------+
+## | UInt256          | duration      |     |
+## |----------------------------------------|
 ## | UInt256          | minPrice      |     |
-## |--------------------------------------|
+## |----------------------------------------|
 ## | UInt256          | maxCollateral |     |
-## +--------------------------------------+
+## +----------------------------------------+
 
 import pkg/upraises
 push: {.upraises: [].}
 
 import std/typetraits
+import std/sequtils
 import pkg/chronos
 import pkg/datastore
 import pkg/nimcrypto
@@ -35,7 +38,9 @@ import pkg/questionable/results
 import pkg/stint
 import pkg/stew/byteutils
 import ../logutils
+import ../clock
 import ../stores
+import ../market
 import ../contracts/requests
 import ../utils/json
 
@@ -52,7 +57,8 @@ type
   SomeStorableId = AvailabilityId | ReservationId
   Availability* = ref object
     id* {.serialize.}: AvailabilityId
-    size* {.serialize.}: UInt256
+    totalSize* {.serialize.}: UInt256
+    freeSize* {.serialize.}: UInt256
     duration* {.serialize.}: UInt256
     minPrice* {.serialize.}: UInt256
     maxCollateral* {.serialize.}: UInt256
@@ -91,14 +97,15 @@ proc new*(T: type Reservations,
 
 proc init*(
   _: type Availability,
-  size: UInt256,
+  totalSize: UInt256,
+  freeSize: UInt256,
   duration: UInt256,
   minPrice: UInt256,
   maxCollateral: UInt256): Availability =
 
   var id: array[32, byte]
   doAssert randomBytes(id) == 32
-  Availability(id: AvailabilityId(id), size: size, duration: duration, minPrice: minPrice, maxCollateral: maxCollateral)
+  Availability(id: AvailabilityId(id), totalSize:totalSize, freeSize: freeSize, duration: duration, minPrice: minPrice, maxCollateral: maxCollateral)
 
 proc init*(
   _: type Reservation,
@@ -118,17 +125,9 @@ func toArray(id: SomeStorableId): array[32, byte] =
 proc `==`*(x, y: AvailabilityId): bool {.borrow.}
 proc `==`*(x, y: ReservationId): bool {.borrow.}
 proc `==`*(x, y: Reservation): bool =
-  x.id == y.id and
+  x.id == y.id
-  x.availabilityId == y.availabilityId and
-  x.size == y.size and
-  x.requestId == y.requestId and
-  x.slotIndex == y.slotIndex
 proc `==`*(x, y: Availability): bool =
-  x.id == y.id and
+  x.id == y.id
-  x.size == y.size and
-  x.duration == y.duration and
-  x.maxCollateral == y.maxCollateral and
-  x.minPrice == y.minPrice
 
 proc `$`*(id: SomeStorableId): string = id.toArray.toHex
 
@@ -198,11 +197,11 @@ proc get*(
 
   return success obj
 
-proc update(
+proc updateImpl(
   self: Reservations,
   obj: SomeStorableObject): Future[?!void] {.async.} =
 
-  trace "updating " & $(obj.type), id = obj.id, size = obj.size
+  trace "updating " & $(obj.type), id = obj.id
 
   without key =? obj.key, error:
     return failure(error)
@@ -215,6 +214,39 @@ proc update(
 
   return success()
 
+proc update*(
+  self: Reservations,
+  obj: Reservation): Future[?!void] {.async.} =
+  return await self.updateImpl(obj)
+
+proc update*(
+  self: Reservations,
+  obj: Availability): Future[?!void] {.async.} =
+
+  without key =? obj.key, error:
+    return failure(error)
+
+  let getResult = await self.get(key, Availability)
+
+  if getResult.isOk:
+    let oldAvailability = !getResult
+
+    # Sizing of the availability changed, we need to adjust the repo reservation accordingly
+    if oldAvailability.totalSize != obj.totalSize:
+      if oldAvailability.totalSize < obj.totalSize: # storage added
+        if reserveErr =? (await self.repo.reserve((obj.totalSize - oldAvailability.totalSize).truncate(uint))).errorOption:
+          return failure(reserveErr.toErr(ReserveFailedError))
+
+      elif oldAvailability.totalSize > obj.totalSize: # storage removed
+        if reserveErr =? (await self.repo.release((oldAvailability.totalSize - obj.totalSize).truncate(uint))).errorOption:
+          return failure(reserveErr.toErr(ReleaseFailedError))
+  else:
+    let err = getResult.error()
+    if not (err of NotExistsError):
+      return failure(err)
+
+  return await self.updateImpl(obj)
+
 proc delete(
   self: Reservations,
   key: Key): Future[?!void] {.async.} =
@@ -258,7 +290,7 @@ proc deleteReservation*(
     without var availability =? await self.get(availabilityKey, Availability), error:
       return failure(error)
 
-    availability.size += reservation.size
+    availability.freeSize += reservation.size
 
     if updateErr =? (await self.update(availability)).errorOption:
       return failure(updateErr)
@@ -278,9 +310,9 @@ proc createAvailability*(
   trace "creating availability", size, duration, minPrice, maxCollateral
 
   let availability = Availability.init(
-    size, duration, minPrice, maxCollateral
+    size, size, duration, minPrice, maxCollateral
   )
-  let bytes = availability.size.truncate(uint)
+  let bytes = availability.freeSize.truncate(uint)
 
   if reserveErr =? (await self.repo.reserve(bytes)).errorOption:
     return failure(reserveErr.toErr(ReserveFailedError))
@@ -324,7 +356,7 @@ proc createReservation*(
   without var availability =? await self.get(availabilityKey, Availability), error:
     return failure(error)
 
