diff options
Diffstat (limited to 'vendor/github.com')
18 files changed, 787 insertions, 368 deletions
diff --git a/vendor/github.com/containernetworking/cni/README.md b/vendor/github.com/containernetworking/cni/README.md index 793187c79..65ccda9f9 100644 --- a/vendor/github.com/containernetworking/cni/README.md +++ b/vendor/github.com/containernetworking/cni/README.md @@ -1,4 +1,5 @@ -[](https://travis-ci.org/containernetworking/cni) +[](https://travis-ci.org/containernetworking/cni) +[](https://ci.appveyor.com/project/cni-bot/cni/branch/master) [](https://coveralls.io/github/containernetworking/cni?branch=master) [](https://cryptic-tundra-43194.herokuapp.com/) @@ -8,7 +9,9 @@ # Community Sync Meeting -There is a community sync meeting for users and developers every 1-2 months. The next meeting will help on a Google Hangout and the link is in the [agenda](https://docs.google.com/document/d/10ECyT2mBGewsJUcmYmS8QNo1AcNgy2ZIe2xS7lShYhE/edit?usp=sharing) (Notes from previous meeting are also in this doc). The next meeting will be held on *Wednesday, June 21th* at *3:00pm UTC* [Add to Calendar]https://www.worldtimebuddy.com/?qm=1&lid=100,5,2643743,5391959&h=100&date=2017-6-21&sln=15-16). +There is a community sync meeting for users and developers every 1-2 months. The next meeting will help on a Google Hangout and the link is in the [agenda](https://docs.google.com/document/d/10ECyT2mBGewsJUcmYmS8QNo1AcNgy2ZIe2xS7lShYhE/edit?usp=sharing) (Notes from previous meeting are also in this doc). + +The next meeting will be held on *Wednesday, October 4th* at *3:00pm UTC / 11:00am EDT / 8:00am PDT* [Add to Calendar](https://www.worldtimebuddy.com/?qm=1&lid=100,5,2643743,5391959&h=100&date=2017-10-04&sln=15-16). --- @@ -35,11 +38,11 @@ To avoid duplication, we think it is prudent to define a common interface betwee ## Who is using CNI? ### Container runtimes - [rkt - container engine](https://coreos.com/blog/rkt-cni-networking.html) -- [Kurma - container runtime](http://kurma.io/) - [Kubernetes - a system to simplify container operations](http://kubernetes.io/docs/admin/network-plugins/) - [OpenShift - Kubernetes with additional enterprise features](https://github.com/openshift/origin/blob/master/docs/openshift_networking_requirements.md) - [Cloud Foundry - a platform for cloud applications](https://github.com/cloudfoundry-incubator/cf-networking-release) -- [Mesos - a distributed systems kernel](https://github.com/apache/mesos/blob/master/docs/cni.md) +- [Apache Mesos - a distributed systems kernel](https://github.com/apache/mesos/blob/master/docs/cni.md) +- [Amazon ECS - a highly scalable, high performance container management service](https://aws.amazon.com/ecs/) ### 3rd party plugins - [Project Calico - a layer 3 virtual network](https://github.com/projectcalico/calico-cni) @@ -54,6 +57,10 @@ To avoid duplication, we think it is prudent to define a common interface betwee - [Nuage CNI - Nuage Networks SDN plugin for network policy kubernetes support ](https://github.com/nuagenetworks/nuage-cni) - [Silk - a CNI plugin designed for Cloud Foundry](https://github.com/cloudfoundry-incubator/silk) - [Linen - a CNI plugin designed for overlay networks with Open vSwitch and fit in SDN/OpenFlow network environment](https://github.com/John-Lin/linen-cni) +- [Vhostuser - a Dataplane network plugin - Supports OVS-DPDK & VPP](https://github.com/intel/vhost-user-net-plugin) +- [Amazon ECS CNI Plugins - a collection of CNI Plugins to configure containers with Amazon EC2 elastic network interfaces (ENIs)](https://github.com/aws/amazon-ecs-cni-plugins) +- [Bonding CNI - a Link aggregating plugin to address failover and high availability network](https://github.com/Intel-Corp/bond-cni) +- [ovn-kubernetes - an container network plugin built on Open vSwitch (OVS) and Open Virtual Networking (OVN) with support for both Linux and Windows](https://github.com/openvswitch/ovn-kubernetes) The CNI team also maintains some [core plugins in a separate repository](https://github.com/containernetworking/plugins). diff --git a/vendor/github.com/containernetworking/cni/libcni/api.go b/vendor/github.com/containernetworking/cni/libcni/api.go