APIv2 Add network list filtering

Add the filter option to the libpod endpoint.
Add support for the name filter on the docker endpoint.

Add apiv2 tests for the network list endpoints.
Enable podman network integration tests for remote.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

3 files changed, 45 insertions, 3 deletions

diff --git a/pkg/api/handlers/compat/networks.go b/pkg/api/handlers/compat/networks.go
index 80b7505df..87b947549 100644
--- a/pkg/api/handlers/compat/networks.go
+++ b/pkg/api/handlers/compat/networks.go
@@ -5,6 +5,7 @@ import (
 	"net"
 	"net/http"
 	"os"
+	"strings"
 	"syscall"
 	"time"
 
@@ -177,9 +178,11 @@ func ListNetworks(w http.ResponseWriter, r *http.Request) {
 		utils.InternalServerError(w, err)
 		return
 	}
+
+	filterNames, nameFilterExists := query.Filters["name"]
 	// TODO remove when filters are implemented
-	if len(query.Filters) > 0 {
-		utils.InternalServerError(w, errors.New("filters for listing networks is not implemented"))
+	if (!nameFilterExists && len(query.Filters) > 0) || len(query.Filters) > 1 {
+		utils.InternalServerError(w, errors.New("only the name filter for listing networks is implemented"))
 		return
 	}
 	netNames, err := network.GetNetworkNamesFromFileSystem(config)
@@ -187,6 +190,21 @@ func ListNetworks(w http.ResponseWriter, r *http.Request) {
 		utils.InternalServerError(w, err)
 		return
 	}
+
+	// filter by name
+	if nameFilterExists {
+		names := []string{}
+		for _, name := range netNames {
+			for _, filter := range filterNames {
+				if strings.Contains(name, filter) {
+					names = append(names, name)
+					break
+				}
+			}
+		}
+		netNames = names
+	}
+
 	reports := make([]*types.NetworkResource, 0, len(netNames))
 	for _, name := range netNames {
 		report, err := getNetworkResourceByName(name, runtime)
diff --git a/pkg/api/handlers/libpod/networks.go b/pkg/api/handlers/libpod/networks.go
index 475522664..dfece2a4e 100644
--- a/pkg/api/handlers/libpod/networks.go
+++ b/pkg/api/handlers/libpod/networks.go
@@ -42,7 +42,21 @@ func CreateNetwork(w http.ResponseWriter, r *http.Request) {
 }
 func ListNetworks(w http.ResponseWriter, r *http.Request) {
 	runtime := r.Context().Value("runtime").(*libpod.Runtime)
-	options := entities.NetworkListOptions{}
+	decoder := r.Context().Value("decoder").(*schema.Decoder)
+	query := struct {
+		Filter string `schema:"filter"`
+	}{
+		// override any golang type defaults
+	}
+	if err := decoder.Decode(&query, r.URL.Query()); err != nil {
+		utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest,
+			errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String()))
+		return
+	}
+
+	options := entities.NetworkListOptions{
+		Filter: query.Filter,
+	}
 	ic := abi.ContainerEngine{Libpod: runtime}
 	reports, err := ic.NetworkList(r.Context(), options)
 	if err != nil {
diff --git a/pkg/api/server/register_networks.go b/pkg/api/server/register_networks.go
index 7918ad4a2..f12b45e10 100644
--- a/pkg/api/server/register_networks.go
+++ b/pkg/api/server/register_networks.go
@@ -61,6 +61,11 @@ func (s *APIServer) registerNetworkHandlers(r *mux.Router) error {
 	//  - networks (compat)
 	// summary: List networks
 	// description: Display summary of network configurations
+	// parameters:
+	//  - in: query
+	//    name: filters
+	//    type: string
+	//    description: JSON encoded value of the filters (a map[string][]string) to process on the networks list. Only the name filter is supported.
 	// produces:
 	// - application/json
 	// responses:
@@ -152,6 +157,11 @@ func (s *APIServer) registerNetworkHandlers(r *mux.Router) error {
 	//  - networks
 	// summary: List networks
 	// description: Display summary of network configurations
+	// parameters:
+	//  - in: query
+	//    name: filter
+	//    type: string
+	//    description: Provide filter values (e.g. 'name=podman')
 	// produces:
 	// - application/json
 	// responses: