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Support "args" in static and tuning

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Support "args" field in JSON config to additional configuration
in static and tuning plugins.
This commit is contained in:
Tomofumi Hayashi
2019-03-22 18:38:23 +09:00
parent ccd683e1a3
commit a069a5f1a3
6 changed files with 314 additions and 0 deletions
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7
plugins/meta/tuning/README.md
View File

@ -64,3 +64,10 @@ Note: You may add `IgnoreUnknown=true` to allow loose CNI argument verification
The plugin also support following [capability argument](https://github.com/containernetworking/cni/blob/master/CONVENTIONS.md).
* `mac`: Pass MAC addresses for CNI interface
The following [args conventions](https://github.com/containernetworking/cni/blob/master/CONVENTIONS.md#args-in-network-config) are supported:
* `mac` (string, optional): MAC address (i.e. hardware address) of interface
* `mtu` (integer, optional): MTU of interface
* `promisc` (bool, optional): Change the promiscuous mode of interface
* `sysctl` (object, optional): Change system controls

32
plugins/meta/tuning/tuning.go
View File

@ -47,6 +47,16 @@ type TuningConf struct {
RuntimeConfig struct {
Mac string `json:"mac,omitempty"`
} `json:"runtimeConfig,omitempty"`
Args *struct {
A *IPAMArgs `json:"cni"`
} `json:"args"`
}
type IPAMArgs struct {
SysCtl *map[string]string `json:"sysctl"`
Mac *string `json:"mac,omitempty"`
Promisc *bool `json:"promisc,omitempty"`
Mtu *int `json:"mtu,omitempty"`
}
// MacEnvArgs represents CNI_ARG
@ -79,6 +89,28 @@ func parseConf(data []byte, envArgs string) (*TuningConf, error) {
conf.Mac = conf.RuntimeConfig.Mac
}
// Get args
if conf.Args != nil && conf.Args.A != nil {
if conf.Args.A.SysCtl != nil {
for k, v := range *conf.Args.A.SysCtl {
conf.SysCtl[k] = v
}
}
if conf.Args.A.Mac != nil {
conf.Mac = *conf.Args.A.Mac
}
if conf.Args.A.Promisc != nil {
conf.Promisc = *conf.Args.A.Promisc
}
if conf.Args.A.Mtu != nil {
conf.Mtu = *conf.Args.A.Mtu
}
}
return &conf, nil
}

185
plugins/meta/tuning/tuning_test.go
View File

@ -215,6 +215,67 @@ var _ = Describe("tuning plugin", func() {
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures promiscuous mode from args with ADD/DEL", func() {
conf := []byte(`{
"name": "test",
"type": "iplink",
"cniVersion": "0.3.1",
"args": {
"cni": {
"promisc": true
}
},
"prevResult": {
"interfaces": [
{"name": "dummy0", "sandbox":"netns"}
],
"ips": [
{
"version": "4",
"address": "10.0.0.2/24",
"gateway": "10.0.0.1",
"interface": 0
}
]
}
}`)
args := &skel.CmdArgs{
ContainerID: "dummy",
Netns: originalNS.Path(),
IfName: IFNAME,
StdinData: conf,
}
err := originalNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
r, _, err := testutils.CmdAddWithArgs(args, func() error {
return cmdAdd(args)
})
Expect(err).NotTo(HaveOccurred())
result, err := current.GetResult(r)
Expect(err).NotTo(HaveOccurred())
Expect(len(result.Interfaces)).To(Equal(1))
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
Expect(len(result.IPs)).To(Equal(1))
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
link, err := netlink.LinkByName(IFNAME)
Expect(err).NotTo(HaveOccurred())
Expect(link.Attrs().Promisc).To(Equal(1))
err = testutils.CmdDel(originalNS.Path(),
args.ContainerID, "", func() error { return cmdDel(args) })
Expect(err).NotTo(HaveOccurred())
return nil
})
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures mtu with ADD/DEL", func() {
conf := []byte(`{
"name": "test",
@ -272,6 +333,67 @@ var _ = Describe("tuning plugin", func() {
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures mtu from args with ADD/DEL", func() {
conf := []byte(`{
"name": "test",
"type": "iplink",
"cniVersion": "0.3.1",
"args": {
"cni": {
"mtu": 1454
}
},
"prevResult": {
"interfaces": [
{"name": "dummy0", "sandbox":"netns"}
],
"ips": [
{
"version": "4",
"address": "10.0.0.2/24",
"gateway": "10.0.0.1",
"interface": 0
}
]
}
}`)
args := &skel.CmdArgs{
ContainerID: "dummy",
Netns: originalNS.Path(),
IfName: IFNAME,
StdinData: conf,
}
err := originalNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
r, _, err := testutils.CmdAddWithArgs(args, func() error {
return cmdAdd(args)
})
Expect(err).NotTo(HaveOccurred())
result, err := current.GetResult(r)
Expect(err).NotTo(HaveOccurred())
Expect(len(result.Interfaces)).To(Equal(1))
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
Expect(len(result.IPs)).To(Equal(1))
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
link, err := netlink.LinkByName(IFNAME)
Expect(err).NotTo(HaveOccurred())
Expect(link.Attrs().MTU).To(Equal(1454))
err = testutils.CmdDel(originalNS.Path(),
args.ContainerID, "", func() error { return cmdDel(args) })
Expect(err).NotTo(HaveOccurred())
return nil
})
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures mac address (from conf file) with ADD/DEL", func() {
conf := []byte(`{
"name": "test",
@ -331,6 +453,69 @@ var _ = Describe("tuning plugin", func() {
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures mac address (from args) with ADD/DEL", func() {
conf := []byte(`{
"name": "test",
"type": "iplink",
"cniVersion": "0.3.1",
"args": {
"cni": {
"mac": "c2:11:22:33:44:55"
}
},
"prevResult": {
"interfaces": [
{"name": "dummy0", "sandbox":"netns"}
],
"ips": [
{
"version": "4",
"address": "10.0.0.2/24",
"gateway": "10.0.0.1",
"interface": 0
}
]
}
}`)
args := &skel.CmdArgs{
ContainerID: "dummy",
Netns: originalNS.Path(),
IfName: IFNAME,
StdinData: conf,
}
err := originalNS.Do(func(ns.NetNS) error {
defer GinkgoRecover()
r, _, err := testutils.CmdAddWithArgs(args, func() error {
return cmdAdd(args)
})
Expect(err).NotTo(HaveOccurred())
result, err := current.GetResult(r)
Expect(err).NotTo(HaveOccurred())
Expect(len(result.Interfaces)).To(Equal(1))
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
Expect(len(result.IPs)).To(Equal(1))
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
link, err := netlink.LinkByName(IFNAME)
Expect(err).NotTo(HaveOccurred())
hw, err := net.ParseMAC("c2:11:22:33:44:55")
Expect(err).NotTo(HaveOccurred())
Expect(link.Attrs().HardwareAddr).To(Equal(hw))
err = testutils.CmdDel(originalNS.Path(),
args.ContainerID, "", func() error { return cmdDel(args) })
Expect(err).NotTo(HaveOccurred())
return nil
})
Expect(err).NotTo(HaveOccurred())
})
It("configures and deconfigures mac address (from CNI_ARGS) with ADD/DEL", func() {
conf := []byte(`{
"name": "test",