This update provides:
1) workaround around the build failures. In
summary, it forces the download of some packages during the build
process.
2) update the set of packages that should go inside the vendor
directory
3) Update the dockerfile to use go 1.10
Change-Id: I2bfd090ce0f25b0c10aa214755ae2da7e5384d60
diff --git a/vendor/github.com/xiang90/probing/prober.go b/vendor/github.com/xiang90/probing/prober.go
new file mode 100644
index 0000000..c917cfd
--- /dev/null
+++ b/vendor/github.com/xiang90/probing/prober.go
@@ -0,0 +1,134 @@
+package probing
+
+import (
+ "encoding/json"
+ "errors"
+ "net/http"
+ "sync"
+ "time"
+)
+
+var (
+ ErrNotFound = errors.New("probing: id not found")
+ ErrExist = errors.New("probing: id exists")
+)
+
+type Prober interface {
+ AddHTTP(id string, probingInterval time.Duration, endpoints []string) error
+ Remove(id string) error
+ RemoveAll()
+ Reset(id string) error
+ Status(id string) (Status, error)
+}
+
+type prober struct {
+ mu sync.Mutex
+ targets map[string]*status
+ tr http.RoundTripper
+}
+
+func NewProber(tr http.RoundTripper) Prober {
+ p := &prober{targets: make(map[string]*status)}
+ if tr == nil {
+ p.tr = http.DefaultTransport
+ } else {
+ p.tr = tr
+ }
+ return p
+}
+
+func (p *prober) AddHTTP(id string, probingInterval time.Duration, endpoints []string) error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+ if _, ok := p.targets[id]; ok {
+ return ErrExist
+ }
+
+ s := &status{stopC: make(chan struct{})}
+ p.targets[id] = s
+
+ ticker := time.NewTicker(probingInterval)
+
+ go func() {
+ pinned := 0
+ for {
+ select {
+ case <-ticker.C:
+ start := time.Now()
+ req, err := http.NewRequest("GET", endpoints[pinned], nil)
+ if err != nil {
+ panic(err)
+ }
+ resp, err := p.tr.RoundTrip(req)
+ if err != nil {
+ s.recordFailure(err)
+ pinned = (pinned + 1) % len(endpoints)
+ continue
+ }
+
+ var hh Health
+ d := json.NewDecoder(resp.Body)
+ err = d.Decode(&hh)
+ resp.Body.Close()
+ if err != nil || !hh.OK {
+ s.recordFailure(err)
+ pinned = (pinned + 1) % len(endpoints)
+ continue
+ }
+
+ s.record(time.Since(start), hh.Now)
+ case <-s.stopC:
+ ticker.Stop()
+ return
+ }
+ }
+ }()
+
+ return nil
+}
+
+func (p *prober) Remove(id string) error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ s, ok := p.targets[id]
+ if !ok {
+ return ErrNotFound
+ }
+ close(s.stopC)
+ delete(p.targets, id)
+ return nil
+}
+
+func (p *prober) RemoveAll() {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ for _, s := range p.targets {
+ close(s.stopC)
+ }
+ p.targets = make(map[string]*status)
+}
+
+func (p *prober) Reset(id string) error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ s, ok := p.targets[id]
+ if !ok {
+ return ErrNotFound
+ }
+ s.reset()
+ return nil
+}
+
+func (p *prober) Status(id string) (Status, error) {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ s, ok := p.targets[id]
+ if !ok {
+ return nil, ErrNotFound
+ }
+ return s, nil
+}