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authorbaude <bbaude@redhat.com>2018-11-21 16:00:50 -0600
committerbaude <bbaude@redhat.com>2018-12-04 08:03:49 -0600
commitc8436b4912656766df79c37aed3479afe72ca111 (patch)
tree290ddb53830a866a9893e0a80faff9ea766240d1 /cmd/podman
parent5f6ad82524ca7a3281c8464c84b4f9be4ff90aef (diff)
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generate kube
add the ability to generate kubernetes pod and service yaml representations of libpod containers and pods. Signed-off-by: baude <bbaude@redhat.com>
Diffstat (limited to 'cmd/podman')
-rw-r--r--cmd/podman/generate.go23
-rw-r--r--cmd/podman/generate_kube.go (renamed from cmd/podman/kube_generate.go)67
-rw-r--r--cmd/podman/kube.go23
3 files changed, 62 insertions, 51 deletions
diff --git a/cmd/podman/generate.go b/cmd/podman/generate.go
new file mode 100644
index 000000000..765d0ee70
--- /dev/null
+++ b/cmd/podman/generate.go
@@ -0,0 +1,23 @@
+package main
+
+import (
+ "github.com/urfave/cli"
+)
+
+var (
+ generateSubCommands = []cli.Command{
+ containerKubeCommand,
+ }
+
+ generateDescription = "generate structured data based for a containers and pods"
+ kubeCommand = cli.Command{
+ Name: "generate",
+ Usage: "generated structured data",
+ Description: generateDescription,
+ ArgsUsage: "",
+ Subcommands: generateSubCommands,
+ UseShortOptionHandling: true,
+ OnUsageError: usageErrorHandler,
+ Hidden: true,
+ }
+)
diff --git a/cmd/podman/kube_generate.go b/cmd/podman/generate_kube.go
index a18912668..de9f701b0 100644
--- a/cmd/podman/kube_generate.go
+++ b/cmd/podman/generate_kube.go
@@ -6,10 +6,11 @@ import (
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
+ podmanVersion "github.com/containers/libpod/version"
"github.com/ghodss/yaml"
"github.com/pkg/errors"
- "github.com/sirupsen/logrus"
"github.com/urfave/cli"
+ "k8s.io/api/core/v1"
)
var (
@@ -18,16 +19,15 @@ var (
Name: "service, s",
Usage: "only generate YAML for kubernetes service object",
},
- LatestFlag,
}
containerKubeDescription = "Generate Kubernetes Pod YAML"
containerKubeCommand = cli.Command{
- Name: "generate",
- Usage: "Generate Kubernetes pod YAML for a container",
+ Name: "kube",
+ Usage: "Generate Kubernetes pod YAML for a container or pod",
Description: containerKubeDescription,
Flags: sortFlags(containerKubeFlags),
Action: generateKubeYAMLCmd,
- ArgsUsage: "CONTAINER-NAME",
+ ArgsUsage: "CONTAINER|POD-NAME",
UseShortOptionHandling: true,
OnUsageError: usageErrorHandler,
}
@@ -36,9 +36,13 @@ var (
// generateKubeYAMLCmdgenerates or replays kube
func generateKubeYAMLCmd(c *cli.Context) error {
var (
- container *libpod.Container
- err error
- output []byte
+ podYAML *v1.Pod
+ container *libpod.Container
+ err error
+ output []byte
+ pod *libpod.Pod
+ mashalledBytes []byte
+ servicePorts []v1.ServicePort
)
if rootless.IsRootless() {
@@ -46,10 +50,7 @@ func generateKubeYAMLCmd(c *cli.Context) error {
}
args := c.Args()
if len(args) > 1 || (len(args) < 1 && !c.Bool("latest")) {
- return errors.Errorf("you must provide one container ID or name or --latest")
- }
- if c.Bool("service") {
- return errors.Wrapf(libpod.ErrNotImplemented, "service generation")
+ return errors.Errorf("you must provide one container|pod ID or name or --latest")
}
runtime, err := libpodruntime.GetRuntime(c)
@@ -59,33 +60,43 @@ func generateKubeYAMLCmd(c *cli.Context) error {
defer runtime.Shutdown(false)
// Get the container in question
- if c.Bool("latest") {
- container, err = runtime.GetLatestContainer()
+ container, err = runtime.LookupContainer(args[0])
+ if err != nil {
+ pod, err = runtime.LookupPod(args[0])
+ if err != nil {
+ return err
+ }
+ podYAML, servicePorts, err = pod.GenerateForKube()
} else {
- container, err = runtime.LookupContainer(args[0])
+ if len(container.Dependencies()) > 0 {
+ return errors.Wrapf(libpod.ErrNotImplemented, "containers with dependencies")
+ }
+ podYAML, err = container.GenerateForKube()
}
if err != nil {
return err
}
- if len(container.Dependencies()) > 0 {
- return errors.Wrapf(libpod.ErrNotImplemented, "containers with dependencies")
+ if c.Bool("service") {
+ serviceYAML := libpod.GenerateKubeServiceFromV1Pod(podYAML, servicePorts)
+ mashalledBytes, err = yaml.Marshal(serviceYAML)
+ } else {
+ // Marshall the results
+ mashalledBytes, err = yaml.Marshal(podYAML)
}
-
- podYAML, err := container.InspectForKube()
if err != nil {
return err
}
- developmentComment := []byte("# Generation of Kubenetes YAML is still under development!\n")
- logrus.Warn("This function is still under heavy development.")
- // Marshall the results
- b, err := yaml.Marshal(podYAML)
- if err != nil {
- return err
- }
- output = append(output, developmentComment...)
- output = append(output, b...)
+ header := `# Generation of Kubenetes YAML is still under development!
+#
+# Save the output of this file and use kubectl create -f to import
+# it into Kubernetes.
+#
+# Created with podman-%s
+`
+ output = append(output, []byte(fmt.Sprintf(header, podmanVersion.Version))...)
+ output = append(output, mashalledBytes...)
// Output the v1.Pod with the v1.Container
fmt.Println(string(output))
diff --git a/cmd/podman/kube.go b/cmd/podman/kube.go
deleted file mode 100644
index 2cb407c09..000000000
--- a/cmd/podman/kube.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package main
-
-import (
- "github.com/urfave/cli"
-)
-
-var (
- kubeSubCommands = []cli.Command{
- containerKubeCommand,
- }
-
- kubeDescription = "Work with Kubernetes objects"
- kubeCommand = cli.Command{
- Name: "kube",
- Usage: "Import and export Kubernetes objections from and to Podman",
- Description: containerDescription,
- ArgsUsage: "",
- Subcommands: kubeSubCommands,
- UseShortOptionHandling: true,
- OnUsageError: usageErrorHandler,
- Hidden: true,
- }
-)