-  if availability.size < slotSize:
+  if availability.freeSize < slotSize:
     let error = newException(
       BytesOutOfBoundsError,
       "trying to reserve an amount of bytes that is greater than the total size of the Availability")
@@ -333,9 +365,9 @@ proc createReservation*(
   if createResErr =? (await self.update(reservation)).errorOption:
     return failure(createResErr)
 
-  # reduce availability size by the slot size, which is now accounted for in
+  # reduce availability freeSize by the slot size, which is now accounted for in
   # the newly created Reservation
-  availability.size -= slotSize
+  availability.freeSize -= slotSize
 
   # update availability with reduced size
   if updateErr =? (await self.update(availability)).errorOption:
@@ -393,7 +425,7 @@ proc returnBytesToAvailability*(
   without var availability =? await self.get(availabilityKey, Availability), error:
     return failure(error)
 
-  availability.size += bytesToBeReturned
+  availability.freeSize += bytesToBeReturned
 
   # Update availability with returned size
   if updateErr =? (await self.update(availability)).errorOption:
@@ -456,11 +488,12 @@ iterator items(self: StorableIter): Future[?seq[byte]] =
 
 proc storables(
   self: Reservations,
-  T: type SomeStorableObject
+  T: type SomeStorableObject,
+  queryKey: Key = ReservationsKey
 ): Future[?!StorableIter] {.async.} =
 
   var iter = StorableIter()
-  let query = Query.init(ReservationsKey)
+  let query = Query.init(queryKey)
   when T is Availability:
     # should indicate key length of 4, but let the .key logic determine it
     without defaultKey =? AvailabilityId.default.key, error:
@@ -475,6 +508,7 @@ proc storables(
   without results =? await self.repo.metaDs.query(query), error:
     return failure(error)
 
+  # /sales/reservations
   proc next(): Future[?seq[byte]] {.async.} =
     await idleAsync()
     iter.finished = results.finished
@@ -491,14 +525,15 @@ proc storables(
   iter.next = next
   return success iter
 
-proc all*(
+proc allImpl(
   self: Reservations,
-  T: type SomeStorableObject
+  T: type SomeStorableObject,
+  queryKey: Key = ReservationsKey
 ): Future[?!seq[T]] {.async.} =
 
   var ret: seq[T] = @[]
 
-  without storables =? (await self.storables(T)), error:
+  without storables =? (await self.storables(T, queryKey)), error:
     return failure(error)
 
   for storable in storables.items:
@@ -515,6 +550,22 @@ proc all*(
 
   return success(ret)
 
+proc all*(
+  self: Reservations,
+  T: type SomeStorableObject
+): Future[?!seq[T]] {.async.} =
+  return await self.allImpl(T)
+
+proc all*(
+  self: Reservations,
+  T: type SomeStorableObject,
+  availabilityId: AvailabilityId
+): Future[?!seq[T]] {.async.} =
+  without key =? (ReservationsKey / $availabilityId):
+    return failure("no key")
+
+  return await self.allImpl(T, key)
+
 proc findAvailability*(
   self: Reservations,
   size, duration, minPrice, collateral: UInt256
@@ -528,13 +579,13 @@ proc findAvailability*(
     if bytes =? (await item) and
       availability =? Availability.fromJson(bytes):
 
-      if size <= availability.size and
+      if size <= availability.freeSize and
         duration <= availability.duration and
         collateral <= availability.maxCollateral and
         minPrice >= availability.minPrice:
 
         trace "availability matched",
-          size, availsize = availability.size,
+          size, availFreeSize = availability.freeSize,
           duration, availDuration = availability.duration,
           minPrice, availMinPrice = availability.minPrice,
           collateral, availMaxCollateral = availability.maxCollateral
@@ -542,7 +593,7 @@ proc findAvailability*(
         return some availability
 
       trace "availability did not match",
-        size, availsize = availability.size,
+        size, availFreeSize = availability.freeSize,
         duration, availDuration = availability.duration,
         minPrice, availMinPrice = availability.minPrice,
         collateral, availMaxCollateral = availability.maxCollateral

codex/utils/optionalcast.nim

@@ -1,16 +0,0 @@
-import pkg/questionable
-import pkg/questionable/operators
-
-export questionable
-
-proc `as`*[T](value: T, U: type): ?U =
-  ## Casts a value to another type, returns an Option.
-  ## When the cast succeeds, the option will contain the casted value.
-  ## When the cast fails, the option will have no value.
-  when value is U:
-    return some value
-  elif value is ref object:
-    if value of U:
-      return some U(value)
-
-Option.liftBinary `as`