index a23cbb2c5..d494e43d4 100644 --- a/vendor/github.com/containernetworking/cni/libcni/api.go +++ b/vendor/github.com/containernetworking/cni/libcni/api.go @@ -15,7 +15,11 @@ package libcni import ( + "encoding/json" + "fmt" + "io/ioutil" "os" + "path/filepath" "strings" "github.com/containernetworking/cni/pkg/invoke" @@ -23,6 +27,14 @@ import ( "github.com/containernetworking/cni/pkg/version" ) +var ( + CacheDir = "/var/lib/cni" +) + +// A RuntimeConf holds the arguments to one invocation of a CNI plugin +// excepting the network configuration, with the nested exception that +// the `runtimeConfig` from the network configuration is included +// here. type RuntimeConf struct { ContainerID string NetNS string @@ -34,6 +46,9 @@ type RuntimeConf struct { // in this map which match the capabilities of the plugin are passed // to the plugin CapabilityArgs map[string]interface{} + + // A cache directory in which to library data. Defaults to CacheDir + CacheDir string } type NetworkConfig struct { @@ -50,25 +65,38 @@ type NetworkConfigList struct { type CNI interface { AddNetworkList(net *NetworkConfigList, rt *RuntimeConf) (types.Result, error) + GetNetworkList(net *NetworkConfigList, rt *RuntimeConf) (types.Result, error) DelNetworkList(net *NetworkConfigList, rt *RuntimeConf) error AddNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) + GetNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) DelNetwork(net *NetworkConfig, rt *RuntimeConf) error } type CNIConfig struct { Path []string + exec invoke.Exec } // CNIConfig implements the CNI interface var _ CNI = &CNIConfig{} -func buildOneConfig(list *NetworkConfigList, orig *NetworkConfig, prevResult types.Result, rt *RuntimeConf) (*NetworkConfig, error) { +// NewCNIConfig returns a new CNIConfig object that will search for plugins +// in the given paths and use the given exec interface to run those plugins, +// or if the exec interface is not given, will use a default exec handler. +func NewCNIConfig(path []string, exec invoke.Exec) *CNIConfig { + return &CNIConfig{ + Path: path, + exec: exec, + } +} + +func buildOneConfig(name, cniVersion string, orig *NetworkConfig, prevResult types.Result, rt *RuntimeConf) (*NetworkConfig, error) { var err error inject := map[string]interface{}{ - "name": list.Name, - "cniVersion": list.CNIVersion, + "name": name, + "cniVersion": cniVersion, } // Add previous plugin result if prevResult != nil { @@ -119,21 +147,37 @@ func injectRuntimeConfig(orig *NetworkConfig, rt *RuntimeConf) (*NetworkConfig, return orig, nil } -// AddNetworkList executes a sequence of plugins with the ADD command -func (c *CNIConfig) AddNetworkList(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) { - var prevResult types.Result - for _, net := range list.Plugins { - pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path) - if err != nil { - return nil, err +// ensure we have a usable exec if the CNIConfig was not given one +func (c *CNIConfig) ensureExec() invoke.Exec { + if c.exec == nil { + c.exec = &invoke.DefaultExec{ + RawExec: &invoke.RawExec{Stderr: os.Stderr}, + PluginDecoder: version.PluginDecoder{}, } + } + return c.exec +} - newConf, err := buildOneConfig(list, net, prevResult, rt) - if err != nil { - return nil, err - } +func (c *CNIConfig) addOrGetNetwork(command, name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) (types.Result, error) { + c.ensureExec() + pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path) + if err != nil { + return nil, err + } - prevResult, err = invoke.ExecPluginWithResult(pluginPath, newConf.Bytes, c.args("ADD", rt)) + newConf, err := buildOneConfig(name, cniVersion, net, prevResult, rt) + if err != nil { + return nil, err + } + + return invoke.ExecPluginWithResult(pluginPath, newConf.Bytes, c.args(command, rt), c.exec) +} + +// Note that only GET requests should pass an initial prevResult +func (c *CNIConfig) addOrGetNetworkList(command string, prevResult types.Result, list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) { + var err error + for _, net := range list.Plugins { + prevResult, err = c.addOrGetNetwork(command, list.Name, list.CNIVersion, net, prevResult, rt) if