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Merge pull request #15921 from brendandburns/fix2
Add a --expose flag to kubectl run
This commit is contained in:
Jeff Lowdermilk
commit
d4de35e177
@ -747,6 +747,7 @@ _kubectl_run()
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flags+=("--command")
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flags+=("--dry-run")
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flags+=("--env=")
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flags+=("--expose")
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flags+=("--generator=")
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flags+=("--hostport=")
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flags+=("--image=")
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@ -764,6 +765,8 @@ _kubectl_run()
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two_word_flags+=("-r")
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flags+=("--requests=")
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flags+=("--restart=")
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flags+=("--service-generator=")
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flags+=("--service-overrides=")
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flags+=("--show-all")
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flags+=("-a")
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flags+=("--sort-by=")
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@ -34,6 +34,10 @@ Creates a replication controller to manage the created container(s).
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\fB\-\-env\fP=[]
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Environment variables to set in the container
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.PP
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\fB\-\-expose\fP=false
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If true, a public, external service is created for the container(s) which are run
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.PP
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\fB\-\-generator\fP=""
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The name of the API generator to use. Default is 'run/v1' if \-\-restart=Always, otherwise the default is 'run\-pod/v1'.
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@ -78,7 +82,7 @@ Creates a replication controller to manage the created container(s).
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.PP
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\fB\-\-port\fP=\-1
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The port that this container exposes.
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The port that this container exposes. If \-\-expose is true, this is also the port used by the service that is created.
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.PP
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\fB\-r\fP, \fB\-\-replicas\fP=1
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@ -92,6 +96,14 @@ Creates a replication controller to manage the created container(s).
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\fB\-\-restart\fP="Always"
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The restart policy for this Pod. Legal values [Always, OnFailure, Never]. If set to 'Always' a replication controller is created for this pod, if set to OnFailure or Never, only the Pod is created and \-\-replicas must be 1. Default 'Always'
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.PP
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\fB\-\-service\-generator\fP="service/v2"
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The name of the generator to use for creating a service. Only used if \-\-expose is true
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.PP
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\fB\-\-service\-overrides\fP=""
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An inline JSON override for the generated service object. If this is non\-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field. Only used if \-\-expose is true.
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.PP
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\fB\-a\fP, \fB\-\-show\-all\fP=false
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When printing, show all resources (default hide terminated pods.)
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@ -83,6 +83,7 @@ $ kubectl run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>
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--command[=false]: If true and extra arguments are present, use them as the 'command' field in the container, rather than the 'args' field which is the default.
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--dry-run[=false]: If true, only print the object that would be sent, without sending it.
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--env=[]: Environment variables to set in the container
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--expose[=false]: If true, a public, external service is created for the container(s) which are run
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--generator="": The name of the API generator to use. Default is 'run/v1' if --restart=Always, otherwise the default is 'run-pod/v1'.
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--hostport=-1: The host port mapping for the container port. To demonstrate a single-machine container.
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--image="": The image for the container to run.
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@ -93,10 +94,12 @@ $ kubectl run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>
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-o, --output="": Output format. One of: json|yaml|wide|name|go-template=...|go-template-file=...|jsonpath=...|jsonpath-file=... See golang template [http://golang.org/pkg/text/template/#pkg-overview] and jsonpath template [http://releases.k8s.io/HEAD/docs/user-guide/jsonpath.md].
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--output-version="": Output the formatted object with the given version (default api-version).
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--overrides="": An inline JSON override for the generated object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field.
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--port=-1: The port that this container exposes.
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--port=-1: The port that this container exposes. If --expose is true, this is also the port used by the service that is created.
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-r, --replicas=1: Number of replicas to create for this container. Default is 1.
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--requests="": The resource requirement requests for this container. For example, 'cpu=100m,memory=256Mi'
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--restart="Always": The restart policy for this Pod. Legal values [Always, OnFailure, Never]. If set to 'Always' a replication controller is created for this pod, if set to OnFailure or Never, only the Pod is created and --replicas must be 1. Default 'Always'
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--service-generator="service/v2": The name of the generator to use for creating a service. Only used if --expose is true
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--service-overrides="": An inline JSON override for the generated service object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field. Only used if --expose is true.
