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using regexp match achieve find efficiently

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This commit is contained in:
stewart-yu 2017-11-13 22:31:33 +08:00
parent fd3de96be6
commit 1a11a1886f
2 changed files with 10 additions and 4 deletions
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7
pkg/cloudprovider/providers/aws/instances.go
View File

@ -25,10 +25,14 @@ import (
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/golang/glog"
"k8s.io/api/core/v1"
"regexp"
"sync"
"time"
)
// awsInstanceRegMatch represents Regex Match for AWS instance.
var awsInstanceRegMatch = regexp.MustCompile("^i-[^/]*$")
// awsInstanceID represents the ID of the instance in the AWS API, e.g. i-12345678
// The "traditional" format is "i-12345678"
// A new longer format is also being introduced: "i-12345678abcdef01"
@ -76,8 +80,7 @@ func (name kubernetesInstanceID) mapToAWSInstanceID() (awsInstanceID, error) {
// We sanity check the resulting volume; the two known formats are
// i-12345678 and i-12345678abcdef01
// TODO: Regex match?
if awsID == "" || strings.Contains(awsID, "/") || !strings.HasPrefix(awsID, "i-") {
if awsID == "" || !awsInstanceRegMatch.MatchString(awsID) {
return "", fmt.Errorf("Invalid format for AWS instance (%s)", name)
}

7
pkg/cloudprovider/providers/aws/volumes.go
View File

@ -19,11 +19,15 @@ package aws
import (
"fmt"
"net/url"
"regexp"
"strings"
"github.com/aws/aws-sdk-go/aws"
)
// awsVolumeRegMatch represents Regex Match for AWS volume.
var awsVolumeRegMatch = regexp.MustCompile("^vol-[^/]*$")
// awsVolumeID represents the ID of the volume in the AWS API, e.g. vol-12345678
// The "traditional" format is "vol-12345678"
// A new longer format is also being introduced: "vol-12345678abcdef01"
@ -75,8 +79,7 @@ func (name KubernetesVolumeID) mapToAWSVolumeID() (awsVolumeID, error) {
// We sanity check the resulting volume; the two known formats are
// vol-12345678 and vol-12345678abcdef01
// TODO: Regex match?
if strings.Contains(awsID, "/") || !strings.HasPrefix(awsID, "vol-") {
if !awsVolumeRegMatch.MatchString(awsID) {
return "", fmt.Errorf("Invalid format for AWS volume (%s)", name)
}