FABJ-441 Proto updates

Change-Id: Ia120efdb13918e0b620ab28af5bf9ba3780f95f8
Signed-off-by: rickr <cr22rc@gmail.com>

Author: cr22rc

src/main/proto/orderer/ab.proto

@@ -30,9 +30,9 @@ message BroadcastResponse {
     string info = 2;
 }
 
-message SeekNewest { }
+message SeekNewest {}
 
-message SeekOldest { }
+message SeekOldest {}
 
 message SeekSpecified {
     uint64 number = 1;
@@ -49,19 +49,33 @@ message SeekPosition {
 // SeekInfo specifies the range of requested blocks to return
 // If the start position is not found, an error is immediately returned
 // Otherwise, blocks are returned until a missing block is encountered, then behavior is dictated
-// by the SeekBehavior specified.  If BLOCK_UNTIL_READY is specified, the reply will block until
-// the requested blocks are available, if FAIL_IF_NOT_READY is specified, the reply will return an
-// error indicating that the block is not found.  To request that all blocks be returned indefinitely
-// as they are created, behavior should be set to BLOCK_UNTIL_READY and the stop should be set to
-// specified with a number of MAX_UINT64
+// by the SeekBehavior specified.
 message SeekInfo {
+    // If BLOCK_UNTIL_READY is specified, the reply will block until the requested blocks are available,
+    // if FAIL_IF_NOT_READY is specified, the reply will return an error indicating that the block is not
+    // found.  To request that all blocks be returned indefinitely as they are created, behavior should be
+    // set to BLOCK_UNTIL_READY and the stop should be set to specified with a number of MAX_UINT64
     enum SeekBehavior {
         BLOCK_UNTIL_READY = 0;
         FAIL_IF_NOT_READY = 1;
     }
-    SeekPosition start = 1;    // The position to start the deliver from
-    SeekPosition stop = 2;     // The position to stop the deliver
+
+    // SeekErrorTolerance indicates to the server how block provider errors should be tolerated.  By default,
+    // if the deliver service detects a problem in the underlying block source (typically, in the orderer,
+    // a consenter error), it will begin to reject deliver requests.  This is to prevent a client from waiting
+    // for blocks from an orderer which is stuck in an errored state.  This is almost always the desired behavior
+    // and clients should stick with the default STRICT checking behavior.  However, in some scenarios, particularly
+    // when attempting to recover from a crash or other corruption, it's desirable to force an orderer to respond
+    // with blocks on a best effort basis, even if the backing consensus implementation is in an errored state.
+    // In this case, set the SeekErrorResponse to BEST_EFFORT to ignore the consenter errors.
+    enum SeekErrorResponse {
+        STRICT = 0;
+        BEST_EFFORT = 1;
+    }
+    SeekPosition start = 1; // The position to start the deliver from
+    SeekPosition stop = 2; // The position to stop the deliver
     SeekBehavior behavior = 3; // The behavior when a missing block is encountered
+    SeekErrorResponse error_response = 4; // How to respond to errors reported to the deliver service
 }
 
 message DeliverResponse {

src/main/proto/orderer/configuration.proto

@@ -23,15 +23,6 @@ package protos;
 import "peer/proposal.proto";
 import "peer/proposal_response.proto";
 
-message PeerID {
-    string name = 1;
-}
-
-message PeerEndpoint {
-    PeerID id = 1;
-    string address = 2;
-}
-
 service Endorser {
 	rpc ProcessProposal(SignedProposal) returns (ProposalResponse) {}
 }