github.com/adnan-c/fabric_e2e_couchdb@v0.6.1-preview.0.20170228180935-21ce6b23cf91/orderer/sbft/simplebft/prepare.go (about)

     1  /*
     2  Copyright IBM Corp. 2016 All Rights Reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8  		 http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package simplebft
    18  
    19  import "reflect"
    20  
    21  func (s *SBFT) sendPrepare() {
    22  	p := s.cur.subject
    23  	s.broadcast(&Msg{&Msg_Prepare{&p}})
    24  }
    25  
    26  func (s *SBFT) handlePrepare(p *Subject, src uint64) {
    27  	if p.Seq.Seq < s.cur.subject.Seq.Seq {
    28  		// old message
    29  		return
    30  	}
    31  
    32  	if !reflect.DeepEqual(p, &s.cur.subject) {
    33  		log.Infof("replica %d: prepare does not match expected subject %v, got %v", s.id, &s.cur.subject, p)
    34  		return
    35  	}
    36  	if _, ok := s.cur.prep[src]; ok {
    37  		log.Infof("replica %d: duplicate prepare for %v from %d", s.id, *p.Seq, src)
    38  		return
    39  	}
    40  	s.cur.prep[src] = p
    41  	s.maybeSendCommit()
    42  }