[contracts] replace totalNodes and nodeId by slots

codex/contracts/requests.nim

@@ -17,14 +17,13 @@ type
     duration*: UInt256
     proofProbability*: UInt256
     reward*: UInt256
+    slots*: uint64
   StorageContent* = object
     cid*: string
     erasure*: StorageErasure
     por*: StoragePoR
   StorageErasure* = object
     totalChunks*: uint64
-    totalNodes*: uint64
-    nodeId*: uint64
   StoragePoR* = object
     u*: seq[byte]
     publicKey*: seq[byte]
@@ -44,7 +43,8 @@ func fromTuple(_: type StorageAsk, tupl: tuple): StorageAsk =
     size: tupl[0],
     duration: tupl[1],
     proofProbability: tupl[2],
-    reward: tupl[3]
+    reward: tupl[3],
+    slots: tupl[4]
   )
 
 func fromTuple(_: type StorageContent, tupl: tuple): StorageContent =
@@ -56,9 +56,7 @@ func fromTuple(_: type StorageContent, tupl: tuple): StorageContent =
 
 func fromTuple(_: type StorageErasure, tupl: tuple): StorageErasure =
   StorageErasure(
-    totalChunks: tupl[0],
-    totalNodes: tupl[1],
-    nodeId: tupl[2]
+    totalChunks: tupl[0]
   )
 
 func fromTuple(_: type StoragePoR, tupl: tuple): StoragePoR =

codex/node.nim

@@ -268,8 +268,6 @@ proc requestStorage*(self: CodexNodeRef,
       cid: $encodedBlk.cid,
       erasure: StorageErasure(
         totalChunks: encoded.len.uint64,
-        totalNodes: 1,  # TODO: store on multiple nodes
-        nodeId: 0       # TODO: store on multiple nodes
       ),
       por: StoragePor(
         u: @[],         # TODO: PoR setup

tests/contracts/examples.nim

@@ -16,14 +16,13 @@ proc example*(_: type StorageRequest): StorageRequest =
       size: (1 * 1024 * 1024 * 1024).u256, # 1 Gigabyte
       duration: (10 * 60 * 60).u256, # 10 hours
       proofProbability: 4.u256, # require a proof roughly once every 4 periods
-      reward: 84.u256
+      reward: 84.u256,
+      slots: 42
     ),
     content: StorageContent(
       cid: "zb2rhheVmk3bLks5MgzTqyznLu1zqGH5jrfTA1eAZXrjx7Vob",
       erasure: StorageErasure(
         totalChunks: 12,
-        totalNodes: 4,
-        nodeId: 3
       ),
       por: StoragePor(
         u: @(array[480, byte].example),