Add support for multiple CNI networks in podman inspect

When inspecting containers, info on CNI networks added to the
container by name (e.g. --net=name1) should be displayed
separately from the configuration of the default network, in a
separate map called Networks.

This patch adds this separation, improving our Docker
compatibility and also adding the ability to see if a container
has more than one IPv4 and IPv6 address and more than one MAC
address.

Fixes #4907

Signed-off-by: Matthew Heon <matthew.heon@pm.me>

test/e2e/network_test.go

@@ -4,13 +4,15 @@ package integration
 
 import (
 	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
 	. "github.com/containers/libpod/test/utils"
 	"github.com/containers/storage/pkg/stringid"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-	"io/ioutil"
-	"os"
-	"path/filepath"
 )
 
 func writeConf(conf []byte, confPath string) {
@@ -155,4 +157,76 @@ var _ = Describe("Podman network", func() {
 		Expect(session.IsJSONOutputValid()).To(BeTrue())
 	})
 
+	It("podman inspect container single CNI network", func() {
+		SkipIfRootless()
+		netName := "testNetSingleCNI"
+		network := podmanTest.Podman([]string{"network", "create", "--subnet", "10.50.50.0/24", netName})
+		network.WaitWithDefaultTimeout()
+		Expect(network.ExitCode()).To(BeZero())
+		defer podmanTest.removeCNINetwork(netName)
+
+		ctrName := "testCtr"
+		container := podmanTest.Podman([]string{"run", "-dt", "--network", netName, "--name", ctrName, ALPINE, "top"})
+		container.WaitWithDefaultTimeout()
+		Expect(container.ExitCode()).To(BeZero())
+
+		inspect := podmanTest.Podman([]string{"inspect", ctrName})
+		inspect.WaitWithDefaultTimeout()
+		Expect(inspect.ExitCode()).To(BeZero())
+		conData := inspect.InspectContainerToJSON()
+		Expect(len(conData)).To(Equal(1))
+		Expect(len(conData[0].NetworkSettings.Networks)).To(Equal(1))
+		net, ok := conData[0].NetworkSettings.Networks[netName]
+		Expect(ok).To(BeTrue())
+		Expect(net.NetworkID).To(Equal(netName))
+		Expect(net.IPPrefixLen).To(Equal(24))
+		Expect(strings.HasPrefix(net.IPAddress, "10.50.50.")).To(BeTrue())
+
+		// Necessary to ensure the CNI network is removed cleanly
+		rmAll := podmanTest.Podman([]string{"rm", "-f", ctrName})
+		rmAll.WaitWithDefaultTimeout()
+		Expect(rmAll.ExitCode()).To(BeZero())
+	})
+
+	It("podman inspect container two CNI networks", func() {
+		SkipIfRootless()
+		netName1 := "testNetTwoCNI1"
+		network1 := podmanTest.Podman([]string{"network", "create", "--subnet", "10.50.51.0/25", netName1})
+		network1.WaitWithDefaultTimeout()
+		Expect(network1.ExitCode()).To(BeZero())
+		defer podmanTest.removeCNINetwork(netName1)
+
+		netName2 := "testNetTwoCNI2"
+		network2 := podmanTest.Podman([]string{"network", "create", "--subnet", "10.50.51.128/26", netName2})
+		network2.WaitWithDefaultTimeout()
+		Expect(network2.ExitCode()).To(BeZero())
+		defer podmanTest.removeCNINetwork(netName2)
+
+		ctrName := "testCtr"
+		container := podmanTest.Podman([]string{"run", "-dt", "--network", fmt.Sprintf("%s,%s", netName1, netName2), "--name", ctrName, ALPINE, "top"})
+		container.WaitWithDefaultTimeout()
+		Expect(container.ExitCode()).To(BeZero())
+
+		inspect := podmanTest.Podman([]string{"inspect", ctrName})
+		inspect.WaitWithDefaultTimeout()
+		Expect(inspect.ExitCode()).To(BeZero())
+		conData := inspect.InspectContainerToJSON()
+		Expect(len(conData)).To(Equal(1))
+		Expect(len(conData[0].NetworkSettings.Networks)).To(Equal(2))
+		net1, ok := conData[0].NetworkSettings.Networks[netName1]
+		Expect(ok).To(BeTrue())
+		Expect(net1.NetworkID).To(Equal(netName1))
+		Expect(net1.IPPrefixLen).To(Equal(25))
+		Expect(strings.HasPrefix(net1.IPAddress, "10.50.51.")).To(BeTrue())
+		net2, ok := conData[0].NetworkSettings.Networks[netName2]
+		Expect(ok).To(BeTrue())
+		Expect(net2.NetworkID).To(Equal(netName2))
+		Expect(net2.IPPrefixLen).To(Equal(26))
+		Expect(strings.HasPrefix(net2.IPAddress, "10.50.51.")).To(BeTrue())
+
+		// Necessary to ensure the CNI network is removed cleanly
+		rmAll := podmanTest.Podman([]string{"rm", "-f", ctrName})
+		rmAll.WaitWithDefaultTimeout()
+		Expect(rmAll.ExitCode()).To(BeZero())
+	})
 })