channeldb+kvdb: an extended STM on top of etcd clientv3

This commit adds an extended STM, similar to what available in etcd's
clientv3 module. This incarnation of said STM supports additional
features, like positioning in key intervals while taking into account
deletes and writes as well. This is a preliminary work to support all
features of the kvdb interface.
This commit is contained in:
Andras Banki-Horvath 2020-02-18 19:26:57 +01:00
parent a8d5c32983
commit 137dee04e8
7 changed files with 1414 additions and 3 deletions

55
channeldb/kvdb/etcd/db.go Normal file
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package etcd
import (
"time"
"github.com/coreos/etcd/clientv3"
)
const (
// etcdConnectionTimeout is the timeout until successful connection to the
// etcd instance.
etcdConnectionTimeout = 10 * time.Second
)
// db holds a reference to the etcd client connection.
type db struct {
cli *clientv3.Client
}
// BackendConfig holds and etcd backend config and connection parameters.
type BackendConfig struct {
// Host holds the peer url of the etcd instance.
Host string
// User is the username for the etcd peer.
User string
// Pass is the password for the etcd peer.
Pass string
}
// newEtcdBackend returns a db object initialized with the passed backend
// config. If etcd connection cannot be estabished, then returns error.
func newEtcdBackend(config BackendConfig) (*db, error) {
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{config.Host},
DialTimeout: etcdConnectionTimeout,
Username: config.User,
Password: config.Pass,
})
if err != nil {
return nil, err
}
backend := &db{
cli: cli,
}
return backend, nil
}
// Close closes the db, but closing the underlying etcd client connection.
func (db *db) Close() error {
return db.cli.Close()
}

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package etcd
import (
"fmt"
"net"
"net/url"
"time"
"github.com/coreos/etcd/embed"
)
const (
// readyTimeout is the time until the embedded etcd instance should start.
readyTimeout = 10 * time.Second
)
// getFreePort returns a random open TCP port.
func getFreePort() int {
ln, err := net.Listen("tcp", "[::]:0")
if err != nil {
panic(err)
}
port := ln.Addr().(*net.TCPAddr).Port
err = ln.Close()
if err != nil {
panic(err)
}
return port
}
// NewEmbeddedEtcdInstance creates an embedded etcd instance for testing,
// listening on random open ports. Returns the backend config and a cleanup
// func that will stop the etcd instance.
func NewEmbeddedEtcdInstance(path string) (*BackendConfig, func(), error) {
cfg := embed.NewConfig()
cfg.Dir = path
// To ensure that we can submit large transactions.
cfg.MaxTxnOps = 1000
// Listen on random free ports.
clientURL := fmt.Sprintf("127.0.0.1:%d", getFreePort())
peerURL := fmt.Sprintf("127.0.0.1:%d", getFreePort())
cfg.LCUrls = []url.URL{{Host: clientURL}}
cfg.LPUrls = []url.URL{{Host: peerURL}}
etcd, err := embed.StartEtcd(cfg)
if err != nil {
return nil, nil, err
}
select {
case <-etcd.Server.ReadyNotify():
case <-time.After(readyTimeout):
etcd.Close()
return nil, nil,
fmt.Errorf("etcd failed to start after: %v", readyTimeout)
}
connConfig := &BackendConfig{
Host: "http://" + peerURL,
User: "user",
Pass: "pass",
}
return connConfig, func() {
etcd.Close()
}, nil
}

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package etcd
import (
"context"
"io/ioutil"
"os"
"testing"
"time"
"github.com/coreos/etcd/clientv3"
)
const (
// testEtcdTimeout is used for all RPC calls initiated by the test fixture.
testEtcdTimeout = 5 * time.Second
)
// EtcdTestFixture holds internal state of the etcd test fixture.
type EtcdTestFixture struct {
t *testing.T
cli *clientv3.Client
config *BackendConfig
cleanup func()
}
// NewTestEtcdInstance creates an embedded etcd instance for testing, listening
// on random open ports. Returns the connection config and a cleanup func that
// will stop the etcd instance.
func NewTestEtcdInstance(t *testing.T, path string) (*BackendConfig, func()) {
t.Helper()
config, cleanup, err := NewEmbeddedEtcdInstance(path)
if err != nil {
t.Fatalf("error while staring embedded etcd instance: %v", err)
}
return config, cleanup
}
// NewTestEtcdTestFixture creates a new etcd-test fixture. This is helper
// object to facilitate etcd tests and ensure pre and post conditions.
func NewEtcdTestFixture(t *testing.T) *EtcdTestFixture {
tmpDir, err := ioutil.TempDir("", "etcd")
if err != nil {
t.Fatalf("unable to create temp dir: %v", err)
}
config, etcdCleanup := NewTestEtcdInstance(t, tmpDir)
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{config.Host},
Username: config.User,
Password: config.Pass,
})
if err != nil {
os.RemoveAll(tmpDir)
t.Fatalf("unable to create etcd test fixture: %v", err)
}
return &EtcdTestFixture{
t: t,
cli: cli,
config: config,
cleanup: func() {
etcdCleanup()
os.RemoveAll(tmpDir)
},
}
}
// Put puts a string key/value into the test etcd database.
func (f *EtcdTestFixture) Put(key, value string) {
ctx, cancel := context.WithTimeout(context.TODO(), testEtcdTimeout)
defer cancel()
_, err := f.cli.Put(ctx, key, value)
if err != nil {
f.t.Fatalf("etcd test fixture failed to put: %v", err)
}
}
// Get queries a key and returns the stored value from the test etcd database.
