forked from blox/blox
/
ecs.go
66 lines (58 loc) · 1.75 KB
/
ecs.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 clients
import (
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ecs"
"github.com/blox/blox/daemon-scheduler/pkg/httpclient"
"github.com/pkg/errors"
)
const (
ecsEndpointEnvVarName = "ECS_ENDPOINT"
)
func getECSEndpoint() (string, error) {
endpoint := os.Getenv(ecsEndpointEnvVarName)
if endpoint == "" {
return "", errors.Errorf("Empty endpoint. Please specify the ECS endpoint name using the '%s' environment variable", ecsEndpointEnvVarName)
}
return endpoint, nil
}
func newAWSSession() (*session.Session, error) {
var sess *session.Session
var err error
if endpoint, err := getECSEndpoint(); err != nil {
sess, err = session.NewSessionWithOptions(session.Options{
Config: aws.Config{
HTTPClient: httpclient.New(),
},
})
} else {
sess, err = session.NewSessionWithOptions(session.Options{
Config: aws.Config{
Endpoint: aws.String(endpoint),
HTTPClient: httpclient.New(),
},
})
}
return sess, err
}
// NewECSClient returns an ECS client.
func NewECSClient() (*ecs.ECS, error) {
sess, err := newAWSSession()
if err != nil {
return nil, err
}
return ecs.New(sess), nil
}