prometheus/cadvisor
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Merge pull request #1294 from timstclair/partial-failure

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Fix nil-interface partialFailure bug
This commit is contained in:
Vish Kannan 2016-05-19 16:30:05 -07:00
commit 7ddf6eb5d1
2 changed files with 21 additions and 8 deletions
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15
manager/manager.go
View File

@ -382,7 +382,7 @@ func (self *manager) GetDerivedStats(containerName string, options v2.RequestOpt
}
stats[name] = d
}
return stats, errs
return stats, errs.OrNil()
}
func (self *manager) GetContainerSpec(containerName string, options v2.RequestOptions) (map[string]v2.ContainerSpec, error) {
@ -400,7 +400,7 @@ func (self *manager) GetContainerSpec(containerName string, options v2.RequestOp
spec := self.getV2Spec(cinfo)
specs[name] = spec
}
return specs, errs
return specs, errs.OrNil()
}
// Get V2 container spec from v1 container info.
@ -461,7 +461,7 @@ func (self *manager) GetContainerInfoV2(containerName string, options v2.Request
infos[name] = result
}
return infos, errs
return infos, errs.OrNil()
}
func (self *manager) containerDataToContainerInfo(cont *containerData, query *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
@ -614,7 +614,7 @@ func (self *manager) GetRequestedContainersInfo(containerName string, options v2
}
containersMap[name] = info
}
return containersMap, errs
return containersMap, errs.OrNil()
}
func (self *manager) getRequestedContainers(containerName string, options v2.RequestOptions) (map[string]*containerData, error) {
@ -1241,3 +1241,10 @@ func (f *partialFailure) append(id, operation string, err error) {
func (f partialFailure) Error() string {
return fmt.Sprintf("partial failures: %s", strings.Join(f, ", "))
}
func (f partialFailure) OrNil() error {
if len(f) == 0 {
return nil
}
return f
}

14
manager/manager_test.go
View File

@ -32,7 +32,6 @@ import (
"github.com/google/cadvisor/info/v2"
"github.com/google/cadvisor/utils/sysfs/fakesysfs"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TODO(vmarmol): Refactor these tests.
@ -174,7 +173,9 @@ func TestGetContainerInfoV2(t *testing.T) {
m, _, handlerMap := expectManagerWithContainers(containers, query, t)
infos, err := m.GetContainerInfoV2("/", options)
require.NoError(t, err, "Error calling GetContainerInfoV2")
if err != nil {
t.Fatalf("GetContainerInfoV2 failed: %v", err)
}
for container, handler := range handlerMap {
handler.AssertExpectations(t)
@ -205,7 +206,10 @@ func TestGetContainerInfoV2Failure(t *testing.T) {
m, _, handlerMap := expectManagerWithContainers(containers, query, t)
// Remove /c1 stats
require.NoError(t, m.memoryCache.RemoveContainer(statless))
err := m.memoryCache.RemoveContainer(statless)
if err != nil {
t.Fatalf("RemoveContainer failed: %v", err)
}
// Make GetSpec fail on /c2
mockErr := fmt.Errorf("intentional GetSpec failure")
@ -216,7 +220,9 @@ func TestGetContainerInfoV2Failure(t *testing.T) {
m.containers[namespacedContainerName{Name: failing}].lastUpdatedTime = time.Time{} // Force GetSpec.
infos, err := m.GetContainerInfoV2("/", options)
assert.Error(t, err, "Expected error calling GetContainerInfoV2")
if err == nil {
t.Error("Expected error calling GetContainerInfoV2")
}
// Successful containers still successful.
info, ok := infos[successful]