codex/utils/options.nim

@@ -0,0 +1,61 @@
+import macros
+import strutils
+import pkg/questionable
+import pkg/questionable/operators
+
+export questionable
+
+proc `as`*[T](value: T, U: type): ?U =
+  ## Casts a value to another type, returns an Option.
+  ## When the cast succeeds, the option will contain the casted value.
+  ## When the cast fails, the option will have no value.
+  when value is U:
+    return some value
+  elif value is ref object:
+    if value of U:
+      return some U(value)
+
+Option.liftBinary `as`
+
+# Template that wraps type with `Option[]` only if it is already not `Option` type
+template WrapOption*(input: untyped): type =
+  when input is Option:
+    input
+  else:
+    Option[input]
+
+
+macro createType(t: typedesc): untyped =
+  var objectType = getType(t)
+
+  # Work around for https://github.com/nim-lang/Nim/issues/23112
+  while objectType.kind == nnkBracketExpr and objectType[0].eqIdent"typeDesc":
+    objectType = getType(objectType[1])
+
+  expectKind(objectType, NimNodeKind.nnkObjectTy)
+  var fields = nnkRecList.newTree()
+
+  # Generates the list of fields that are wrapped in `Option[T]`.
+  # Technically wrapped with `WrapOption` which is template used to prevent
+  # re-wrapping already filed which is `Option[T]`.
+  for field in objectType[2]:
+    let fieldType = getTypeInst(field)
+    let newFieldNode =
+          nnkIdentDefs.newTree(ident($field), nnkCall.newTree(ident("WrapOption"), fieldType), newEmptyNode())
+
+    fields.add(newFieldNode)
+
+  # Creates new object type T with the fields lists from steps above.
+  let tSym = genSym(nskType, "T")
+  nnkStmtList.newTree(
+      nnkTypeSection.newTree(
+        nnkTypeDef.newTree(tSym, newEmptyNode(), nnkObjectTy.newTree(newEmptyNode(), newEmptyNode(), fields))
+      ),
+      tSym
+  )
+
+template Optionalize*(t: typed): untyped =
+  ## Takes object type and wraps all the first level fields into
+  ## Option type unless it is already Option type.
+  createType(t)
+

openapi.yaml

@@ -20,6 +20,15 @@ components:
       description: Peer Identity reference as specified at https://docs.libp2p.io/concepts/fundamentals/peers/
       example: QmYyQSo1c1Ym7orWxLYvCrM2EmxFTANf8wXmmE7DWjhx5N
 
+    Id:
+      type: string
+      description: 32bits identifier encoded in hex-decimal string.
+      example: 0x...
+
+    BigInt:
+      type: string
+      description: Integer represented as decimal string
+
     Cid:
       type: string
       description: Content Identifier as specified at https://github.com/multiformats/cid
@@ -102,16 +111,12 @@ components:
 
     SalesAvailability:
       type: object
-      required:
-        - size
-        - minPrice
       properties:
         id:
+          $ref: "#/components/schemas/Id"
+        totalSize:
           type: string
-          description: Hexadecimal identifier of the availability
+          description: Total size of availability's storage in bytes as decimal string
-        size:
-          type: string
-          description: Size of available storage in bytes as decimal string
         duration:
           $ref: "#/components/schemas/Duration"
         minPrice:
@@ -121,6 +126,24 @@ components:
           type: string
           description: Maximum collateral user is willing to pay per filled Slot (in amount of tokens) as decimal string
 
+    SalesAvailabilityREAD:
+      allOf:
+        - $ref: "#/components/schemas/SalesAvailability"
+        - type: object
+          properties:
+            freeSize:
+              type: string
+              description: Unused size of availability's storage in bytes as decimal string
+
+    SalesAvailabilityCREATE:
+      allOf:
+        - $ref: "#/components/schemas/SalesAvailability"
+        - required:
+            - totalSize
+            - minPrice
+            - maxCollateral
+            - duration
+
     Slot:
       type: object
       properties:
@@ -132,6 +155,21 @@ components:
           type: string
           description: Slot Index as hexadecimal string
 
+    Reservation:
+      type: object
+      properties:
+        id:
+          $ref: "#/components/schemas/Id"
+        availabilityId:
+          $ref: "#/components/schemas/Id"
+        size:
+          $ref: "#/components/schemas/BigInt"
+        requestId:
+          $ref: "#/components/schemas/Id"
+        slotIndex:
+          type: string
+          description: Slot Index as hexadecimal string
+
     StorageRequestCreation:
       type: object
       required:
@@ -493,16 +531,84 @@ paths:
         content:
           application/json:
             schema:
-              $ref: "#/components/schemas/SalesAvailability"
+              $ref: "#/components/schemas/SalesAvailabilityCREATE"
       responses:
-        "200":
+        "201":
           description: Created storage availability
           content:
             application/json:
               schema:
-                $ref: "#/components/schemas/SalesAvailability"
+                $ref: "#/components/schemas/SalesAvailabilityREAD"
+        "400":
+          description: Invalid data input
+        "422":
+          description: Not enough node's storage quota available
         "500":
-          description: Error reserving availablility
+          description: Error reserving availability
+        "503":
+          description: Sales are unavailable
+  "/sales/availability/{id}":
+    patch:
+      summary: "Updates availability"
+      description: |
+        The new parameters will be only considered for new requests.
+        Existing Requests linked to this Availability will continue as is.
+      operationId: updateOfferedStorage
+      tags: [ Marketplace ]
+      parameters:
+        - in: path
+          name: id
+          required: true
+          schema:
+            type: string
+          description: ID of Availability
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/SalesAvailability"
+      responses:
+        "204":
+          description: Availability successfully updated
+        "400":
+          description: Invalid data input
+        "404":
+          description: Availability not found
+        "422":
+          description: Not enough node's storage quota available
+        "500":
+          description: Error reserving availability
+        "503":
+          description: Sales are unavailable
+
+  "/sales/availability/{id}/reservations":
+    patch:
+      summary: "Get availability's reservations"
+      description: Return's list of Reservations for ongoing Storage Requests that the node hosts.
+      operationId: getReservations
+      tags: [ Marketplace ]
+      parameters:
+        - in: path
+          name: id
+          required: true
+          schema:
+            type: string
+          description: ID of Availability
+      responses:
+        "200":
+          description: Retrieved storage availabilities of the node
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: "#/components/schemas/Reservation"
+        "400":
+          description: Invalid Availability ID
+        "404":
+          description: Availability not found
+        "500":
+          description: Error getting reservations
         "503":
           description: Sales are unavailable
 