func (f *EtcdTestFixture) Get(key string) string {
ctx, cancel := context.WithTimeout(context.TODO(), testEtcdTimeout)
defer cancel()
resp, err := f.cli.Get(ctx, key)
if err != nil {
f.t.Fatalf("etcd test fixture failed to put: %v", err)
}
if len(resp.Kvs) > 0 {
return string(resp.Kvs[0].Value)
}
return ""
}
// Dump scans and returns all key/values from the test etcd database.
func (f *EtcdTestFixture) Dump() map[string]string {
ctx, cancel := context.WithTimeout(context.TODO(), testEtcdTimeout)
defer cancel()
resp, err := f.cli.Get(ctx, "", clientv3.WithPrefix())
if err != nil {
f.t.Fatalf("etcd test fixture failed to put: %v", err)
}
result := make(map[string]string)
for _, kv := range resp.Kvs {
result[string(kv.Key)] = string(kv.Value)
}
return result
}
// BackendConfig returns the backend config for connecting to theembedded
// etcd instance.
func (f *EtcdTestFixture) BackendConfig() BackendConfig {
return *f.config
}
// Cleanup should be called at test fixture teardown to stop the embedded
// etcd instance and remove all temp db files form the filesystem.
func (f *EtcdTestFixture) Cleanup() {
f.cleanup()
}

728
channeldb/kvdb/etcd/stm.go Normal file
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package etcd
import (
"context"
"fmt"
"math"
"strings"
v3 "github.com/coreos/etcd/clientv3"
)
// KV stores a key/value pair.
type KV struct {
key string
val string
}
// STM is an interface for software transactional memory.
// All calls that return error will do so only if STM is manually handled and
// abort the apply closure otherwise. In both case the returned error is a
// DatabaseError.
type STM interface {
// Get returns the value for a key and inserts the key in the txn's read
// set. Returns nil if there's no matching key, or the key is empty.
Get(key string) ([]byte, error)
// Put adds a value for a key to the txn's write set.
Put(key, val string)
// Del adds a delete operation for the key to the txn's write set.
Del(key string)
// First returns the first k/v that begins with prefix or nil if there's
// no such k/v pair. If the key is found it is inserted to the txn's
// read set. Returns nil if there's no match.
First(prefix string) (*KV, error)
// Last returns the last k/v that begins with prefix or nil if there's
// no such k/v pair. If the key is found it is inserted to the txn's
// read set. Returns nil if there's no match.
Last(prefix string) (*KV, error)
// Prev returns the previous k/v before key that begins with prefix or
// nil if there's no such k/v. If the key is found it is inserted to the
// read set. Returns nil if there's no match.
Prev(prefix, key string) (*KV, error)
// Next returns the next k/v after key that begins with prefix or nil
// if there's no such k/v. If the key is found it is inserted to the
// txn's read set. Returns nil if there's no match.
Next(prefix, key string) (*KV, error)
// Seek will return k/v at key beginning with prefix. If the key doesn't
// exists Seek will return the next k/v after key beginning with prefix.
// If a matching k/v is found it is inserted to the txn's read set. Returns
// nil if there's no match.
Seek(prefix, key string) (*KV, error)
// OnCommit calls the passed callback func upon commit.
OnCommit(func())
// Commit attempts to apply the txn's changes to the server.
// Commit may return CommitError if transaction is outdated and needs retry.
Commit() error
// Rollback emties the read and write sets such that a subsequent commit
// won't alter the database.
Rollback()
}
// CommitError is used to check if there was an error
// due to stale data in the transaction.
type CommitError struct{}
// Error returns a static string for CommitError for
// debugging/logging purposes.
func (e CommitError) Error() string {
return "commit failed"
}
// DatabaseError is used to wrap errors that are not
// related to stale data in the transaction.
type DatabaseError struct {
msg string
err error
}
// Unwrap returns the wrapped error in a DatabaseError.
func (e *DatabaseError) Unwrap() error {
return e.err
}
// Error simply converts DatabaseError to a string that
// includes both the message and the wrapped error.
func (e DatabaseError) Error() string {
return fmt.Sprintf("etcd error: %v - %v", e.msg, e.err)
}
// stmGet is the result of a read operation,
// a value and the mod revision of the key/value.
type stmGet struct {
val string
rev int64
}
// readSet stores all reads done in an STM.
type readSet map[string]stmGet
// stmPut stores a value and an operation (put/delete).
type stmPut struct {
val string
op v3.Op
}
// writeSet stroes all writes done in an STM.
type writeSet map[string]stmPut
// stm implements repeatable-read software transactional memory
// over etcd.
type stm struct {
// client is an etcd client handling all RPC communications
// to the etcd instance/cluster.
client *v3.Client
// manual is set to true for manual transactions which don't
// execute in the STM run loop.
manual bool
// options stores optional settings passed by the user.
options *STMOptions
// prefetch hold prefetched key values and revisions.
prefetch readSet
// rset holds read key values and revisions.
rset readSet
// wset holds overwritten keys and their values.
wset writeSet
// getOpts are the opts used for gets.
getOpts []v3.OpOption
// revision stores the snapshot revision after first read.
revision int64
// onCommit gets called upon commit.
onCommit func()
}
// STMOptions can be used to pass optional settings
// when an STM is created.
type STMOptions struct {
// ctx holds an externally provided abort context.
ctx context.Context
}
// STMOptionFunc is a function that updates the passed STMOptions.
type STMOptionFunc func(*STMOptions)
// WithAbortContext specifies the context for permanently
// aborting the transaction.
func WithAbortContext(ctx context.Context) STMOptionFunc {
return func(so *STMOptions) {
so.ctx = ctx
}
}
// RunSTM runs the apply function by creating an STM using serializable snapshot
// isolation, passing it to the apply and handling commit errors and retries.
func RunSTM(cli *v3.Client, apply func(STM) error, so ...STMOptionFunc) error {
return runSTM(makeSTM(cli, false, so...), apply)
}
// NewSTM creates a new STM instance, using serializable snapshot isolation.
func NewSTM(cli *v3.Client, so ...STMOptionFunc) STM {
return makeSTM(cli, true, so...)
