forked from blox/blox
/
list_instances.go
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/
list_instances.go
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// Copyright 2016-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file 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 tests
import (
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/blox/blox/cluster-state-service/canary/pkg/tests/util"
"github.com/blox/blox/cluster-state-service/canary/pkg/wrappers"
log "github.com/cihub/seelog"
"github.com/pkg/errors"
)
const (
listInstancesMetric = "listInstances"
listInstancesClusterNamePrefix = canaryClusterNamePrefix + "ListInstances_"
)
// ListInstances defines the test for CSS ListInstances API
func (c canary) ListInstances() error {
clusterName := listInstancesClusterNamePrefix + util.TimeString()
err := c.ecsWrapper.CreateCluster(&clusterName)
if err != nil {
return err
}
log.Infof("List instances - created cluster")
// TODO: Launch more than 1 instance for this test
numInstances := int64(1)
ec2InstanceIDs, err := c.ec2Wrapper.LaunchInstances(&numInstances, &clusterName)
if err != nil {
return err
}
log.Infof("List instances - launched EC2 instance")
instanceARN, err := util.ValidateECSContainerInstanceAndGetInstanceARN(c.ecsWrapper, clusterName)
if err != nil {
return err
}
log.Infof("List instances - instance registered with ECS")
err = validateListInstancesCall(c.cssWrapper, clusterName, instanceARN)
if err != nil {
return err
}
log.Infof("List instances - instance in CSS ListInstances response")
err = util.DeleteCluster(c.ecsWrapper, clusterName)
if err != nil {
return err
}
err = util.TerminateInstances(c.ec2Wrapper, ec2InstanceIDs)
if err != nil {
return err
}
log.Infof("List instances - ListInstances test resources cleaned up")
return nil
}
// ListInstancesMetric returns the metric name to which the ListInstances test metric should be emitted into
func (c canary) ListInstancesMetric() string {
return listInstancesMetric
}
func validateListInstancesCall(cssWrapper wrappers.CSSWrapper, clusterName string, instanceARN string) error {
// Takes some time for CSS to get the instance.
// Retry list call once every 10 seconds for 2 minutes.
// TODO: Change sleep and retry related numbers to constants
found := false
for i := 0; i < 12; i++ {
instances, err := cssWrapper.ListInstances(&clusterName)
if err != nil {
return err
}
for _, ins := range instances {
if ins.Entity != nil && aws.StringValue(ins.Entity.ContainerInstanceARN) == instanceARN {
found = true
break
}
}
if found {
break
}
time.Sleep(10 * time.Second)
}
if !found {
return errors.Errorf("Instance with ARN '%s' belonging to cluster with name"+
" '%s' not found in CSS. ", instanceARN, clusterName)
}
return nil
}