tests/codex/examples.nim

@@ -60,7 +60,8 @@ proc example*(_: type MultiHash, mcodec = Sha256HashCodec): MultiHash =
 
 proc example*(_: type Availability): Availability =
   Availability.init(
-    size = uint16.example.u256,
+    totalSize = uint16.example.u256,
+    freeSize = uint16.example.u256,
     duration = uint16.example.u256,
     minPrice = uint64.example.u256,
     maxCollateral = uint16.example.u256

tests/codex/sales/testreservations.nim

@@ -29,9 +29,9 @@ asyncchecksuite "Reservations module":
 
   proc createAvailability(): Availability =
     let example = Availability.example
-    let size = rand(100000..200000)
+    let totalSize = rand(100000..200000)
     let availability = waitFor reservations.createAvailability(
-      size.u256,
+      totalSize.u256,
       example.duration,
       example.minPrice,
       example.maxCollateral
@@ -39,7 +39,7 @@ asyncchecksuite "Reservations module":
     return availability.get
 
   proc createReservation(availability: Availability): Reservation =
-    let size = rand(1..<availability.size.truncate(int))
+    let size = rand(1..<availability.freeSize.truncate(int))
     let reservation = waitFor reservations.createReservation(
       availability.id,
       size.u256,
@@ -57,8 +57,8 @@ asyncchecksuite "Reservations module":
     check (await reservations.all(Availability)).get.len == 0
 
   test "generates unique ids for storage availability":
-    let availability1 = Availability.init(1.u256, 2.u256, 3.u256, 4.u256)
+    let availability1 = Availability.init(1.u256, 2.u256, 3.u256, 4.u256, 5.u256)
-    let availability2 = Availability.init(1.u256, 2.u256, 3.u256, 4.u256)
+    let availability2 = Availability.init(1.u256, 2.u256, 3.u256, 4.u256, 5.u256)
     check availability1.id != availability2.id
 
   test "can reserve available storage":
@@ -68,7 +68,7 @@ asyncchecksuite "Reservations module":
   test "creating availability reserves bytes in repo":
     let orig = repo.available
     let availability = createAvailability()
-    check repo.available == (orig.u256 - availability.size).truncate(uint)
+    check repo.available == (orig.u256 - availability.freeSize).truncate(uint)
 
   test "can get all availabilities":
     let availability1 = createAvailability()
@@ -106,6 +106,19 @@ asyncchecksuite "Reservations module":
       reservations.contains(reservation1)
       reservations.contains(reservation2)
 
+  test "can get reservations of specific availability":
+    let availability1 = createAvailability()
+    let availability2 = createAvailability()
+    let reservation1 = createReservation(availability1)
+    let reservation2 = createReservation(availability2)
+    let reservations = !(await reservations.all(Reservation, availability1.id))
+
+    check:
+      # perform unordered checks
+      reservations.len == 1
+      reservations.contains(reservation1)
+      not reservations.contains(reservation2)
+
   test "cannot create reservation with non-existant availability":
     let availability = Availability.example
     let created = await reservations.createReservation(
@@ -121,7 +134,7 @@ asyncchecksuite "Reservations module":
     let availability = createAvailability()
     let created = await reservations.createReservation(
       availability.id,
-      availability.size + 1,
+      availability.totalSize + 1,
       RequestId.example,
       UInt256.example
     )
@@ -130,11 +143,11 @@ asyncchecksuite "Reservations module":
 
   test "creating reservation reduces availability size":
     let availability = createAvailability()
-    let orig = availability.size
+    let orig = availability.freeSize
     let reservation = createReservation(availability)
     let key = availability.id.key.get
     let updated = (await reservations.get(key, Availability)).get
-    check updated.size == orig - reservation.size
+    check updated.freeSize == orig - reservation.size
 
   test "can check if reservation exists":
     let availability = createAvailability()
@@ -166,19 +179,19 @@ asyncchecksuite "Reservations module":
 
   test "deleting reservation returns bytes back to availability":
     let availability = createAvailability()
-    let orig = availability.size
+    let orig = availability.freeSize
     let reservation = createReservation(availability)
     discard await reservations.deleteReservation(
       reservation.id, reservation.availabilityId
     )
     let key = availability.key.get
     let updated = !(await reservations.get(key, Availability))
-    check updated.size == orig
+    check updated.freeSize == orig
 
   test "calling returnBytesToAvailability returns bytes back to availability":
     let availability = createAvailability()
     let reservation = createReservation(availability)
-    let orig = availability.size - reservation.size
+    let orig = availability.freeSize - reservation.size
     let origQuota = repo.quotaReservedBytes
     let returnedBytes = reservation.size + 200.u256
 