}
// makeSTM is the actual constructor of the stm. It first apply all passed
// options then creates the stm object and resets it before returning.
func makeSTM(cli *v3.Client, manual bool, so ...STMOptionFunc) *stm {
opts := &STMOptions{
ctx: cli.Ctx(),
}
// Apply all functional options.
for _, fo := range so {
fo(opts)
}
s := &stm{
client: cli,
manual: manual,
options: opts,
prefetch: make(map[string]stmGet),
}
// Reset read and write set.
s.Rollback()
return s
}
// runSTM implements the run loop of the STM, running the apply func, catching
// errors and handling commit. The loop will quit on every error except
// CommitError which is used to indicate a necessary retry.
func runSTM(s *stm, apply func(STM) error) error {
out := make(chan error, 1)
go func() {
defer func() {
// Recover DatabaseError panics so
// we can return them.
if r := recover(); r != nil {
e, ok := r.(DatabaseError)
if !ok {
// Unknown panic.
panic(r)
}
// Return the error.
out <- e.Unwrap()
}
}()
var err error
// In a loop try to apply and commit and roll back
// if the database has changed (CommitError).
for {
// Abort STM if there was an application error.
if err = apply(s); err != nil {
break
}
err = s.Commit()
// Re-apply only upon commit error
// (meaning the database was changed).
if _, ok := err.(CommitError); !ok {
// Anything that's not a CommitError
// aborts the STM run loop.
break
}
// Rollback before trying to re-apply.
s.Rollback()
}
// Return the error to the caller.
out <- err
}()
return <-out
}
// add inserts a txn response to the read set. This is useful when the txn
// fails due to conflict where the txn response can be used to prefetch
// key/values.
func (rs readSet) add(txnResp *v3.TxnResponse) {
for _, resp := range txnResp.Responses {
getResp := (*v3.GetResponse)(resp.GetResponseRange())
for _, kv := range getResp.Kvs {
rs[string(kv.Key)] = stmGet{
val: string(kv.Value),
rev: kv.ModRevision,
}
}
}
}
// gets is a helper to create an op slice for transaction
// construction.
func (rs readSet) gets() []v3.Op {
ops := make([]v3.Op, 0, len(rs))
for k := range rs {
ops = append(ops, v3.OpGet(k))
}
return ops
}
// cmps returns a cmp list testing values in read set didn't change.
func (rs readSet) cmps() []v3.Cmp {
cmps := make([]v3.Cmp, 0, len(rs))
for key, getValue := range rs {
cmps = append(cmps, v3.Compare(v3.ModRevision(key), "=", getValue.rev))
}
return cmps
}
// cmps returns a cmp list testing no writes have happened past rev.
func (ws writeSet) cmps(rev int64) []v3.Cmp {
cmps := make([]v3.Cmp, 0, len(ws))
for key := range ws {
cmps = append(cmps, v3.Compare(v3.ModRevision(key), "<", rev))
}
return cmps
}
// puts is the list of ops for all pending writes.
func (ws writeSet) puts() []v3.Op {
puts := make([]v3.Op, 0, len(ws))
for _, v := range ws {
puts = append(puts, v.op)
}
return puts
}
// fetch is a helper to fetch key/value given options. If a value is returned
// then fetch will try to fix the STM's snapshot revision (if not already set).
// We'll also cache the returned key/value in the read set.
func (s *stm) fetch(key string, opts ...v3.OpOption) ([]KV, error) {
resp, err := s.client.Get(
s.options.ctx, key, append(opts, s.getOpts...)...,
)
if err != nil {
dbErr := DatabaseError{
msg: "stm.fetch() failed",
err: err,
}
// Do not panic when executing a manual transaction.
if s.manual {
return nil, dbErr
}
// Panic when executing inside the STM runloop.
panic(dbErr)
}
// Set revison and serializable options upon first fetch
// for any subsequent fetches.
if s.getOpts == nil {
s.revision = resp.Header.Revision
s.getOpts = []v3.OpOption{
v3.WithRev(s.revision),
v3.WithSerializable(),
}
}
var result []KV
// Fill the read set with key/values returned.
for _, kv := range resp.Kvs {
// Remove from prefetch.
key := string(kv.Key)
val := string(kv.Value)
delete(s.prefetch, key)
// Add to read set.
s.rset[key] = stmGet{
val: val,
rev: kv.ModRevision,
}
result = append(result, KV{key, val})
}
return result, nil
}
// Get returns the value for key. If there's no such
// key/value in the database or the passed key is empty
// Get will return nil.
func (s *stm) Get(key string) ([]byte, error) {
if key == "" {
return nil, nil
}
// Return freshly written value if present.
if put, ok := s.wset[key]; ok {
if put.op.IsDelete() {
return nil, nil
}
return []byte(put.val), nil
}
// Populate read set if key is present in
// the prefetch set.
if getValue, ok := s.prefetch[key]; ok {
delete(s.prefetch, key)
s.rset[key] = getValue
}
// Return value if alread in read set.
