github.com/bartle-stripe/trillian@v1.2.1/testonly/hammer/mapreplay/main.go (about)

     1  // Copyright 2018 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // mapreplay replays a log of Trillian Map requests.
    16  package main
    17  
    18  import (
    19  	"context"
    20  	"flag"
    21  	"os"
    22  	"regexp"
    23  	"strconv"
    24  	"strings"
    25  
    26  	"github.com/golang/glog"
    27  	"github.com/google/trillian"
    28  	"github.com/google/trillian/testonly/hammer"
    29  	"google.golang.org/grpc"
    30  )
    31  
    32  var (
    33  	mapIDs     = flag.String("map_ids", "", "Comma-separated list of mapID:mapID pairs to convert")
    34  	rpcServer  = flag.String("rpc_server", "", "Server address:port; leave blank for dry-run mode")
    35  	replayFrom = flag.String("replay_from", "", "File to record operations in")
    36  )
    37  
    38  func main() {
    39  	flag.Parse()
    40  	defer glog.Flush()
    41  	ctx := context.Background()
    42  
    43  	if *replayFrom == "" {
    44  		glog.Exit("Need --replay_from option")
    45  	}
    46  	f, err := os.Open(*replayFrom)
    47  	if err != nil {
    48  		glog.Exitf("Failed to open replay file: %v", err)
    49  	}
    50  
    51  	var cl trillian.TrillianMapClient
    52  	if *rpcServer != "" {
    53  		c, err := grpc.Dial(*rpcServer, grpc.WithInsecure())
    54  		if err != nil {
    55  			glog.Exitf("Failed to create map client conn: %v", err)
    56  		}
    57  		cl = trillian.NewTrillianMapClient(c)
    58  	}
    59  
    60  	pairRE := regexp.MustCompile(`(\d+):(\d+)`)
    61  	mapmap := make(map[int64]int64)
    62  	mIDs := strings.Split(*mapIDs, ",")
    63  	for _, pair := range mIDs {
    64  		if pair == "" {
    65  			continue
    66  		}
    67  		results := pairRE.FindStringSubmatch(pair)
    68  		if len(results) < 3 {
    69  			glog.Exitf("Malformed mapID mapping in %q", *mapIDs)
    70  		}
    71  		from, err := strconv.ParseInt(results[1], 10, 64)
    72  		if err != nil {
    73  			glog.Exitf("Malformed mapID mapping in %q", *mapIDs)
    74  		}
    75  		to, err := strconv.ParseInt(results[2], 10, 64)
    76  		if err != nil {
    77  			glog.Exitf("Malformed mapID mapping in %q", *mapIDs)
    78  		}
    79  		mapmap[from] = to
    80  	}
    81  	hammer.ReplayFile(ctx, f, cl, mapmap)
    82  }