@@ -189,10 +202,28 @@ asyncchecksuite "Reservations module":
     let key = availability.key.get
     let updated = !(await reservations.get(key, Availability))
 
-    check updated.size > orig
+    check updated.freeSize > orig
-    check (updated.size - orig) == 200.u256
+    check (updated.freeSize - orig) == 200.u256
     check (repo.quotaReservedBytes - origQuota) == 200
 
+  test "update releases quota when lowering size":
+    let
+      availability = createAvailability()
+      origQuota = repo.quotaReservedBytes
+    availability.totalSize = availability.totalSize - 100
+
+    check isOk await reservations.update(availability)
+    check (origQuota - repo.quotaReservedBytes) == 100
+
+  test "update reserves quota when growing size":
+    let
+      availability = createAvailability()
+      origQuota = repo.quotaReservedBytes
+    availability.totalSize = availability.totalSize + 100
+
+    check isOk await reservations.update(availability)
+    check (repo.quotaReservedBytes - origQuota) == 100
+
   test "reservation can be partially released":
     let availability = createAvailability()
     let reservation = createReservation(availability)
@@ -240,7 +271,7 @@ asyncchecksuite "Reservations module":
     let availability = createAvailability()
 
     let found = await reservations.findAvailability(
-      availability.size,
+      availability.freeSize,
       availability.duration,
       availability.minPrice,
       availability.maxCollateral)
@@ -252,7 +283,7 @@ asyncchecksuite "Reservations module":
     let availability = createAvailability()
 
     let found = await reservations.findAvailability(
-      availability.size + 1,
+      availability.freeSize + 1,
       availability.duration,
       availability.minPrice,
       availability.maxCollateral)
@@ -262,7 +293,7 @@ asyncchecksuite "Reservations module":
   test "non-existant availability cannot be found":
     let availability = Availability.example
     let found = (await reservations.findAvailability(
-      availability.size,
+      availability.freeSize,
       availability.duration,
       availability.minPrice,
       availability.maxCollateral

tests/codex/sales/testsales.nim

@@ -127,7 +127,8 @@ asyncchecksuite "Sales":
 
   setup:
     availability = Availability(
-      size: 100.u256,
+      totalSize: 100.u256,
+      freeSize: 100.u256,
       duration: 60.u256,
       minPrice: 600.u256,
       maxCollateral: 400.u256
@@ -189,7 +190,7 @@ asyncchecksuite "Sales":
 
   proc createAvailability() =
     let a = waitFor reservations.createAvailability(
-      availability.size,
+      availability.totalSize,
       availability.duration,
       availability.minPrice,
       availability.maxCollateral
@@ -224,7 +225,7 @@ asyncchecksuite "Sales":
   proc wasIgnored(): bool =
     let run = proc(): Future[bool] {.async.} =
       always (
-        getAvailability().size == availability.size and
+        getAvailability().freeSize == availability.freeSize and
         (waitFor reservations.all(Reservation)).get.len == 0
       )
     waitFor run()
@@ -300,7 +301,7 @@ asyncchecksuite "Sales":
 
     createAvailability()
     await market.requestStorage(request)
-    check eventually getAvailability().size == availability.size - request.ask.slotSize
+    check eventually getAvailability().freeSize == availability.freeSize - request.ask.slotSize
 
   test "non-downloaded bytes are returned to availability once finished":
     var slotIndex = 0.u256
@@ -316,7 +317,7 @@ asyncchecksuite "Sales":
       sold.complete()
 
     createAvailability()
-    let origSize = availability.size
+    let origSize = availability.freeSize
     await market.requestStorage(request)
     await allowRequestToStart()
     await sold
@@ -325,7 +326,7 @@ asyncchecksuite "Sales":
     market.slotState[request.slotId(slotIndex)] = SlotState.Finished
     clock.advance(request.ask.duration.truncate(int64))
 
-    check eventually getAvailability().size == origSize - 1
+    check eventually getAvailability().freeSize == origSize - 1
 
   test "ignores download when duration not long enough":
     availability.duration = request.ask.duration - 1
@@ -334,7 +335,7 @@ asyncchecksuite "Sales":
     check wasIgnored()
 
   test "ignores request when slot size is too small":
-    availability.size = request.ask.slotSize - 1
+    availability.totalSize = request.ask.slotSize - 1
     createAvailability()
     await market.requestStorage(request)
     check wasIgnored()
@@ -399,7 +400,7 @@ asyncchecksuite "Sales":
       return failure(error)
     createAvailability()
     await market.requestStorage(request)
-    check getAvailability().size == availability.size
+    check getAvailability().freeSize == availability.freeSize
 
   test "generates proof of storage":
     var provingRequest: StorageRequest
@@ -472,7 +473,7 @@ asyncchecksuite "Sales":
     check eventually (await reservations.all(Availability)).get == @[availability]
 
   test "makes storage available again when request expires":
-    let origSize = availability.size
+    let origSize = availability.freeSize
     sales.onStore = proc(request: StorageRequest,
                          slot: UInt256,
                          onBatch: BatchProc): Future[?!void] {.async.} =
@@ -487,10 +488,10 @@ asyncchecksuite "Sales":
     market.requestState[request.id]=RequestState.Cancelled
     clock.set(request.expiry.truncate(int64)+1)
     check eventually (await reservations.all(Availability)).get == @[availability]
-    check getAvailability().size == origSize
+    check getAvailability().freeSize == origSize
 