if getVal, ok := s.rset[key]; ok {
return []byte(getVal.val), nil
}
// Fetch and return value.
kvs, err := s.fetch(key)
if err != nil {
return nil, err
}
if len(kvs) > 0 {
return []byte(kvs[0].val), nil
}
// Return empty result if key not in DB.
return nil, nil
}
// First returns the first key/value matching prefix. If there's no key starting
// with prefix, Last will return nil.
func (s *stm) First(prefix string) (*KV, error) {
return s.next(prefix, prefix, true)
}
// Last returns the last key/value with prefix. If there's no key starting with
// prefix, Last will return nil.
func (s *stm) Last(prefix string) (*KV, error) {
// As we don't know the full range, fetch the last
// key/value with this prefix first.
resp, err := s.fetch(prefix, v3.WithLastKey()...)
if err != nil {
return nil, err
}
var (
kv KV
found bool
)
if len(resp) > 0 {
kv = resp[0]
found = true
}
// Now make sure there's nothing in the write set
// that is a better match, meaning it has the same
// prefix but is greater or equal than the current
// best candidate. Note that this is not efficient
// when the write set is large!
for k, put := range s.wset {
if put.op.IsDelete() {
continue
}
if strings.HasPrefix(k, prefix) && k >= kv.key {
kv.key = k
kv.val = put.val
found = true
}
}
if found {
return &kv, nil
}
return nil, nil
}
// Prev returns the prior key/value before key (with prefix). If there's no such
// key Next will return nil.
func (s *stm) Prev(prefix, startKey string) (*KV, error) {
var result KV
fetchKey := startKey
matchFound := false
for {
// Ask etcd to retrieve one key that is a
// match in descending order from the passed key.
opts := []v3.OpOption{
v3.WithRange(fetchKey),
v3.WithSort(v3.SortByKey, v3.SortDescend),
v3.WithLimit(1),
}
kvs, err := s.fetch(prefix, opts...)
if err != nil {
return nil, err
}
if len(kvs) == 0 {
break
}
kv := &kvs[0]
// WithRange and WithPrefix can't be used
// together, so check prefix here. If the
// returned key no longer has the prefix,
// then break out.
if !strings.HasPrefix(kv.key, prefix) {
break
}
// Fetch the prior key if this is deleted.
if put, ok := s.wset[kv.key]; ok && put.op.IsDelete() {
fetchKey = kv.key
continue
}
result = *kv
matchFound = true
break
}
// Closre holding all checks to find a possibly
// better match.
matches := func(key string) bool {
if !strings.HasPrefix(key, prefix) {
return false
}
if !matchFound {
return key < startKey
}
// matchFound == true
return result.key <= key && key < startKey
}
// Now go trough the write set and check
// if there's an even better match.
for k, put := range s.wset {
if !put.op.IsDelete() && matches(k) {
result.key = k
result.val = put.val
matchFound = true
}
}
if !matchFound {
return nil, nil
}
return &result, nil
}
// Next returns the next key/value after key (with prefix). If there's no such
// key Next will return nil.
func (s *stm) Next(prefix string, key string) (*KV, error) {
return s.next(prefix, key, false)
}
// Seek "seeks" to the key (with prefix). If the key doesn't exists it'll get
// the next key with the same prefix. If no key fills this criteria, Seek will
// return nil.
func (s *stm) Seek(prefix, key string) (*KV, error) {
return s.next(prefix, key, true)
}
// next will try to retrieve the next match that has prefix and starts with the
// passed startKey. If includeStartKey is set to true, it'll return the value
// of startKey (essentially implementing seek).
func (s *stm) next(prefix, startKey string, includeStartKey bool) (*KV, error) {
var result KV
fetchKey := startKey
firstFetch := true
matchFound := false
for {
// Ask etcd to retrieve one key that is a
// match in ascending order from the passed key.
opts := []v3.OpOption{
v3.WithFromKey(),
v3.WithSort(v3.SortByKey, v3.SortAscend),
v3.WithLimit(1),
}
// By default we include the start key too
// if it is a full match.
if includeStartKey && firstFetch {
firstFetch = false
} else {
// If we'd like to retrieve the first key
// after the start key.
fetchKey += "\x00"
}
kvs, err := s.fetch(fetchKey, opts...)
if err != nil {
return nil, err
}
if len(kvs) == 0 {
break
}
kv := &kvs[0]
// WithRange and WithPrefix can't be used
// together, so check prefix here. If the
// returned key no longer has the prefix,
// then break the fetch loop.
if !strings.HasPrefix(kv.key, prefix) {
break
}
// Move on to fetch starting with the next
// key if this one is marked deleted.
if put, ok := s.wset[kv.key]; ok && put.op.IsDelete() {
fetchKey = kv.key
continue
}
result = *kv
matchFound = true
break
}
// Closure holding all checks to find a possibly
// better match.
matches := func(k string) bool {
if !strings.HasPrefix(k, prefix) {
return false
}
if includeStartKey && !matchFound {
return startKey <= k
}
if !includeStartKey && !matchFound {
return startKey < k
}
if includeStartKey && matchFound {
return startKey <= k && k <= result.key
}
// !includeStartKey && matchFound.
return startKey < k && k <= result.key
}
// Now go trough the write set and check
// if there's an even better match.
for k, put := range s.wset {
if !put.op.IsDelete() && matches(k) {
result.key = k
result.val = put.val
matchFound = true
}
}
if !matchFound {
return nil, nil
}
return &result, nil
}
// Put sets the value of the passed key. The actual put will happen upon commit.
func (s *stm) Put(key, val string) {
s.wset[key] = stmPut{
val: val,
op: v3.OpPut(key, val),
}
}
// Del marks a key as deleted. The actual delete will happen upon commit.
func (s *stm) Del(key string) {
s.wset[key] = stmPut{
val: "",
op: v3.OpDelete(key),
}
}
// OnCommit sets the callback that is called upon committing the STM
// transaction.
func (s *stm) OnCommit(cb func()) {
s.onCommit = cb
}
// Commit builds the final transaction and tries to execute it. If commit fails
// because the keys have changed return a CommitError, otherwise return a
// DatabaseError.
func (s *stm) Commit() error {
// Create the compare set.
cmps := append(s.rset.cmps(), s.wset.cmps(s.revision+1)...)
