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Wait until resource is deleted before creating

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This commit is contained in:
Michael Fraenkel
2016-08-31 20:12:19 -04:00
parent 88e17d7478
commit c036d28689
2 changed files with 66 additions and 6 deletions
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21
pkg/kubectl/cmd/replace.go
View File

@@ -27,10 +27,12 @@ import (
"github.com/spf13/cobra"
"github.com/golang/glog"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/kubectl"
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/pkg/kubectl/resource"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/wait"
)
// ReplaceOptions is the start of the data required to perform the operation. As new fields are added, add them here instead of
@@ -213,10 +215,11 @@ func forceReplace(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []
}
//Replace will create a resource if it doesn't exist already, so ignore not found error
ignoreNotFound := true
timeout := cmdutil.GetFlagDuration(cmd, "timeout")
// By default use a reaper to delete all related resources.
if cmdutil.GetFlagBool(cmd, "cascade") {
glog.Warningf("\"cascade\" is set, kubectl will delete and re-create all resources managed by this resource (e.g. Pods created by a ReplicationController). Consider using \"kubectl rolling-update\" if you want to update a ReplicationController together with its Pods.")
err = ReapResult(r, f, out, cmdutil.GetFlagBool(cmd, "cascade"), ignoreNotFound, cmdutil.GetFlagDuration(cmd, "timeout"), cmdutil.GetFlagInt(cmd, "grace-period"), shortOutput, mapper, false)
err = ReapResult(r, f, out, cmdutil.GetFlagBool(cmd, "cascade"), ignoreNotFound, timeout, cmdutil.GetFlagInt(cmd, "grace-period"), shortOutput, mapper, false)
} else {
err = DeleteResult(r, out, ignoreNotFound, shortOutput, mapper)
}
@@ -224,6 +227,22 @@ func forceReplace(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []
return err
}
if timeout == 0 {
timeout = kubectl.Timeout
}
r.Visit(func(info *resource.Info, err error) error {
if err != nil {
return err
}
return wait.PollImmediate(kubectl.Interval, timeout, func() (bool, error) {
if err := info.Get(); !errors.IsNotFound(err) {
return false, err
}
return true, nil
})
})
r = resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), runtime.UnstructuredJSONScheme).
Schema(schema).
ContinueOnError().

51
pkg/kubectl/cmd/replace_test.go
View File

@@ -32,12 +32,22 @@ func TestReplaceObject(t *testing.T) {
f, tf, codec, _ := NewAPIFactory()
ns := dynamic.ContentConfig().NegotiatedSerializer
tf.Printer = &testPrinter{}
deleted := false
tf.Client = &fake.RESTClient{
NegotiatedSerializer: ns,
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
switch p, m := req.URL.Path, req.Method; {
case p == "/namespaces/test/replicationcontrollers/redis-master" && (m == http.MethodGet || m == http.MethodPut || m == http.MethodDelete):
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodDelete:
deleted = true
fallthrough
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodPut:
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodGet:
statusCode := http.StatusOK
if deleted {
statusCode = http.StatusNotFound
}
return &http.Response{StatusCode: statusCode, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case p == "/namespaces/test/replicationcontrollers" && m == http.MethodPost:
return &http.Response{StatusCode: http.StatusCreated, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
default:
@@ -76,16 +86,36 @@ func TestReplaceMultipleObject(t *testing.T) {
f, tf, codec, _ := NewAPIFactory()
ns := dynamic.ContentConfig().NegotiatedSerializer
tf.Printer = &testPrinter{}
redisMasterDeleted := false
frontendDeleted := false
tf.Client = &fake.RESTClient{
NegotiatedSerializer: ns,
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
switch p, m := req.URL.Path, req.Method; {
case p == "/namespaces/test/replicationcontrollers/redis-master" && (m == http.MethodGet || m == http.MethodPut || m == http.MethodDelete):
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodDelete:
redisMasterDeleted = true
fallthrough
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodPut:
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodGet:
statusCode := http.StatusOK
if redisMasterDeleted {
statusCode = http.StatusNotFound
}
return &http.Response{StatusCode: statusCode, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case p == "/namespaces/test/replicationcontrollers" && m == http.MethodPost:
return &http.Response{StatusCode: http.StatusCreated, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case p == "/namespaces/test/services/frontend" && (m == http.MethodGet || m == http.MethodPut || m == http.MethodDelete):
case p == "/namespaces/test/services/frontend" && m == http.MethodDelete:
frontendDeleted = true
fallthrough
case p == "/namespaces/test/services/frontend" && m == http.MethodPut:
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
case p == "/namespaces/test/services/frontend" && m == http.MethodGet:
statusCode := http.StatusOK
if frontendDeleted {
statusCode = http.StatusNotFound
}
return &http.Response{StatusCode: statusCode, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
case p == "/namespaces/test/services" && m == http.MethodPost:
return &http.Response{StatusCode: http.StatusCreated, Header: defaultHeader(), Body: objBody(codec, &svc.Items[0])}, nil
default:
@@ -124,11 +154,22 @@ func TestReplaceDirectory(t *testing.T) {
f, tf, codec, _ := NewAPIFactory()
ns := dynamic.ContentConfig().NegotiatedSerializer
tf.Printer = &testPrinter{}
created := map[string]bool{}
tf.Client = &fake.RESTClient{
NegotiatedSerializer: ns,
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
switch p, m := req.URL.Path, req.Method; {
case strings.HasPrefix(p, "/namespaces/test/replicationcontrollers/") && (m == http.MethodGet || m == http.MethodPut || m == http.MethodDelete):
case strings.HasPrefix(p, "/namespaces/test/replicationcontrollers/") && m == http.MethodPut:
created[p] = true
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case strings.HasPrefix(p, "/namespaces/test/replicationcontrollers/") && m == http.MethodGet:
statusCode := http.StatusNotFound
if created[p] {
statusCode = http.StatusOK
}
return &http.Response{StatusCode: statusCode, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case strings.HasPrefix(p, "/namespaces/test/replicationcontrollers/") && m == http.MethodDelete:
delete(created, p)
return &http.Response{StatusCode: http.StatusOK, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
case strings.HasPrefix(p, "/namespaces/test/replicationcontrollers") && m == http.MethodPost:
return &http.Response{StatusCode: http.StatusCreated, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil
@@ -172,7 +213,7 @@ func TestForceReplaceObjectNotFound(t *testing.T) {
NegotiatedSerializer: ns,
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
switch p, m := req.URL.Path, req.Method; {
case p == "/namespaces/test/replicationcontrollers/redis-master" && m == http.MethodDelete:
case p == "/namespaces/test/replicationcontrollers/redis-master" && (m == http.MethodGet || m == http.MethodDelete):
return &http.Response{StatusCode: http.StatusNotFound, Header: defaultHeader(), Body: stringBody("")}, nil
case p == "/namespaces/test/replicationcontrollers" && m == http.MethodPost:
return &http.Response{StatusCode: http.StatusCreated, Header: defaultHeader(), Body: objBody(codec, &rc.Items[0])}, nil