   test "verifies that request is indeed expired from onchain before firing onCancelled":
-    let origSize = availability.size
+    let origSize = availability.freeSize
     sales.onStore = proc(request: StorageRequest,
                          slot: UInt256,
                          onBatch: BatchProc): Future[?!void] {.async.} =
@@ -504,10 +505,10 @@ asyncchecksuite "Sales":
     # would otherwise not set the timeout early enough as it uses `clock.now` in the deadline calculation.
     await sleepAsync(chronos.milliseconds(100))
     clock.set(request.expiry.truncate(int64)+1)
-    check getAvailability().size == 0
+    check getAvailability().freeSize == 0
 
     market.requestState[request.id]=RequestState.Cancelled # Now "on-chain" is also expired
-    check eventually getAvailability().size == origSize
+    check eventually getAvailability().freeSize == origSize
 
   test "loads active slots from market":
     let me = await market.getSigner()
@@ -556,4 +557,4 @@ asyncchecksuite "Sales":
     check (await reservations.all(Reservation)).get.len == 1
     await sales.load()
     check (await reservations.all(Reservation)).get.len == 0
-    check getAvailability().size == availability.size # was restored
+    check getAvailability().freeSize == availability.freeSize # was restored

tests/codex/testutils.nim

@@ -1,4 +1,4 @@
-import ./utils/testoptionalcast
+import ./utils/testoptions
 import ./utils/testkeyutils
 import ./utils/testasyncstatemachine
 import ./utils/testtimer

tests/codex/utils/testoptions.nim

@@ -1,5 +1,5 @@
 import std/unittest
-import codex/utils/optionalcast
+import codex/utils/options
 import ../helpers
 
 checksuite "optional casts":
@@ -28,3 +28,22 @@ checksuite "optional casts":
     check 42.some as int == some 42
     check 42.some as string == string.none
     check int.none as int == int.none
+
+checksuite "Optionalize":
+  test "does not except non-object types":
+    static:
+      doAssert not compiles(Optionalize(int))
+
+  test "converts object fields to option":
+    type BaseType = object
+      a: int
+      b: bool
+      c: string
+      d: Option[string]
+
+    type OptionalizedType = Optionalize(BaseType)
+
+    check OptionalizedType.a is Option[int]
+    check OptionalizedType.b is Option[bool]
+    check OptionalizedType.c is Option[string]
+    check OptionalizedType.d is Option[string]

tests/integration/codexclient.nim

@@ -133,27 +133,70 @@ proc getSlots*(client: CodexClient): ?!seq[Slot] =
 
 proc postAvailability*(
     client: CodexClient,
-    size, duration, minPrice, maxCollateral: UInt256
+    totalSize, duration, minPrice, maxCollateral: UInt256
 ): ?!Availability =
   ## Post sales availability endpoint
   ##
   let url = client.baseurl & "/sales/availability"
   let json = %*{
-    "size": size,
+    "totalSize": totalSize,
     "duration": duration,
     "minPrice": minPrice,
     "maxCollateral": maxCollateral,
   }
   let response = client.http.post(url, $json)
-  doAssert response.status == "200 OK", "expected 200 OK, got " & response.status & ", body: " & response.body
+  doAssert response.status == "201 Created", "expected 201 Created, got " & response.status & ", body: " & response.body
   Availability.fromJson(response.body)
 
+proc patchAvailabilityRaw*(
+    client: CodexClient,
+    availabilityId: AvailabilityId,
+    totalSize, freeSize, duration, minPrice, maxCollateral: ?UInt256 = UInt256.none
+): Response =
+  ## Updates availability
+  ##
+  let url = client.baseurl & "/sales/availability/" & $availabilityId
+
+  # TODO: Optionalize macro does not keep `serialize` pragmas so we can't use `Optionalize(RestAvailability)` here.
+  var json = %*{}
+
+  if totalSize =? totalSize:
+    json["totalSize"] = %totalSize
+
+  if freeSize =? freeSize:
+    json["freeSize"] = %freeSize
+
+  if duration =? duration:
+    json["duration"] = %duration
+
+  if minPrice =? minPrice:
+    json["minPrice"] = %minPrice
+
+  if maxCollateral =? maxCollateral:
+    json["maxCollateral"] = %maxCollateral
+
+  client.http.patch(url, $json)
+
+proc patchAvailability*(
+    client: CodexClient,
+    availabilityId: AvailabilityId,
+    totalSize, duration, minPrice, maxCollateral: ?UInt256 = UInt256.none
+): void =
+  let response = client.patchAvailabilityRaw(availabilityId, totalSize=totalSize, duration=duration, minPrice=minPrice, maxCollateral=maxCollateral)
+  doAssert response.status == "200 OK", "expected 200 OK, got " & response.status
+
 proc getAvailabilities*(client: CodexClient): ?!seq[Availability] =
   ## Call sales availability REST endpoint
   let url = client.baseurl & "/sales/availability"
   let body = client.http.getContent(url)
   seq[Availability].fromJson(body)
 