// Create a transaction with the optional abort context.
txn := s.client.Txn(s.options.ctx)
// If the compare set holds, try executing the puts.
txn = txn.If(cmps...)
txn = txn.Then(s.wset.puts()...)
// Prefetch keys in case of conflict to save
// a round trip to etcd.
txn = txn.Else(s.rset.gets()...)
txnresp, err := txn.Commit()
if err != nil {
return DatabaseError{
msg: "stm.Commit() failed",
err: err,
}
}
// Call the commit callback if the transaction
// was successful.
if txnresp.Succeeded {
if s.onCommit != nil {
s.onCommit()
}
return nil
}
// Load prefetch before if commit failed.
s.rset.add(txnresp)
s.prefetch = s.rset
// Return CommitError indicating that the transaction
// can be retried.
return CommitError{}
}
// Rollback resets the STM. This is useful for uncommitted transaction rollback
// and also used in the STM main loop to reset state if commit fails.
func (s *stm) Rollback() {
s.rset = make(map[string]stmGet)
s.wset = make(map[string]stmPut)
s.getOpts = nil
s.revision = math.MaxInt64 - 1
}

View File

@ -0,0 +1,342 @@
package etcd
import (
"errors"
"testing"
"github.com/stretchr/testify/assert"
)
func reverseKVs(a []KV) []KV {
for i, j := 0, len(a)-1; i < j; i, j = i+1, j-1 {
a[i], a[j] = a[j], a[i]
}
return a
}
func TestPutToEmpty(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(f.BackendConfig())
assert.NoError(t, err)
apply := func(stm STM) error {
stm.Put("123", "abc")
return nil
}
err = RunSTM(db.cli, apply)
assert.NoError(t, err)
assert.Equal(t, "abc", f.Get("123"))
}
func TestGetPutDel(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.cleanup()
testKeyValues := []KV{
{"a", "1"},
{"b", "2"},
{"c", "3"},
{"d", "4"},
{"e", "5"},
}
for _, kv := range testKeyValues {
f.Put(kv.key, kv.val)
}
db, err := newEtcdBackend(f.BackendConfig())
assert.NoError(t, err)
apply := func(stm STM) error {
// Get some non existing keys.
v, err := stm.Get("")
assert.NoError(t, err)
assert.Nil(t, v)
v, err = stm.Get("x")
assert.NoError(t, err)
assert.Nil(t, v)
// Get all existing keys.
for _, kv := range testKeyValues {
v, err = stm.Get(kv.key)
assert.NoError(t, err)
assert.Equal(t, []byte(kv.val), v)
}
// Overwrite, then delete an existing key.
stm.Put("c", "6")
v, err = stm.Get("c")
assert.NoError(t, err)
assert.Equal(t, []byte("6"), v)
stm.Del("c")
v, err = stm.Get("c")
assert.NoError(t, err)
assert.Nil(t, v)
// Re-add the deleted key.
stm.Put("c", "7")
v, err = stm.Get("c")
assert.NoError(t, err)
assert.Equal(t, []byte("7"), v)
// Add a new key.
stm.Put("x", "x")
v, err = stm.Get("x")
assert.NoError(t, err)
assert.Equal(t, []byte("x"), v)
return nil
}
err = RunSTM(db.cli, apply)
assert.NoError(t, err)
assert.Equal(t, "1", f.Get("a"))
assert.Equal(t, "2", f.Get("b"))
assert.Equal(t, "7", f.Get("c"))
assert.Equal(t, "4", f.Get("d"))
assert.Equal(t, "5", f.Get("e"))
assert.Equal(t, "x", f.Get("x"))
}
func TestFirstLastNextPrev(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
testKeyValues := []KV{
{"kb", "1"},
{"kc", "2"},
{"kda", "3"},
{"ke", "4"},
{"w", "w"},
}
for _, kv := range testKeyValues {
f.Put(kv.key, kv.val)
}
db, err := newEtcdBackend(f.BackendConfig())
assert.NoError(t, err)
apply := func(stm STM) error {
// First/Last on valid multi item interval.
kv, err := stm.First("k")
assert.NoError(t, err)
assert.Equal(t, &KV{"kb", "1"}, kv)
kv, err = stm.Last("k")
assert.NoError(t, err)
assert.Equal(t, &KV{"ke", "4"}, kv)
// First/Last on single item interval.
kv, err = stm.First("w")
assert.NoError(t, err)
assert.Equal(t, &KV{"w", "w"}, kv)
kv, err = stm.Last("w")
assert.NoError(t, err)
assert.Equal(t, &KV{"w", "w"}, kv)
// Next/Prev on start/end.
kv, err = stm.Next("k", "ke")
assert.NoError(t, err)
assert.Nil(t, kv)
kv, err = stm.Prev("k", "kb")
assert.NoError(t, err)
assert.Nil(t, kv)
// Next/Prev in the middle.
