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zookeeper: fix panic

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Signed-off-by: Simon Pasquier <spasquie@redhat.com>
This commit is contained in:
Simon Pasquier 2018-09-28 11:36:43 +02:00
parent c305ffaa09
commit 5df757fdd4
3 changed files with 39 additions and 7 deletions
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4
discovery/manager.go
View file

@ -304,12 +304,12 @@ func (m *Manager) registerProviders(cfg sd_config.ServiceDiscoveryConfig, setNam
}
for _, c := range cfg.ServersetSDConfigs {
add(c, func() (Discoverer, error) {
return zookeeper.NewServersetDiscovery(c, log.With(m.logger, "discovery", "zookeeper")), nil
return zookeeper.NewServersetDiscovery(c, log.With(m.logger, "discovery", "zookeeper"))
})
}
for _, c := range cfg.NerveSDConfigs {
add(c, func() (Discoverer, error) {
return zookeeper.NewNerveDiscovery(c, log.With(m.logger, "discovery", "nerve")), nil
return zookeeper.NewNerveDiscovery(c, log.With(m.logger, "discovery", "nerve"))
})
}
for _, c := range cfg.EC2SDConfigs {

10
discovery/zookeeper/zookeeper.go
View file

@ -115,12 +115,12 @@ type Discovery struct {
}
// NewNerveDiscovery returns a new Discovery for the given Nerve config.
func NewNerveDiscovery(conf *NerveSDConfig, logger log.Logger) *Discovery {
func NewNerveDiscovery(conf *NerveSDConfig, logger log.Logger) (*Discovery, error) {
return NewDiscovery(conf.Servers, time.Duration(conf.Timeout), conf.Paths, logger, parseNerveMember)
}
// NewServersetDiscovery returns a new Discovery for the given serverset config.
func NewServersetDiscovery(conf *ServersetSDConfig, logger log.Logger) *Discovery {
func NewServersetDiscovery(conf *ServersetSDConfig, logger log.Logger) (*Discovery, error) {
return NewDiscovery(conf.Servers, time.Duration(conf.Timeout), conf.Paths, logger, parseServersetMember)
}
@ -132,7 +132,7 @@ func NewDiscovery(
paths []string,
logger log.Logger,
pf func(data []byte, path string) (model.LabelSet, error),
) *Discovery {
) (*Discovery, error) {
if logger == nil {
logger = log.NewNopLogger()
}
@ -143,7 +143,7 @@ func NewDiscovery(
c.SetLogger(treecache.NewZookeeperLogger(logger))
})
if err != nil {
return nil
return nil, err
}
updates := make(chan treecache.ZookeeperTreeCacheEvent)
sd := &Discovery{
@ -156,7 +156,7 @@ func NewDiscovery(
for _, path := range paths {
sd.treeCaches = append(sd.treeCaches, treecache.NewZookeeperTreeCache(conn, path, updates, logger))
}
return sd
return sd, nil
}
// Run implements the Discoverer interface.

32
discovery/zookeeper/zookeeper_test.go Normal file
View file

@ -0,0 +1,32 @@
// Copyright 2018 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package zookeeper
import (
"testing"
"time"
"github.com/prometheus/common/model"
)
func TestNewDiscoveryError(t *testing.T) {
_, err := NewDiscovery(
[]string{"unreachable.test"},
time.Second, []string{"/"},
nil,
func(data []byte, path string) (model.LabelSet, error) { return nil, nil })
if err == nil {
t.Fatalf("expected error, got nil")
}
}