+proc getAvailabilityReservations*(client: CodexClient, availabilityId: AvailabilityId): ?!seq[Reservation] =
+  ## Retrieves Availability's Reservations
+  let url = client.baseurl & "/sales/availability/" & $availabilityId & "/reservations"
+  let body = client.http.getContent(url)
+  seq[Reservation].fromJson(body)
+
 proc close*(client: CodexClient) =
   client.http.close()
 

tests/integration/marketplacesuite.nim

@@ -53,7 +53,7 @@ template marketplacesuite*(name: string, body: untyped) =
         let provider = providers()[i].client
 
         discard provider.postAvailability(
-          size=datasetSize.u256, # should match 1 slot only
+          totalSize=datasetSize.u256, # should match 1 slot only
           duration=duration.u256,
           minPrice=300.u256,
           maxCollateral=200.u256

tests/integration/testIntegration.nim

@@ -1,5 +1,6 @@
 import std/options
 import std/sequtils
+import std/strutils
 import std/httpclient
 from pkg/libp2p import `==`
 import pkg/chronos
@@ -12,8 +13,16 @@ import ../contracts/time
 import ../contracts/deployment
 import ../codex/helpers
 import ../examples
+import ../codex/examples
 import ./twonodes
 
+proc findItem[T](items: seq[T], item: T): ?!T =
+  for tmp in items:
+    if tmp == item:
+      return success tmp
+
+  return failure("Not found")
+
 # For debugging you can enable logging output with debugX = true
 # You can also pass a string in same format like for the `--log-level` parameter
 # to enable custom logging levels for specific topics like: debug2 = "INFO; TRACE: marketplace"
@@ -38,7 +47,7 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
 
   test "node shows used and available space":
     discard client1.upload("some file contents").get
-    discard client1.postAvailability(size=12.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
+    discard client1.postAvailability(totalSize=12.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
     let space = client1.space().tryGet()
     check:
       space.totalBlocks == 2.uint
@@ -94,12 +103,12 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
       [cid1, cid2].allIt(it in list.mapIt(it.cid))
 
   test "node handles new storage availability":
-    let availability1 = client1.postAvailability(size=1.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
+    let availability1 = client1.postAvailability(totalSize=1.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
-    let availability2 = client1.postAvailability(size=4.u256, duration=5.u256, minPrice=6.u256, maxCollateral=7.u256).get
+    let availability2 = client1.postAvailability(totalSize=4.u256, duration=5.u256, minPrice=6.u256, maxCollateral=7.u256).get
     check availability1 != availability2
 
   test "node lists storage that is for sale":
-    let availability = client1.postAvailability(size=1.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
+    let availability = client1.postAvailability(totalSize=1.u256, duration=2.u256, minPrice=3.u256, maxCollateral=4.u256).get
     check availability in client1.getAvailabilities().get
 
   test "node handles storage request":
@@ -177,7 +186,7 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
     let size = 0xFFFFFF.u256
     let data = await RandomChunker.example(blocks=8)
     # client 2 makes storage available
-    discard client2.postAvailability(size=size, duration=20*60.u256, minPrice=300.u256, maxCollateral=300.u256)
+    let availability = client2.postAvailability(totalSize=size, duration=20*60.u256, minPrice=300.u256, maxCollateral=300.u256).get
 
     # client 1 requests storage
     let expiry = (await ethProvider.currentTime()) + 5*60
@@ -197,9 +206,13 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
     check purchase.error == none string
     let availabilities = client2.getAvailabilities().get
     check availabilities.len == 1
-    let newSize = availabilities[0].size
+    let newSize = availabilities[0].freeSize
     check newSize > 0 and newSize < size
 
+    let reservations = client2.getAvailabilityReservations(availability.id).get
+    check reservations.len == 5
+    check reservations[0].requestId == purchase.requestId
+
   test "node slots gets paid out":
     let size = 0xFFFFFF.u256
     let data = await RandomChunker.example(blocks = 8)
@@ -212,7 +225,7 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
 
     # client 2 makes storage available
     let startBalance = await token.balanceOf(account2)
-    discard client2.postAvailability(size=size, duration=20*60.u256, minPrice=300.u256, maxCollateral=300.u256).get
+    discard client2.postAvailability(totalSize=size, duration=20*60.u256, minPrice=300.u256, maxCollateral=300.u256).get
 
     # client 1 requests storage
     let expiry = (await ethProvider.currentTime()) + 5*60
@@ -263,8 +276,69 @@ twonodessuite "Integration tests", debug1 = false, debug2 = false:
 
     let responsePast = client1.requestStorageRaw(cid, duration=1.u256, reward=2.u256, proofProbability=3.u256, collateral=200.u256, expiry=currentTime-10)
     check responsePast.status == "400 Bad Request"
-    check responsePast.body == "Expiry needs to be in future"
+    check "Expiry needs to be in future" in responsePast.body
 