kv, err = stm.Next("k", "kc")
assert.NoError(t, err)
assert.Equal(t, &KV{"kda", "3"}, kv)
kv, err = stm.Prev("k", "ke")
assert.NoError(t, err)
assert.Equal(t, &KV{"kda", "3"}, kv)
// Delete first item, then add an item before the
// deleted one. Check that First/Next will "jump"
// over the deleted item and return the new first.
stm.Del("kb")
stm.Put("ka", "0")
kv, err = stm.First("k")
assert.NoError(t, err)
assert.Equal(t, &KV{"ka", "0"}, kv)
kv, err = stm.Prev("k", "kc")
assert.NoError(t, err)
assert.Equal(t, &KV{"ka", "0"}, kv)
// Similarly test that a new end is returned if
// the old end is deleted first.
stm.Del("ke")
stm.Put("kf", "5")
kv, err = stm.Last("k")
assert.NoError(t, err)
assert.Equal(t, &KV{"kf", "5"}, kv)
kv, err = stm.Next("k", "kda")
assert.NoError(t, err)
assert.Equal(t, &KV{"kf", "5"}, kv)
// Overwrite one in the middle.
stm.Put("kda", "6")
kv, err = stm.Next("k", "kc")
assert.NoError(t, err)
assert.Equal(t, &KV{"kda", "6"}, kv)
// Add three in the middle, then delete one.
stm.Put("kdb", "7")
stm.Put("kdc", "8")
stm.Put("kdd", "9")
stm.Del("kdc")
// Check that stepping from first to last returns
// the expected sequence.
var kvs []KV
curr, err := stm.First("k")
assert.NoError(t, err)
for curr != nil {
kvs = append(kvs, *curr)
curr, err = stm.Next("k", curr.key)
assert.NoError(t, err)
}
expected := []KV{
{"ka", "0"},
{"kc", "2"},
{"kda", "6"},
{"kdb", "7"},
{"kdd", "9"},
{"kf", "5"},
}
assert.Equal(t, expected, kvs)
// Similarly check that stepping from last to first
// returns the expected sequence.
kvs = []KV{}
curr, err = stm.Last("k")
assert.NoError(t, err)
for curr != nil {
kvs = append(kvs, *curr)
curr, err = stm.Prev("k", curr.key)
assert.NoError(t, err)
}
expected = reverseKVs(expected)
assert.Equal(t, expected, kvs)
return nil
}
err = RunSTM(db.cli, apply)
assert.NoError(t, err)
assert.Equal(t, "0", f.Get("ka"))
assert.Equal(t, "2", f.Get("kc"))
assert.Equal(t, "6", f.Get("kda"))
assert.Equal(t, "7", f.Get("kdb"))
assert.Equal(t, "9", f.Get("kdd"))
assert.Equal(t, "5", f.Get("kf"))
assert.Equal(t, "w", f.Get("w"))
}
func TestCommitError(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(f.BackendConfig())
assert.NoError(t, err)
// Preset DB state.
f.Put("123", "xyz")
// Count the number of applies.
cnt := 0
apply := func(stm STM) error {
// STM must have the key/value.
val, err := stm.Get("123")
assert.NoError(t, err)
if cnt == 0 {
assert.Equal(t, []byte("xyz"), val)
// Put a conflicting key/value during the first apply.
f.Put("123", "def")
}
// We'd expect to
stm.Put("123", "abc")
cnt++
return nil
}
err = RunSTM(db.cli, apply)
assert.NoError(t, err)
assert.Equal(t, 2, cnt)
assert.Equal(t, "abc", f.Get("123"))
}
func TestManualTxError(t *testing.T) {
t.Parallel()
f := NewEtcdTestFixture(t)
defer f.Cleanup()
db, err := newEtcdBackend(f.BackendConfig())
assert.NoError(t, err)
// Preset DB state.
f.Put("123", "xyz")
stm := NewSTM(db.cli)
val, err := stm.Get("123")
assert.NoError(t, err)
assert.Equal(t, []byte("xyz"), val)
// Put a conflicting key/value.
f.Put("123", "def")
// Should still get the original version.
val, err = stm.Get("123")
assert.NoError(t, err)
assert.Equal(t, []byte("xyz"), val)
// Commit will fail with CommitError.
err = stm.Commit()
var e CommitError
assert.True(t, errors.As(err, &e))
// We expect that the transacton indeed did not commit.