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-a, --show-all[=false]: When printing, show all resources (default hide terminated pods.)
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--sort-by="": If non-empty, sort list types using this field specification. The field specification is expressed as a JSONPath expression (e.g. 'ObjectMeta.Name'). The field in the API resource specified by this JSONPath expression must be an integer or a string.
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-i, --stdin[=false]: Keep stdin open on the container(s) in the pod, even if nothing is attached.
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@ -136,7 +139,7 @@ $ kubectl run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>
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* [kubectl](kubectl.md) - kubectl controls the Kubernetes cluster manager
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###### Auto generated by spf13/cobra on 9-Oct-2015
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###### Auto generated by spf13/cobra on 20-Oct-2015
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<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
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[]()
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@ -262,8 +262,10 @@ service-account-lookup
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service-account-private-key-file
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service-address
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service-cluster-ip-range
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service-generator
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service-node-port-range
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service-node-ports
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service-overrides
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service-sync-period
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session-affinity
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since-seconds
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@ -24,12 +24,14 @@ import (
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"github.com/spf13/cobra"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/meta"
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client "k8s.io/kubernetes/pkg/client/unversioned"
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"k8s.io/kubernetes/pkg/fields"
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"k8s.io/kubernetes/pkg/kubectl"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/runtime"
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)
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const (
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@ -77,6 +79,11 @@ func NewCmdRun(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *c
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},
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}
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cmdutil.AddPrinterFlags(cmd)
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addRunFlags(cmd)
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return cmd
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}
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func addRunFlags(cmd *cobra.Command) {
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cmd.Flags().String("generator", "", "The name of the API generator to use. Default is 'run/v1' if --restart=Always, otherwise the default is 'run-pod/v1'.")
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cmd.Flags().String("image", "", "The image for the container to run.")
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cmd.MarkFlagRequired("image")
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@ -84,7 +91,7 @@ func NewCmdRun(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *c
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cmd.Flags().Bool("dry-run", false, "If true, only print the object that would be sent, without sending it.")
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cmd.Flags().String("overrides", "", "An inline JSON override for the generated object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field.")
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cmd.Flags().StringSlice("env", []string{}, "Environment variables to set in the container")
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cmd.Flags().Int("port", -1, "The port that this container exposes.")
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cmd.Flags().Int("port", -1, "The port that this container exposes. If --expose is true, this is also the port used by the service that is created.")
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cmd.Flags().Int("hostport", -1, "The host port mapping for the container port. To demonstrate a single-machine container.")
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cmd.Flags().StringP("labels", "l", "", "Labels to apply to the pod(s).")
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cmd.Flags().BoolP("stdin", "i", false, "Keep stdin open on the container(s) in the pod, even if nothing is attached.")
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@ -95,7 +102,9 @@ func NewCmdRun(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer) *c
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cmd.Flags().Bool("command", false, "If true and extra arguments are present, use them as the 'command' field in the container, rather than the 'args' field which is the default.")
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cmd.Flags().String("requests", "", "The resource requirement requests for this container. For example, 'cpu=100m,memory=256Mi'")
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cmd.Flags().String("limits", "", "The resource requirement limits for this container. For example, 'cpu=200m,memory=512Mi'")
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return cmd
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cmd.Flags().Bool("expose", false, "If true, a public, external service is created for the container(s) which are run")
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cmd.Flags().String("service-generator", "service/v2", "The name of the generator to use for creating a service. Only used if --expose is true")
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cmd.Flags().String("service-overrides", "", "An inline JSON override for the generated service object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field. Only used if --expose is true.")
