API returns 500 in case network is not found instead of 404

Signed-off-by: zhangguanzhang <zhangguanzhang@qq.com>

3 files changed, 4 insertions, 7 deletions

diff --git a/pkg/network/config.go b/pkg/network/config.go
index a504e0ad0..0115433e1 100644
--- a/pkg/network/config.go
+++ b/pkg/network/config.go
@@ -2,7 +2,6 @@ package network
 
 import (
 	"encoding/json"
-	"errors"
 	"net"
 )
 
@@ -20,10 +19,6 @@ const (
 	DefaultPodmanDomainName = "dns.podman"
 )
 
-var (
-	ErrNetworkNotFound = errors.New("network not found")
-)
-
 // GetDefaultPodmanNetwork outputs the default network for podman
 func GetDefaultPodmanNetwork() (*net.IPNet, error) {
 	_, n, err := net.ParseCIDR("10.88.1.0/24")
diff --git a/pkg/network/files.go b/pkg/network/files.go
index beb3289f3..38ce38b97 100644
--- a/pkg/network/files.go
+++ b/pkg/network/files.go
@@ -10,6 +10,7 @@ import (
 	"github.com/containernetworking/cni/libcni"
 	"github.com/containernetworking/plugins/plugins/ipam/host-local/backend/allocator"
 	"github.com/containers/common/pkg/config"
+	"github.com/containers/podman/v2/libpod/define"
 	"github.com/pkg/errors"
 )
 
@@ -55,7 +56,7 @@ func GetCNIConfigPathByName(config *config.Config, name string) (string, error)
 			return confFile, nil
 		}
 	}
-	return "", errors.Wrap(ErrNetworkNotFound, fmt.Sprintf("unable to find network configuration for %s", name))
+	return "", errors.Wrap(define.ErrNoSuchNetwork, fmt.Sprintf("unable to find network configuration for %s", name))
 }
 
 // ReadRawCNIConfByName reads the raw CNI configuration for a CNI
diff --git a/pkg/network/network.go b/pkg/network/network.go
index 6c84c8a8a..b24c72f5f 100644
--- a/pkg/network/network.go
+++ b/pkg/network/network.go
@@ -8,6 +8,7 @@ import (
 	"github.com/containernetworking/cni/pkg/types"
 	"github.com/containernetworking/plugins/plugins/ipam/host-local/backend/allocator"
 	"github.com/containers/common/pkg/config"
+	"github.com/containers/podman/v2/libpod/define"
 	"github.com/containers/podman/v2/pkg/util"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -200,7 +201,7 @@ func InspectNetwork(config *config.Config, name string) (map[string]interface{},
 func Exists(config *config.Config, name string) (bool, error) {
 	_, err := ReadRawCNIConfByName(config, name)
 	if err != nil {
-		if errors.Cause(err) == ErrNetworkNotFound {
+		if errors.Cause(err) == define.ErrNoSuchNetwork {
 			return false, nil
 		}
 		return false, err