docs(architecture diagram): use bridge

Update the architecture diagram to reflect the latest changes and understanding of the various
libraries

fix #4

docs/go-graphsync.puml

@@ -4,11 +4,51 @@
 
 package "go-ipld-prime" {
   interface Node {
+  }
+  interface NodeBuilder {
+  }
+  interface Path {
+  }
+  package traversal {
+    package selector {
+      interface Selector {
+      }
+      object "PackagePublicFunctions" as goSelectorPF {
+        ReifySelector(cidRootedSelector Node) (Selector, error)
+      }
+    }
+    interface AdvVisitFn {
+    }
+    class TraversalConfig {
+      ctx context.Context
+      linkLoader LinkLoader
+    }
+    class TraversalProgress {
+      TraverseInformatively(Node, Selector, AdvVisitFn)
+    }
 
+    TraversalProgress *-- TraversalConfig
   }
-  interface Selector {
+
+  package repose {
+    interface RawLoader {
+    }
+
+    interface MulticodecDecodeTable {
+    }
+
+    interface NodeBuilderChooser {
+    }
+
+    interface LinkLoader {
+    }
+
+    object "Package Public Functions" as goIPLDReposePf {
+      ComposeLinkLoader(RawLoader, NodeBuilderChooser, MulticodecDecodeTable)
+      EncoderDagCbor(Node, io.Writer)
+      DecodeDagCbor(NodeBuilder, io.Writer)
+    }  
   }
-  
 }
 
 package "go-graphsync" {
@@ -17,11 +57,16 @@ package "go-graphsync" {
       network : GraphySyncNetwork
       requestManager : RequestManager
       responseManager: ResponseManager
-      Request(p peer.ID, selector Selector, root Cid) chan Block
+      ipldBridge: IPLDBridge
+      rawLoader: RawLoader
+      
+      Request(ctx context.Context, p peer.ID, cidRootedSelector Node) chan Block
       ReceiveMessage(ctx context.Context, sender peer.ID, incoming GraphSyncMessage)
       ReceiveError(error)
     }
 
+    GraphSync *-- RawLoader
+
   package network {
     
     interface Receiver {
@@ -58,8 +103,9 @@ package "go-graphsync" {
   package requestmanager {
   class RequestManager {
     network : GraphSyncNetwork
+    ipldBridge: GraphSyncNetwork
 
-    SendRequest(p peer.ID, selector Selector, root Cid) chan Block
+    SendRequest(ctx context.Context, p peer.ID, cidRootedSelector Node) chan Block
     ProcessResponses(responses []GraphSyncResponse)
   }
   RequestManager *-- GraphSyncNetwork
@@ -69,10 +115,14 @@ package "go-graphsync" {
   package responsemanager {
   class ResponseManager {
     network : GraphySyncNetwork
+    ipldBridge: IPLDBridge
+    rawLoader: RawLoader
+
     ProcessRequests(p peer.ID, requests []GraphSyncRequests)
   }
   ResponseManager *-- GraphSyncNetwork
   GraphSync *-- ResponseManager
+  ResponseManager *-- RawLoader
   }
   package message {
     object "Package Public Functions" as goGraphSyncMessagePF {
@@ -111,8 +161,39 @@ package "go-graphsync" {
     
   }
 
+  package ipldbridge {
+    interface IPLDBridge {
+      ComposeLinkLoader(actualLoader RawLoader) LinkLoader
+	    ValidateSelectorSpec(cidRootedSelector ipld.Node) []error
+	    EncodeNode(ipld.Node) ([]byte, error)
+	    DecodeNode([]byte) (ipld.Node, error)
+	    DecodeSelectorSpec(cidRootedSelector ipld.Node) (ipld.Node, Selector, error)
+	    Traverse(ctx context.Context, loader LinkLoader, root ipld.Node, s Selector, fn AdvVisitFn) error
+    }
+
+    GraphSync *-- IPLDBridge
+    RequestManager *-- IPLDBridge
+    ResponseManager *-- IPLDBridge
+  
+    class ipldBridge {
+      nodeBuilderChooser: NodeBuilderChooser
+      multicodecTable: MulticodecDecodeTable
+    }
+
+    object "PackagePublicFunctions" as goIPLDBridge {
+      NewIPLDBridge(nodeBuilderChooser NodeBuilderChooser, multicodecTable MulticodecDecodeTable) IPLDBridge
+    }
+
+    IPLDBridge <|-- ipldBridge
+    goIPLDBridge .. ipldBridge 
+    ipldBridge *-- MulticodecDecodeTable
+    ipldBridge *-- NodeBuilderChooser
+    ipldBridge .. TraversalProgress
+    ipldBridge .. goSelectorPF
+    ipldBridge .. goIPLDReposePf
+  }
   object "PackagePublicFunctions" as goGraphsyncPf {
-    New(ctx context.Context, network GraphSyncNetwork) GraphSync
+    New(ctx context.Context, network GraphSyncNetwork, rawLoader RawLoader, multicodecDecodeTable MulticodecDecodeTable, nodeBuilderChooser NodeBuilderChooser) GraphSync
   }
 
 }
@@ -121,12 +202,18 @@ package "go-filecoin" {
   class "go-filecoin" {
     graphSync : GraphSync
     host: libp2pHost.Host
+    nodeBuilderChooser: NodeBuilderChooser
+    multicodecTable: MulticodecDecodeTable
+    rawLoader: RawLoader
   }
 
   "go-filecoin" *-- GraphSync
   "go-filecoin" .. goGraphsyncPf
   "go-filecoin" .. goGraphSyncNetworkPF
-  "go-filecoin" .. Selector
+  "go-filecoin" .. goIPLDBridge
+  "go-filecoin" *-- RawLoader
+  "go-filecoin" *-- MulticodecDecodeTable
+  "go-filecoin" *-- NodeBuilderChooser
 
 }