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}
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func Run(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cobra.Command, args []string) error {
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@ -129,6 +138,7 @@ func Run(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cob
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if restartPolicy != api.RestartPolicyAlways && replicas != 1 {
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return cmdutil.UsageError(cmd, fmt.Sprintf("--restart=%s requires that --replicas=1, found %d", restartPolicy, replicas))
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}
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generatorName := cmdutil.GetFlagString(cmd, "generator")
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if len(generatorName) == 0 {
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if restartPolicy == api.RestartPolicyAlways {
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@ -150,64 +160,20 @@ func Run(f *cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cob
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params["env"] = cmdutil.GetFlagStringSlice(cmd, "env")
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err = kubectl.ValidateParams(names, params)
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if err != nil {
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return err
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}
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obj, err := generator.Generate(params)
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if err != nil {
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return err
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}
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mapper, typer := f.Object()
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version, kind, err := typer.ObjectVersionAndKind(obj)
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if err != nil {
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return err
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}
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inline := cmdutil.GetFlagString(cmd, "overrides")
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if len(inline) > 0 {
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obj, err = cmdutil.Merge(obj, inline, kind)
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if err != nil {
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if cmdutil.GetFlagBool(cmd, "expose") {
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serviceGenerator := cmdutil.GetFlagString(cmd, "service-generator")
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if len(serviceGenerator) == 0 {
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return cmdutil.UsageError(cmd, fmt.Sprintf("No service generator specified"))
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}
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if err := generateService(f, cmd, args, serviceGenerator, params, namespace, cmdOut); err != nil {
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return err
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}
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}
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mapping, err := mapper.RESTMapping(kind, version)
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obj, kind, mapper, mapping, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "overrides"), namespace)
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if err != nil {
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return err
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}
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client, err := f.RESTClient(mapping)
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if err != nil {
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return err
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}
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// TODO: extract this flag to a central location, when such a location exists.
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if !cmdutil.GetFlagBool(cmd, "dry-run") {
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resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
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info, err := resourceMapper.InfoForObject(obj)
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if err != nil {
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return err
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}
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// Serialize the configuration into an annotation.
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if err := kubectl.UpdateApplyAnnotation(info); err != nil {
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return err
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}
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// Serialize the object with the annotation applied.
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data, err := mapping.Codec.Encode(info.Object)
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if err != nil {
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return err
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}
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obj, err = resource.NewHelper(client, mapping).Create(namespace, false, data)
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if err != nil {
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return err
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}
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}
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attachFlag := cmd.Flags().Lookup("attach")
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attach := cmdutil.GetFlagBool(cmd, "attach")
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@ -337,3 +303,110 @@ func getRestartPolicy(cmd *cobra.Command, interactive bool) (api.RestartPolicy,
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return "", cmdutil.UsageError(cmd, fmt.Sprintf("invalid restart policy: %s", restart))
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}
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}
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func generateService(f *cmdutil.Factory, cmd *cobra.Command, args []string, serviceGenerator string, paramsIn map[string]interface{}, namespace string, out io.Writer) error {
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generator, found := f.Generator(serviceGenerator)
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if !found {
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return fmt.Errorf("missing service generator: %s", serviceGenerator)
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}
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names := generator.ParamNames()
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port := cmdutil.GetFlagInt(cmd, "port")
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if port < 1 {
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return fmt.Errorf("--port must be a positive integer when exposing a service")
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}
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params := map[string]interface{}{}
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for key, value := range paramsIn {
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_, isString := value.(string)
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if isString {
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params[key] = value
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}
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}
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name, found := params["name"]
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if !found || len(name.(string)) == 0 {
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return fmt.Errorf("name is a required parameter")
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}
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selector, found := params["labels"]
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if !found || len(selector.(string)) == 0 {
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selector = fmt.Sprintf("run=%s", name.(string))
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}
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params["selector"] = selector
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if defaultName, found := params["default-name"]; !found || len(defaultName.(string)) == 0 {
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params["default-name"] = name
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}
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obj, _, mapper, mapping, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "service-overrides"), namespace)
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if err != nil {
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return err
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}
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if cmdutil.GetFlagString(cmd, "output") != "" {
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return f.PrintObject(cmd, obj, out)
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}
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cmdutil.PrintSuccess(mapper, false, out, mapping.Resource, args[0], "created")
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return nil
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}
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func createGeneratedObject(f *cmdutil.Factory, cmd *cobra.Command, generator kubectl.Generator, names []kubectl.GeneratorParam, params map[string]interface{}, overrides, namespace string) (runtime.Object, string, meta.RESTMapper, *meta.RESTMapping, error) {
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err := kubectl.ValidateParams(names, params)
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if err != nil {
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return nil, "", nil, nil, err
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}
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obj, err := generator.Generate(params)
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if err != nil {
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return nil, "", nil, nil, err
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}
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mapper, typer := f.Object()
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version, kind, err := typer.ObjectVersionAndKind(obj)
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if err != nil {
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return nil, "", nil, nil, err
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}
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|
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if len(overrides) > 0 {
|
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obj, err = cmdutil.Merge(obj, overrides, kind)
|
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if err != nil {
|
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return nil, "", nil, nil, err
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}
|
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}
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mapping, err := mapper.RESTMapping(kind, version)
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if err != nil {
|
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return nil, "", nil, nil, err
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}
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client, err := f.RESTClient(mapping)
|
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if err != nil {
|
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return nil, "", nil, nil, err
|
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}
|
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|
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// TODO: extract this flag to a central location, when such a location exists.
