podman generate spec

implement a new command `podman generate spec` which can formulate a json specgen to be consumed by both the pod
and container creation API.

supported flags are

--verbose (default true) print output to the terminal
--compact print the json output in a single line format to be piped to the API
--filename put the output in a file
--clone rename the pod/ctr in the spec so it won't conflict w/ an existing entity

Signed-off-by: Charlie Doern <cdoern@redhat.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/test/e2e/generate_spec_test.go b/test/e2e/generate_spec_test.go
new file mode 100644
index 000000000..57cd9546b
--- /dev/null
+++ b/test/e2e/generate_spec_test.go
@@ -0,0 +1,80 @@
+package integration
+
+import (
+	"os"
+	"path/filepath"
+
+	. "github.com/containers/podman/v4/test/utils"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	. "github.com/onsi/gomega/gexec"
+)
+
+var _ = Describe("Podman generate spec", func() {
+	var (
+		tempdir    string
+		err        error
+		podmanTest *PodmanTestIntegration
+	)
+
+	BeforeEach(func() {
+		SkipIfRemote("podman generate spec is not supported on the remote client")
+		tempdir, err = CreateTempDirInTempDir()
+		if err != nil {
+			os.Exit(1)
+		}
+		podmanTest = PodmanTestCreate(tempdir)
+		podmanTest.Setup()
+	})
+
+	AfterEach(func() {
+		podmanTest.Cleanup()
+		f := CurrentGinkgoTestDescription()
+		processTestResult(f)
+
+	})
+
+	It("podman generate spec bogus should fail", func() {
+		session := podmanTest.Podman([]string{"generate", "spec", "foobar"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(ExitWithError())
+	})
+
+	It("podman generate spec basic usage", func() {
+		session := podmanTest.Podman([]string{"create", "--cpus", "5", "--name", "specgen", ALPINE})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+
+		session = podmanTest.Podman([]string{"generate", "spec", "--compact", "specgen"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+	})
+
+	It("podman generate spec file", func() {
+		session := podmanTest.Podman([]string{"create", "--cpus", "5", "--name", "specgen", ALPINE})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+
+		session = podmanTest.Podman([]string{"generate", "spec", "--filename", filepath.Join(tempdir, "out.json"), "specgen"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+
+		path := filepath.Join(tempdir, "out.json")
+
+		exec := SystemExec("cat", []string{path})
+		exec.WaitWithDefaultTimeout()
+		Expect(exec.OutputToString()).Should(ContainSubstring("specgen-clone"))
+		Expect(exec.OutputToString()).Should(ContainSubstring("500000"))
+
+	})
+
+	It("generate spec pod", func() {
+		session := podmanTest.Podman([]string{"pod", "create", "--cpus", "5", "--name", "podspecgen"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+
+		session = podmanTest.Podman([]string{"generate", "spec", "--compact", "podspecgen"})
+		session.WaitWithDefaultTimeout()
+		Expect(session).Should(Exit(0))
+	})
+})