assert.Equal(t, "def", f.Get("123"))
}

22
go.mod
View File

@ -14,10 +14,18 @@ require (
github.com/btcsuite/btcwallet/wallet/txrules v1.0.0
github.com/btcsuite/btcwallet/walletdb v1.3.1
github.com/btcsuite/btcwallet/wtxmgr v1.1.1-0.20200515224913-e0e62245ecbe
github.com/coreos/etcd v3.3.18+incompatible
github.com/coreos/go-semver v0.3.0 // indirect
github.com/coreos/go-systemd v0.0.0-00010101000000-000000000000 // indirect
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
github.com/davecgh/go-spew v1.1.1
github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
github.com/go-errors/errors v1.0.1
github.com/go-openapi/strfmt v0.19.5 // indirect
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
github.com/golang/protobuf v1.3.1
github.com/google/btree v1.0.0 // indirect
github.com/gorilla/websocket v1.4.1 // indirect
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
github.com/grpc-ecosystem/grpc-gateway v1.8.6
@ -25,7 +33,9 @@ require (
github.com/jackpal/go-nat-pmp v0.0.0-20170405195558-28a68d0c24ad
github.com/jedib0t/go-pretty v4.3.0+incompatible
github.com/jessevdk/go-flags v1.4.0
github.com/jonboulle/clockwork v0.1.0 // indirect
github.com/jrick/logrotate v1.0.0
github.com/json-iterator/go v1.1.9 // indirect
github.com/juju/clock v0.0.0-20190205081909-9c5c9712527c // indirect
github.com/juju/errors v0.0.0-20190806202954-0232dcc7464d // indirect
github.com/juju/loggo v0.0.0-20190526231331-6e530bcce5d8 // indirect
@ -43,12 +53,19 @@ require (
github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796
github.com/mattn/go-runewidth v0.0.9 // indirect
github.com/miekg/dns v0.0.0-20171125082028-79bfde677fa8
github.com/modern-go/reflect2 v1.0.1 // indirect
github.com/prometheus/client_golang v0.9.3
github.com/rogpeppe/fastuuid v1.2.0 // indirect
github.com/soheilhy/cmux v0.1.4 // indirect
github.com/stretchr/testify v1.4.0
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
github.com/tv42/zbase32 v0.0.0-20160707012821-501572607d02
github.com/urfave/cli v1.18.0
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
go.etcd.io/bbolt v1.3.3
go.uber.org/zap v1.14.1 // indirect
golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37
golang.org/x/net v0.0.0-20190206173232-65e2d4e15006
golang.org/x/net v0.0.0-20190620200207-3b0461eec859
golang.org/x/sys v0.0.0-20200116001909-b77594299b42 // indirect
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2
google.golang.org/genproto v0.0.0-20190201180003-4b09977fb922
@ -57,6 +74,7 @@ require (
gopkg.in/macaroon-bakery.v2 v2.0.1
gopkg.in/macaroon.v2 v2.0.0
gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 // indirect
sigs.k8s.io/yaml v1.1.0 // indirect
)
replace github.com/lightningnetwork/lnd/ticker => ./ticker
@ -71,4 +89,6 @@ replace git.schwanenlied.me/yawning/bsaes.git => github.com/Yawning/bsaes v0.0.0
// btcsuite/btcutil package requests a newer version.
replace golang.org/x/crypto => golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67
replace github.com/coreos/go-systemd => github.com/coreos/go-systemd/v22 v22.0.0
go 1.12

71
go.sum
View File

@ -70,10 +70,20 @@ github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghf
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/coreos/bbolt v1.3.3 h1:n6AiVyVRKQFNb6mJlwESEvvLoDyiTzXX7ORAUlkeBdY=
github.com/coreos/bbolt v1.3.3/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
github.com/coreos/etcd v3.3.18+incompatible h1:Zz1aXgDrFFi1nadh58tA9ktt06cmPTwNNP3dXwIq1lE=
github.com/coreos/etcd v3.3.18+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
github.com/coreos/go-systemd/v22 v22.0.0 h1:XJIw/+VlJ+87J+doOxznsAWIdmWuViOVhkQamW5YV28=
github.com/coreos/go-systemd/v22 v22.0.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg=
github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/frankban/quicktest v1.2.2 h1:xfmOhhoH5fGPgbEAlhLpJH9p0z/0Qizio9osmvn9IUY=
github.com/frankban/quicktest v1.2.2/go.mod h1:Qh/WofXFeiAFII1aEBu529AtJo6Zg2VHscnEsbBnJ20=
@ -91,20 +101,31 @@ github.com/go-openapi/strfmt v0.19.5 h1:0utjKrw+BAh8s57XE9Xz8DUBsVvPmRUB6styvl9w
github.com/go-openapi/strfmt v0.19.5/go.mod h1:eftuHTlB/dI8Uq8JJOyRlieZf+WkkxUuk0dgdHXr2Qk=
github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/godbus/dbus/v5 v5.0.3/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
github.com/gogo/protobuf v1.1.1 h1:72R+M5VuhED/KujmZVcIquuo8mBgX4oVda//DQb3PXo=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
github.com/google/go-cmp v0.2.1-0.20190312032427-6f77996f0c42 h1:q3pnF5JFBNRz8sRD+IRj7Y6DMyYGTNqnZ9axTbSfoNI=
github.com/google/go-cmp v0.2.1-0.20190312032427-6f77996f0c42/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM=
github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 h1:Iju5GlWwrvL6UBg4zJJt3btmonfrMlCDdsejg4CZE7c=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 h1:Ovs26xHkKqVztRpIrF/92BcuyuQ/YW4NSIpoGtfXNho=
@ -122,8 +143,12 @@ github.com/jedib0t/go-pretty v4.3.0+incompatible/go.mod h1:XemHduiw8R651AF9Pt4Fw
github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