|
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if !cmdutil.GetFlagBool(cmd, "dry-run") {
|
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resourceMapper := &resource.Mapper{ObjectTyper: typer, RESTMapper: mapper, ClientMapper: f.ClientMapperForCommand()}
|
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info, err := resourceMapper.InfoForObject(obj)
|
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if err != nil {
|
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return nil, "", nil, nil, err
|
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}
|
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|
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// Serialize the configuration into an annotation.
|
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if err := kubectl.UpdateApplyAnnotation(info); err != nil {
|
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return nil, "", nil, nil, err
|
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}
|
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|
||||
// Serialize the object with the annotation applied.
|
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data, err := mapping.Codec.Encode(info.Object)
|
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if err != nil {
|
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return nil, "", nil, nil, err
|
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}
|
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|
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obj, err = resource.NewHelper(client, mapping).Create(namespace, false, data)
|
||||
if err != nil {
|
||||
return nil, "", nil, nil, err
|
||||
}
|
||||
}
|
||||
return obj, kind, mapper, mapping, err
|
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}
|
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|
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@ -17,12 +17,20 @@ limitations under the License.
|
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package cmd
|
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|
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import (
|
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"bytes"
|
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"fmt"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/api/testapi"
|
||||
client "k8s.io/kubernetes/pkg/client/unversioned"
|
||||
"k8s.io/kubernetes/pkg/client/unversioned/fake"
|
||||
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
|
||||
"k8s.io/kubernetes/pkg/util"
|
||||
)
|
||||
|
||||
func TestGetRestartPolicy(t *testing.T) {
|
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@ -97,3 +105,160 @@ func TestGetEnv(t *testing.T) {
|
||||
t.Errorf("expected: %s, saw: %s", test.expected, envStrings)
|
||||
}
|
||||
}
|
||||
|
||||
func TestGenerateService(t *testing.T) {
|
||||
|
||||
tests := []struct {
|
||||
port string
|
||||
args []string
|
||||
serviceGenerator string
|
||||
params map[string]interface{}
|
||||
expectErr bool
|
||||
name string
|
||||
service api.Service
|
||||
expectPOST bool
|
||||
}{
|
||||
{
|
||||
port: "80",
|
||||
args: []string{"foo"},
|
||||
serviceGenerator: "service/v2",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
},
|
||||
expectErr: false,
|
||||
name: "basic",
|
||||
service: api.Service{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
Name: "foo",
|
||||
},
|
||||
Spec: api.ServiceSpec{
|
||||
Ports: []api.ServicePort{
|
||||
{
|
||||
Port: 80,
|
||||
Protocol: "TCP",
|
||||
TargetPort: util.NewIntOrStringFromInt(80),
