mirror of
https://github.com/etcd-io/etcd.git
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306e75a96f
Verifiy the behavior in various v1 and v2 conf change operations. This also includes various fixups, notably it adds protection against transitioning in and out of new configs when this is not permissible. There are more threads to pull, but those are left for future commits.
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
// Copyright 2019 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package rafttest
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import (
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"fmt"
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"strconv"
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"testing"
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"github.com/cockroachdb/datadriven"
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"go.etcd.io/etcd/raft"
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"go.etcd.io/etcd/raft/raftpb"
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)
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func (env *InteractionEnv) handleDeliverMsgs(t *testing.T, d datadriven.TestData) error {
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var rs []Recipient
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for _, arg := range d.CmdArgs {
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if len(arg.Vals) == 0 {
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id, err := strconv.ParseUint(arg.Key, 10, 64)
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if err != nil {
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t.Fatal(err)
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}
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rs = append(rs, Recipient{ID: id})
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}
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for i := range arg.Vals {
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switch arg.Key {
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case "drop":
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var id uint64
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arg.Scan(t, i, &id)
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var found bool
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for _, r := range rs {
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if r.ID == id {
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found = true
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}
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}
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if found {
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t.Fatalf("can't both deliver and drop msgs to %d", id)
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}
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rs = append(rs, Recipient{ID: id, Drop: true})
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}
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}
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}
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if n := env.DeliverMsgs(rs...); n == 0 {
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env.Output.WriteString("no messages\n")
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}
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return nil
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}
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type Recipient struct {
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ID uint64
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Drop bool
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}
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// DeliverMsgs goes through env.Messages and, depending on the Drop flag,
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// delivers or drops messages to the specified Recipients. Returns the
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// number of messages handled (i.e. delivered or dropped). A handled message
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// is removed from env.Messages.
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func (env *InteractionEnv) DeliverMsgs(rs ...Recipient) int {
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var n int
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for _, r := range rs {
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var msgs []raftpb.Message
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msgs, env.Messages = splitMsgs(env.Messages, r.ID)
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n += len(msgs)
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for _, msg := range msgs {
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if r.Drop {
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fmt.Fprint(env.Output, "dropped: ")
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}
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fmt.Fprintln(env.Output, raft.DescribeMessage(msg, defaultEntryFormatter))
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if r.Drop {
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// NB: it's allowed to drop messages to nodes that haven't been instantiated yet,
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// we haven't used msg.To yet.
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continue
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}
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toIdx := int(msg.To - 1)
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if err := env.Nodes[toIdx].Step(msg); err != nil {
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env.Output.WriteString(err.Error())
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}
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}
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}
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return n
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}
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