     let responseBefore = client1.requestStorageRaw(cid, duration=1.u256, reward=2.u256, proofProbability=3.u256, collateral=200.u256, expiry=currentTime+10)
     check responseBefore.status == "400 Bad Request"
-    check responseBefore.body == "Expiry has to be before the request's end (now + duration)"
+    check "Expiry has to be before the request's end (now + duration)" in responseBefore.body
+
+  test "updating non-existing availability":
+    let nonExistingResponse = client1.patchAvailabilityRaw(AvailabilityId.example, duration=100.u256.some, minPrice=200.u256.some, maxCollateral=200.u256.some)
+    check nonExistingResponse.status == "404 Not Found"
+
+  test "updating availability":
+    let availability = client1.postAvailability(totalSize=140000.u256, duration=200.u256, minPrice=300.u256, maxCollateral=300.u256).get
+
+    client1.patchAvailability(availability.id, duration=100.u256.some, minPrice=200.u256.some, maxCollateral=200.u256.some)
+
+    let updatedAvailability = (client1.getAvailabilities().get).findItem(availability).get
+    check updatedAvailability.duration == 100
+    check updatedAvailability.minPrice == 200
+    check updatedAvailability.maxCollateral == 200
+    check updatedAvailability.totalSize == 140000
+    check updatedAvailability.freeSize == 140000
+
+  test "updating availability - freeSize is not allowed to be changed":
+    let availability = client1.postAvailability(totalSize=140000.u256, duration=200.u256, minPrice=300.u256, maxCollateral=300.u256).get
+    let freeSizeResponse = client1.patchAvailabilityRaw(availability.id, freeSize=110000.u256.some)
+    check freeSizeResponse.status == "400 Bad Request"
+    check "not allowed" in  freeSizeResponse.body
+
+  test "updating availability - updating totalSize":
+    let availability = client1.postAvailability(totalSize=140000.u256, duration=200.u256, minPrice=300.u256, maxCollateral=300.u256).get
+    client1.patchAvailability(availability.id, totalSize=100000.u256.some)
+    let updatedAvailability = (client1.getAvailabilities().get).findItem(availability).get
+    check updatedAvailability.totalSize == 100000
+    check updatedAvailability.freeSize == 100000
+
+  test "updating availability - updating totalSize does not allow bellow utilized":
+    let originalSize = 0xFFFFFF.u256
+    let data = await RandomChunker.example(blocks=8)
+    let availability = client1.postAvailability(totalSize=originalSize, duration=20*60.u256, minPrice=300.u256, maxCollateral=300.u256).get
+
+    # Lets create storage request that will utilize some of the availability's space
+    let expiry = (await ethProvider.currentTime()) + 5*60
+    let cid = client2.upload(data).get
+    let id = client2.requestStorage(
+      cid,
+      duration=10*60.u256,
+      reward=400.u256,
+      proofProbability=3.u256,
+      expiry=expiry,
+      collateral=200.u256,
+      nodes = 5,
+      tolerance = 2).get
+
+    check eventually(client2.purchaseStateIs(id, "started"), timeout=5*60*1000)
+    let updatedAvailability = (client1.getAvailabilities().get).findItem(availability).get
+    check updatedAvailability.totalSize != updatedAvailability.freeSize
+
+    let utilizedSize = updatedAvailability.totalSize - updatedAvailability.freeSize
+    let totalSizeResponse = client1.patchAvailabilityRaw(availability.id, totalSize=(utilizedSize-1.u256).some)
+    check totalSizeResponse.status == "400 Bad Request"
+    check "totalSize must be larger then current totalSize" in totalSizeResponse.body
+
+    client1.patchAvailability(availability.id, totalSize=(originalSize + 20000).some)
+    let newUpdatedAvailability = (client1.getAvailabilities().get).findItem(availability).get
+    check newUpdatedAvailability.totalSize == originalSize + 20000
+    check newUpdatedAvailability.freeSize - updatedAvailability.freeSize == 20000

tests/integration/testmarketplace.nim

@@ -41,7 +41,7 @@ marketplacesuite "Marketplace payouts":
     discard providerApi.postAvailability(
       # make availability size small enough that we can't fill all the slots,
       # thus causing a cancellation
-      size=(data.len div 2).u256,
+      totalSize=(data.len div 2).u256,
       duration=duration.u256,
       minPrice=reward,
       maxCollateral=collateral)

tests/integration/testproofs.nim

@@ -230,7 +230,7 @@ marketplacesuite "Simulate invalid proofs":
   #   let slotSize = (DefaultBlockSize * 4.NBytes).Natural.u256
 
   #   discard provider0.client.postAvailability(
-  #     size=slotSize, # should match 1 slot only
+  #     totalSize=slotSize, # should match 1 slot only
   #     duration=totalPeriods.periods.u256,
   #     minPrice=300.u256,
   #     maxCollateral=200.u256
@@ -263,7 +263,7 @@ marketplacesuite "Simulate invalid proofs":
   #   # now add availability for providers 1 and 2, which should allow them to to
   #   # put the remaining slots in their queues
   #   discard provider1.client.postAvailability(
-  #     size=slotSize, # should match 1 slot only
+  #     totalSize=slotSize, # should match 1 slot only
   #     duration=totalPeriods.periods.u256,
   #     minPrice=300.u256,
   #     maxCollateral=200.u256
@@ -272,7 +272,7 @@ marketplacesuite "Simulate invalid proofs":
   #   check eventually filledSlotIds.len > 1
 
   #   discard provider2.client.postAvailability(
-  #     size=slotSize, # should match 1 slot only
+  #     totalSize=slotSize, # should match 1 slot only
   #     duration=totalPeriods.periods.u256,
   #     minPrice=300.u256,
   #     maxCollateral=200.u256

vendor/nim-presto

@@ -1 +1 @@
-Subproject commit 3984431dc0fc829eb668e12e57e90542b041d298
+Subproject commit c17bfdda2c60cf5fadb043feb22e328b7659c719