|
||||
},
|
||||
},
|
||||
Selector: map[string]string{
|
||||
"run": "foo",
|
||||
},
|
||||
Type: api.ServiceTypeClusterIP,
|
||||
SessionAffinity: api.ServiceAffinityNone,
|
||||
},
|
||||
},
|
||||
expectPOST: true,
|
||||
},
|
||||
{
|
||||
port: "80",
|
||||
args: []string{"foo"},
|
||||
serviceGenerator: "service/v2",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"labels": "app=bar",
|
||||
},
|
||||
expectErr: false,
|
||||
name: "custom labels",
|
||||
service: api.Service{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
Name: "foo",
|
||||
Labels: map[string]string{"app": "bar"},
|
||||
},
|
||||
Spec: api.ServiceSpec{
|
||||
Ports: []api.ServicePort{
|
||||
{
|
||||
Port: 80,
|
||||
Protocol: "TCP",
|
||||
TargetPort: util.NewIntOrStringFromInt(80),
|
||||
},
|
||||
},
|
||||
Selector: map[string]string{
|
||||
"app": "bar",
|
||||
},
|
||||
Type: api.ServiceTypeClusterIP,
|
||||
SessionAffinity: api.ServiceAffinityNone,
|
||||
},
|
||||
},
|
||||
expectPOST: true,
|
||||
},
|
||||
{
|
||||
expectErr: true,
|
||||
name: "missing port",
|
||||
expectPOST: false,
|
||||
},
|
||||
{
|
||||
port: "80",
|
||||
args: []string{"foo"},
|
||||
serviceGenerator: "service/v2",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
},
|
||||
expectErr: false,
|
||||
name: "dry-run",
|
||||
expectPOST: false,
|
||||
},
|
||||
}
|
||||
for _, test := range tests {
|
||||
sawPOST := false
|
||||
f, tf, codec := NewAPIFactory()
|
||||
tf.ClientConfig = &client.Config{Version: testapi.Default.Version()}
|
||||
tf.Client = &fake.RESTClient{
|
||||
Codec: codec,
|
||||
Client: fake.HTTPClientFunc(func(req *http.Request) (*http.Response, error) {
|
||||
switch p, m := req.URL.Path, req.Method; {
|
||||
case test.expectPOST && m == "POST" && p == "/namespaces/namespace/services":
|
||||
sawPOST = true
|
||||
body := objBody(codec, &test.service)
|
||||
data, err := ioutil.ReadAll(req.Body)
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
t.FailNow()
|
||||
}
|
||||
defer req.Body.Close()
|
||||
svc := &api.Service{}
|
||||
if err := codec.DecodeInto(data, svc); err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
t.FailNow()
|
||||
}
|
||||
// Copy things that are defaulted by the system
|
||||
test.service.Annotations = svc.Annotations
|
||||
|
||||
if !reflect.DeepEqual(&test.service, svc) {
|
||||
t.Errorf("expected:\n%v\nsaw:\n%v\n", &test.service, svc)
|
||||
}
|
||||
return &http.Response{StatusCode: 200, Body: body}, nil
|
||||
default:
|
||||
// Ensures no GET is performed when deleting by name
|
||||
t.Errorf("%s: unexpected request: %s %#v\n%#v", test.name, req.Method, req.URL, req)
|
||||
return nil, fmt.Errorf("unexpected request")
|
||||
}
|
||||
}),
|
||||
}
|
||||
cmd := &cobra.Command{}
|
||||
cmd.Flags().String("output", "", "")
|
||||
addRunFlags(cmd)
|
||||
|
||||
if !test.expectPOST {
|
||||
cmd.Flags().Set("dry-run", "true")
|
||||
}
|
||||
|
||||
if len(test.port) > 0 {
|
||||
cmd.Flags().Set("port", test.port)
|
||||
test.params["port"] = test.port
|
||||
}
|
||||
|
||||
buff := &bytes.Buffer{}
|
||||
err := generateService(f, cmd, test.args, test.serviceGenerator, test.params, "namespace", buff)
|
||||
if test.expectErr {
|
||||
if err == nil {
|
||||
t.Error("unexpected non-error")
|
||||
}
|
||||
continue
|
||||
}
|
||||
if err != nil {
|
||||
t.Errorf("unexpected error: %v", err)
|
||||
}
|
||||
if test.expectPOST != sawPOST {
|
||||
t.Error("expectPost: %v, sawPost: %v", test.expectPOST, sawPOST)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user