add network prune

add the ability to prune unused cni networks.  filters are not implemented
but included both compat and podman api endpoints.

Fixes :#8673

Signed-off-by: baude <bbaude@redhat.com>

4 files changed, 43 insertions, 0 deletions

diff --git a/pkg/domain/entities/engine_container.go b/pkg/domain/entities/engine_container.go
index 39bda1d72..2c97d7baf 100644
--- a/pkg/domain/entities/engine_container.go
+++ b/pkg/domain/entities/engine_container.go
@@ -63,6 +63,7 @@ type ContainerEngine interface {
 	NetworkExists(ctx context.Context, networkname string) (*BoolReport, error)
 	NetworkInspect(ctx context.Context, namesOrIds []string, options InspectOptions) ([]NetworkInspectReport, []error, error)
 	NetworkList(ctx context.Context, options NetworkListOptions) ([]*NetworkListReport, error)
+	NetworkPrune(ctx context.Context, options NetworkPruneOptions) ([]*NetworkPruneReport, error)
 	NetworkReload(ctx context.Context, names []string, options NetworkReloadOptions) ([]*NetworkReloadReport, error)
 	NetworkRm(ctx context.Context, namesOrIds []string, options NetworkRmOptions) ([]*NetworkRmReport, error)
 	PlayKube(ctx context.Context, path string, opts PlayKubeOptions) (*PlayKubeReport, error)
diff --git a/pkg/domain/entities/network.go b/pkg/domain/entities/network.go
index b76bfcac7..1859f920e 100644
--- a/pkg/domain/entities/network.go
+++ b/pkg/domain/entities/network.go
@@ -80,3 +80,15 @@ type NetworkConnectOptions struct {
 	Aliases   []string
 	Container string
 }
+
+// NetworkPruneReport containers the name of network and an error
+// associated in its pruning (removal)
+// swagger:model NetworkPruneReport
+type NetworkPruneReport struct {
+	Name  string
+	Error error
+}
+
+// NetworkPruneOptions describes options for pruning
+// unused cni networks
+type NetworkPruneOptions struct{}
diff --git a/pkg/domain/infra/abi/network.go b/pkg/domain/infra/abi/network.go
index bc4328fcd..13fabe89d 100644
--- a/pkg/domain/infra/abi/network.go
+++ b/pkg/domain/infra/abi/network.go
@@ -155,3 +155,28 @@ func (ic *ContainerEngine) NetworkExists(ctx context.Context, networkname string
 		Value: exists,
 	}, nil
 }
+
+// Network prune removes unused cni networks
+func (ic *ContainerEngine) NetworkPrune(ctx context.Context, options entities.NetworkPruneOptions) ([]*entities.NetworkPruneReport, error) {
+	runtimeConfig, err := ic.Libpod.GetConfig()
+	if err != nil {
+		return nil, err
+	}
+	cons, err := ic.Libpod.GetAllContainers()
+	if err != nil {
+		return nil, err
+	}
+	// Gather up all the non-default networks that the
+	// containers want
+	usedNetworks := make(map[string]bool)
+	for _, c := range cons {
+		nets, _, err := c.Networks()
+		if err != nil {
+			return nil, err
+		}
+		for _, n := range nets {
+			usedNetworks[n] = true
+		}
+	}
+	return network.PruneNetworks(runtimeConfig, usedNetworks)
+}
diff --git a/pkg/domain/infra/tunnel/network.go b/pkg/domain/infra/tunnel/network.go
index bdb1beb03..990bfa880 100644
--- a/pkg/domain/infra/tunnel/network.go
+++ b/pkg/domain/infra/tunnel/network.go
@@ -89,3 +89,8 @@ func (ic *ContainerEngine) NetworkExists(ctx context.Context, networkname string
 		Value: exists,
 	}, nil
 }
+
+// Network prune removes unused cni networks
+func (ic *ContainerEngine) NetworkPrune(ctx context.Context, options entities.NetworkPruneOptions) ([]*entities.NetworkPruneReport, error) {
+	return network.Prune(ic.ClientCtx, nil)
+}