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Add support for external container

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External containers are containers created outside of Podman.
For example Buildah and CRI-O Containers.

$ buildah from alpine
alpine-working-container
$ buildah run alpine-working-container touch /test
$ podman container exists --external alpine-working-container

$ podman container diff alpine-working-container
C /etc
A /test

Added --external flag to refer to external containers, rather then --storage.

Added --external for podman container exists and modified podman ps to use
--external rather then --storage.  It was felt that --storage would confuse
the user into thinking about changing the storage driver or options.

--storage is still supported through the use of aliases.

Finally podman contianer diff, does not require the --external flag, since it
there is little change of users making the mistake, and would just be a pain
for the user to remember the flag.

podman container exists --external is required because it could fool scripts
that rely on the existance of a Podman container, and there is a potential
for a partial deletion of a container, which could mess up existing users.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This commit is contained in:
Daniel J Walsh
2020-10-07 15:27:54 -04:00
parent 22c8270135
commit db23e12611
15 changed files with 143 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
pkg/bindings/test/containers_test.go
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@@ -405,7 +405,7 @@ var _ = Describe("Podman containers ", func() {
It("podman bogus container does not exist in local storage", func() {
// Bogus container existence check should fail
containerExists, err := containers.Exists(bt.conn, "foobar")
containerExists, err := containers.Exists(bt.conn, "foobar", false)
Expect(err).To(BeNil())
Expect(containerExists).To(BeFalse())
})
@@ -415,7 +415,7 @@ var _ = Describe("Podman containers ", func() {
var name = "top"
_, err := bt.RunTopContainer(&name, bindings.PFalse, nil)
Expect(err).To(BeNil())
containerExists, err := containers.Exists(bt.conn, name)
containerExists, err := containers.Exists(bt.conn, name, false)
Expect(err).To(BeNil())
Expect(containerExists).To(BeTrue())
})
@@ -425,7 +425,7 @@ var _ = Describe("Podman containers ", func() {
var name = "top"
cid, err := bt.RunTopContainer(&name, bindings.PFalse, nil)
Expect(err).To(BeNil())
containerExists, err := containers.Exists(bt.conn, cid)
containerExists, err := containers.Exists(bt.conn, cid, false)
Expect(err).To(BeNil())
Expect(containerExists).To(BeTrue())
})
@@ -435,7 +435,7 @@ var _ = Describe("Podman containers ", func() {
var name = "top"
cid, err := bt.RunTopContainer(&name, bindings.PFalse, nil)
Expect(err).To(BeNil())
containerExists, err := containers.Exists(bt.conn, cid[0:12])
containerExists, err := containers.Exists(bt.conn, cid[0:12], false)
Expect(err).To(BeNil())
Expect(containerExists).To(BeTrue())
})
@@ -455,7 +455,7 @@ var _ = Describe("Podman containers ", func() {
Expect(err).To(BeNil())
err = containers.Kill(bt.conn, name, "SIGINT")
Expect(err).To(BeNil())
_, err = containers.Exists(bt.conn, name)
_, err = containers.Exists(bt.conn, name, false)
Expect(err).To(BeNil())
})
@@ -466,7 +466,7 @@ var _ = Describe("Podman containers ", func() {
Expect(err).To(BeNil())
err = containers.Kill(bt.conn, cid, "SIGTERM")
Expect(err).To(BeNil())
_, err = containers.Exists(bt.conn, cid)
_, err = containers.Exists(bt.conn, cid, false)
Expect(err).To(BeNil())
})