136 lines
2.8 KiB
Go
136 lines
2.8 KiB
Go
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/*
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Copyright 2014 Rohith All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package marathon
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import (
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"errors"
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"fmt"
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"net"
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"net/url"
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"reflect"
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"strings"
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"sync/atomic"
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"time"
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"github.com/google/go-querystring/query"
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)
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type atomicSwitch int64
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func (r *atomicSwitch) IsSwitched() bool {
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return atomic.LoadInt64((*int64)(r)) != 0
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}
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func (r *atomicSwitch) SwitchOn() {
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atomic.StoreInt64((*int64)(r), 1)
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}
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func (r *atomicSwitch) SwitchedOff() {
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atomic.StoreInt64((*int64)(r), 0)
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}
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func validateID(id string) string {
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if !strings.HasPrefix(id, "/") {
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return fmt.Sprintf("/%s", id)
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}
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return id
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}
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func trimRootPath(id string) string {
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if strings.HasPrefix(id, "/") {
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return strings.TrimPrefix(id, "/")
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}
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return id
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}
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func deadline(timeout time.Duration, work func(chan bool) error) error {
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result := make(chan error)
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timer := time.After(timeout)
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stopChannel := make(chan bool, 1)
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// allow the method to attempt
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go func() {
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result <- work(stopChannel)
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}()
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for {
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select {
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case err := <-result:
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return err
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case <-timer:
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stopChannel <- true
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return ErrTimeoutError
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}
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}
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}
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func getInterfaceAddress(name string) (string, error) {
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interfaces, err := net.Interfaces()
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if err != nil {
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return "", err
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}
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for _, iface := range interfaces {
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// step: get only the interface we're interested in
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if iface.Name == name {
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addrs, err := iface.Addrs()
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if err != nil {
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return "", err
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}
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// step: return the first address
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if len(addrs) > 0 {
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return parseIPAddr(addrs[0]), nil
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}
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}
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}
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return "", errors.New("Unable to determine or find the interface")
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}
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func contains(elements []string, value string) bool {
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for _, element := range elements {
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if element == value {
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return true
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}
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}
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return false
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}
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func parseIPAddr(addr net.Addr) string {
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return strings.SplitN(addr.String(), "/", 2)[0]
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}
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// addOptions adds the parameters in opt as URL query parameters to s.
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// opt must be a struct whose fields may contain "url" tags.
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func addOptions(s string, opt interface{}) (string, error) {
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v := reflect.ValueOf(opt)
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if v.Kind() == reflect.Ptr && v.IsNil() {
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return s, nil
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}
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u, err := url.Parse(s)
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if err != nil {
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return s, err
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}
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qs, err := query.Values(opt)
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if err != nil {
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return s, err
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}
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u.RawQuery = qs.Encode()
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return u.String(), nil
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}
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