github.com/jonboulle/clockwork v0.1.0 h1:VKV+ZcuP6l3yW9doeqz6ziZGgcynBVQO+obU0+0hcPo=
github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
github.com/jrick/logrotate v1.0.0 h1:lQ1bL/n9mBNeIXoTUoYRlK4dHuNJVofX9oWqBtPnSzI=
github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
github.com/json-iterator/go v1.1.9 h1:9yzud/Ht36ygwatGx56VwCZtlI/2AD15T1X2sjSuGns=
github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
github.com/juju/clock v0.0.0-20190205081909-9c5c9712527c h1:3UvYABOQRhJAApj9MdCN+Ydv841ETSoy6xLzdmmr/9A=
github.com/juju/clock v0.0.0-20190205081909-9c5c9712527c/go.mod h1:nD0vlnrUjcjJhqN5WuCWZyzfd5AHZAC9/ajvbSx69xA=
github.com/juju/errors v0.0.0-20190806202954-0232dcc7464d h1:hJXjZMxj0SWlMoQkzeZDLi2cmeiWKa7y1B8Rg+qaoEc=
@ -170,6 +195,11 @@ github.com/miekg/dns v0.0.0-20171125082028-79bfde677fa8 h1:PRMAcldsl4mXKJeRNB/KV
github.com/miekg/dns v0.0.0-20171125082028-79bfde677fa8/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@ -179,6 +209,7 @@ github.com/onsi/gomega v1.4.1/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5
github.com/onsi/gomega v1.4.3 h1:RE1xgDvH7imwFD45h+u2SgIfERHlS2yNG4DObb5BSKU=
github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
@ -197,30 +228,50 @@ github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40T
github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
github.com/rogpeppe/fastuuid v1.2.0 h1:Ppwyp6VYCF1nvBTXL3trRso7mXMlRrw9ooo375wvi2s=
github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
github.com/sirupsen/logrus v1.2.0 h1:juTguoYk5qI21pwyTXY3B3Y5cOTH3ZUyZCg1v/mihuo=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/soheilhy/cmux v0.1.4 h1:0HKaf1o97UwFjHH9o5XsHUOF+tqmdA7KEzXLpiyaw0E=
github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 h1:LnC5Kc/wtumK+WB441p7ynQJzVuNRJiqddSIE3IlSEQ=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
github.com/tv42/zbase32 v0.0.0-20160707012821-501572607d02 h1:tcJ6OjwOMvExLlzrAVZute09ocAGa7KqOON60++Gz4E=
github.com/tv42/zbase32 v0.0.0-20160707012821-501572607d02/go.mod h1:tHlrkM198S068ZqfrO6S8HsoJq2bF3ETfTL+kt4tInY=
github.com/urfave/cli v1.18.0 h1:m9MfmZWX7bwr9kUcs/Asr95j0IVXzGNNc+/5ku2m26Q=
github.com/urfave/cli v1.18.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 h1:eY9dn8+vbi4tKz5Qo6v2eYzo7kUS51QINcR5jNpbZS8=
github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
go.etcd.io/bbolt v1.3.3 h1:MUGmc65QhB3pIlaQ5bB4LwqSj6GIonVJXpZiaKNyaKk=
go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
go.mongodb.org/mongo-driver v1.0.3 h1:GKoji1ld3tw2aC+GX1wbr/J2fX13yNacEYoJ8Nhr0yU=
go.mongodb.org/mongo-driver v1.0.3/go.mod h1:u7ryQJ+DOzQmeO7zB6MHyr8jkEQvC8vH7qLUO4lqsUM=
go.uber.org/atomic v1.6.0 h1:Ezj3JGmsOnG1MoRWQkPBsKLe9DwWD9QeXzTRzzldNVk=
go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
go.uber.org/multierr v1.5.0 h1:KCa4XfM8CWFCpxXRGok+Q0SS/0XBhMDbHHGABQLvD2A=
go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
go.uber.org/zap v1.14.1 h1:nYDKopTbvAPq/NrUVZwT15y2lpROBiLLyoRTbXOYWOo=
go.uber.org/zap v1.14.1/go.mod h1:Mb2vm2krFEG5DV0W9qcHBYFtp/Wku1cvYaqPsS/WYfc=
golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67 h1:ng3VDlRp5/DHpSWl02R4rM9I+8M2rhmsuLwAMmkLQWE=
golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529 h1:iMGN4xG0cnqj3t+zOM8wUB0BiPKHEwSxEZCvzcbZuvk=
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
golang.org/x/net v0.0.0-20180719180050-a680a1efc54d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -229,10 +280,15 @@ golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73r
golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190206173232-65e2d4e15006 h1:bfLnR+k0tq5Lqt6dflRLcZiz6UaXCMt3vhYJ1l4FQ80=
golang.org/x/net v0.0.0-20190206173232-65e2d4e15006/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -241,6 +297,8 @@ golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5h
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190209173611-3b5209105503 h1:5SvYFrOM3W8Mexn9/oA44Ji7vhXAZQ9hiP+1Q/DMrWg=
golang.org/x/sys v0.0.0-20190209173611-3b5209105503/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd h1:DBH9mDw0zluJT/R+nGuV3jWFWLFaHyYZWD4tOT+cjn0=
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20200116001909-b77594299b42 h1:vEOn+mP2zCOVzKckCZy6YsCtDblrpj/w7B9nxGNELpg=
@ -252,6 +310,11 @@ golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 h1:+DCIGbF/swA92ohVg0//6X2I
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190201180003-4b09977fb922 h1:mBVYJnbrXLA/ZCBTCe7PtEgAUP+1bg92qTaFoPHdz+8=
@ -267,6 +330,7 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/errgo.v1 v1.0.1 h1:oQFRXzZ7CkBGdm1XZm/EbQYaYNNEElNBOd09M6cqNso=
gopkg.in/errgo.v1 v1.0.1/go.mod h1:3NjfXwocQRYAPTq4/fzX+CwUhPRcR/azYRhj8G+LqMo=
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/macaroon-bakery.v2 v2.0.1 h1:0N1TlEdfLP4HXNCg7MQUMp5XwvOoxk+oe9Owr2cpvsc=
@ -284,3 +348,6 @@ gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
sigs.k8s.io/yaml v1.1.0 h1:4A07+ZFc2wgJwo8YNlQpr1rVlgUDlxXHhPJciaPY5gs=
sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=