We got some crashes in Fedora 34 testing.
Second part of this PR is to fix the config_test which is accitendtly
picking up a containers.conf settings from the host. This change forces
the default settings.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Add an event system to libimage. Callers can opt-in to using events by
requesting an event channel via `(*Runtime).EventChannel()`. The
returned channel has a buffer of size 100 which should be sufficient
even under high loads. But, to be on the safe side, writing an event
will time out after 2 seconds to prevent operations from blocking.
Currently, the only user of such an event system is Podman which will
need to convert the `Event` type to what's used internally in libpod.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Simplify the transports-sensitive dispatcher when pulling images and use
the default case for transports that do not require special casing.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Recently images tagged by 64 chars cannot be pulled when ommiting "docker://"
prefix. This commit fixes this issue.
Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
To remain backwards compatible with the old behavior of Podman, we need
to print the layers in the reverse order. Also make sure that we branch
correctly when `traversChildren` is true (`--whatrequires` in Podman).
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This package exposes a function for creating a default CNI
network configuration that can be used by Podman and Buildah.
This will allow us to stop shipping a default configuration file,
and instead create it on demand (once per Podman installation.
This allows for greater configurability by the user - set the
default subnet (and, later, default IPv6 subnet) in
containers.conf, and the config file will be created with those
settings.
Signed-off-by: Matthew Heon <mheon@redhat.com>
The following changes were not split into smaller commits since the
entire package is still work in progress and I want to keep moving:
* Various small fixes.
* The internal image cache has been removed as it's a recipe for
inconsistencies for longer running processes. This should make
libimage easier to use for CRI-O and a Podman service.
* LookupImage now returns storage.ErrUnknownImage rather than nil.
This simplifies the callers and makes sure we have a consistent
error.
* LookupImage is now able to handle manifests lists. Unless the
platform is explicitly ignored via the options, the matching
image within the manifest list is now returned. This greatly
simplifies the spec generation in Podman; no callers should have
to worry about this kind of detail.
* LookupImage has been refactored into smaller-sized and easier to
read functions.
* RemoveImages has been changed to assemble the data of removed or
untagged images. This comes in handy for pruning images. I am
heavily against having a dedicated API for pruning since the it's
really just a combination of filtering and removing images which
RemoveImages already supports. Hence these changes to satisfy
the needs of `podman image prune`.
Furthermore, it now returns an []error slice rather than a single
error. Again to make Podman happy which needs to inspect *all*
errors for setting the appropriate exit code.
* A rather large refactoring of the removal code along with very
verbose comments. Those were largely absent in the Podman code base
but there many rules and contracts embedded that I partially could
only reconstruct by manually tests and comparing to Docker.
* Add a new `containers={true,false}` filter which allows filtering
images whether they are used by containers (=true) or if no container
is using them (=false). This filter is required for pruning images
in Podman.
* `libimage/types` has been merged into `libimage`. Podman has to do
_a lot of_ massaging for the remote client already and the types
are pretty much nailed down for the remote API. Hence, I prefer to
do some translation between `libimage` types and what Podman needs
rather than splitting `libimage` in half without an obvious reason.
This way the package is self-contained allowing for an easier
navigation and maintenance.
* `libimage.PullPolicy` has been merged into `pkg/config.PullPolicy`
to have _one_ central place to deal with pull policies. The type
system in `pkg/config` sets "always" as the default unfortunately
but I think consistency is more important at that point.
* Added `CopyOptions.DirForceCompress` to enforce layer compression
when copying to a `dir` destination.
* We now use `github.com/disiqueira/gotree` for pretty printing image
trees. That greatly simplifies the code and we don't have to worry
about the logic of printing a tree. Note that trees are now always
printed top down!
* Added a new `libimage.ManifestList` type along with an API for local
lookups and performing certain operations on it to wrap around
`libimage/manifests` as previously done in `libpod/image` and other
places in Podman.
* Correct caching of `(*Image).Inspect`.
* In addition to username, password and credentials, allow for
speciying an identity token for copying images. That's needed for
Podman's remote API.
* Make image removal more tolerant toward corrupted images.
* A new "until=timestamp" filter that can be used by all APIs
supporting filtering.
* An empty string now resolves to PullPolicyMissing.
* `(*Runtime) systemContextCopy()` returns a deep copy of the runtime's
system context. Golang's shallow copies are very dangerous for long
running processes such as Podman's system service. Hence, we need to
make sure that base data is not altered over time. That adds another
external dependency but I do not see a way around that. Long term,
I desire a `(*containers/image/types.SystemContext).Copy()` function.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
This eliminates the concern of log files growing infinitely and also
records all containers for posterity rather then allowing the removal
of a container to destroy the record.
Partially fixes: https://github.com/containers/podman/issues/9158
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Signed-off-by: unknowndev233 <unknowndevQwQ@protonmail.com>
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