err != nil { return nil, err } @@ -142,68 +186,194 @@ func (c *CNIConfig) AddNetworkList(list *NetworkConfigList, rt *RuntimeConf) (ty return prevResult, nil } +func getResultCacheFilePath(netName string, rt *RuntimeConf) string { + cacheDir := rt.CacheDir + if cacheDir == "" { + cacheDir = CacheDir + } + return filepath.Join(cacheDir, "results", fmt.Sprintf("%s-%s", netName, rt.ContainerID)) +} + +func setCachedResult(result types.Result, netName string, rt *RuntimeConf) error { + data, err := json.Marshal(result) + if err != nil { + return err + } + fname := getResultCacheFilePath(netName, rt) + if err := os.MkdirAll(filepath.Dir(fname), 0700); err != nil { + return err + } + return ioutil.WriteFile(fname, data, 0600) +} + +func delCachedResult(netName string, rt *RuntimeConf) error { + fname := getResultCacheFilePath(netName, rt) + return os.Remove(fname) +} + +func getCachedResult(netName, cniVersion string, rt *RuntimeConf) (types.Result, error) { + fname := getResultCacheFilePath(netName, rt) + data, err := ioutil.ReadFile(fname) + if err != nil { + // Ignore read errors; the cached result may not exist on-disk + return nil, nil + } + + // Read the version of the cached result + decoder := version.ConfigDecoder{} + resultCniVersion, err := decoder.Decode(data) + if err != nil { + return nil, err + } + + // Ensure we can understand the result + result, err := version.NewResult(resultCniVersion, data) + if err != nil { + return nil, err + } + + // Convert to the config version to ensure plugins get prevResult + // in the same version as the config. The cached result version + // should match the config version unless the config was changed + // while the container was running. + result, err = result.GetAsVersion(cniVersion) + if err != nil && resultCniVersion != cniVersion { + return nil, fmt.Errorf("failed to convert cached result version %q to config version %q: %v", resultCniVersion, cniVersion, err) + } + return result, err +} + +// AddNetworkList executes a sequence of plugins with the ADD command +func (c *CNIConfig) AddNetworkList(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) { + result, err := c.addOrGetNetworkList("ADD", nil, list, rt) + if err != nil { + return nil, err + } + + if err = setCachedResult(result, list.Name, rt); err != nil { + return nil, fmt.Errorf("failed to set network '%s' cached result: %v", list.Name, err) + } + + return result, nil +} + +// GetNetworkList executes a sequence of plugins with the GET command +func (c *CNIConfig) GetNetworkList(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) { + // GET was added in CNI spec version 0.4.0 and higher + if gtet, err := version.GreaterThanOrEqualTo(list.CNIVersion, "0.4.0"); err != nil { + return nil, err + } else if !gtet { + return nil, fmt.Errorf("configuration version %q does not support the GET command", list.CNIVersion) + } + + cachedResult, err := getCachedResult(list.Name, list.CNIVersion, rt) + if err != nil { + return nil, fmt.Errorf("failed to get network '%s' cached result: %v", list.Name, err) + } + return c.addOrGetNetworkList("GET", cachedResult, list, rt) +} + +func (c *CNIConfig) delNetwork(name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) error { + c.ensureExec() + pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path) + if err != nil { + return err + } + + newConf, err := buildOneConfig(name, cniVersion, net, prevResult, rt) + if err != nil { + return err + } + + return invoke.ExecPluginWithoutResult(pluginPath, newConf.Bytes, c.args("DEL", rt), c.exec) +} + // DelNetworkList executes a sequence of plugins with the DEL command func (c *CNIConfig) DelNetworkList(list *NetworkConfigList, rt *RuntimeConf) error { - for i := len(list.Plugins) - 1; i >= 0; i-- { - net := list.Plugins[i] - - pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path) - if err != nil { - return err - } + var cachedResult types.Result - newConf, err := buildOneConfig(list, net, nil, rt) + // Cached result on DEL was added in CNI spec version 0.4.0 and higher + if gtet, err := version.GreaterThanOrEqualTo(list.CNIVersion, "0.4.0"); err != nil { + return err + } else if gtet { + cachedResult, err = getCachedResult(list.Name, list.CNIVersion, rt) if err != nil { - return err + return fmt.Errorf("failed to get network '%s' cached result: %v", list.Name, err) } + } - if err := invoke.ExecPluginWithoutResult(pluginPath, newConf.Bytes, c.args("DEL", rt)); err != nil { + for i := len(list.Plugins) - 1; i >= 0; i-- { + net := list.Plugins[i] + if err := c.delNetwork(list.Name, list.CNIVersion, net, cachedResult, rt); err != nil { return err } } + _ = delCachedResult(list.Name, rt) return nil } // AddNetwork executes the plugin with the ADD command func (c *CNIConfig) AddNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) { - pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path) + result, err := c.addOrGetNetwork("ADD", net.Network.Name, net.Network.CNIVersion, net, nil, rt) if err != nil { return nil, err } - net, err = injectRuntimeConfig(net, rt) - if err != nil { + if err = setCachedResult(result, net.Network.Name, rt); err != nil { + return nil, fmt.Errorf("failed to set network '%s' cached result: %v", net.Network.Name, err) + } + + return result, nil +} + +// GetNetwork executes the plugin with the GET command +func (c *CNIConfig) GetNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) { + // GET was added in CNI spec version 0.4.0 and higher + if gtet, err := version.GreaterThanOrEqualTo(net.Network.CNIVersion, "0.4.0"); err != nil { return nil, err + } else if !gtet { + return nil, fmt.Errorf("configuration version %q does not support the GET command", net.Network.CNIVersion) } - return invoke.ExecPluginWithResult(pluginPath, net.Bytes, c.args("ADD", rt)) + cachedResult, err := getCachedResult(net.Network.Name, net.Network.CNIVersion, rt) + if err != nil { + return nil, fmt.Errorf("failed to get network '%s' cached result: %v", net.Network.Name, err) + } + return c.addOrGetNetwork("GET", net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt) } // DelNetwork executes the plugin with the DEL command func (c *CNIConfig) DelNetwork(net *NetworkConfig, rt *RuntimeConf) error { - pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path) - if err != nil { + var cachedResult types.Result + + // Cached result on DEL was added in CNI spec version 0.4.0 and higher + if gtet, err := version.GreaterThanOrEqualTo(net.Network.CNIVersion, "0.4.0"); err != nil { return err + } else if gtet { + cachedResult, err = getCachedResult(net.Network.Name, net.Network.CNIVersion, rt) + if err != nil { + return fmt.Errorf("failed to get network '%s' cached result: %v", net.Network.Name, err) + } } - net, err = injectRuntimeConfig(net, rt) - if err != nil { + if err := c.delNetwork(net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt); err != nil { return err } - - return invoke.ExecPluginWithoutResult(pluginPath, net.Bytes, c.args("DEL", rt)) + _ = delCachedResult(net.Network.Name, rt) + return nil } // GetVersionInfo reports which versions of the CNI spec are supported by // the given plugin. func (c *CNIConfig) GetVersionInfo(pluginType string) (version.PluginInfo, error) { - pluginPath, err := invoke.FindInPath(pluginType, c.Path) + c.ensureExec() + pluginPath, err := c.exec.FindInPath(pluginType, c.Path) if err != nil { return nil, err } - return invoke.GetVersionInfo(pluginPath) + return invoke.GetVersionInfo(pluginPath, c.exec) } // ===== diff --git a/vendor/github.com/containernetworking/cni/libcni/conf.go b/vendor/github.com/containernetworking/cni/libcni/conf.go index c7738c665..9834d715b 100644 --- a/vendor/github.com/containernetworking/cni/libcni/conf.go +++ b/vendor/github.com/containernetworking/cni/libcni/conf.go @@ -45,6 +45,9 @@ func ConfFromBytes(bytes []byte) (*NetworkConfig, error) { if err := json.Unmarshal(bytes, &conf.Network); err != nil { return nil, fmt.Errorf("error parsing configuration: %s", err) } + if conf.Network.Type == "" { + return nil, fmt.Errorf("error parsing configuration: missing 'type'") + } return conf, nil } diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go b/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go index c78a69eeb..21efdf802 100644 --- a/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go +++ b/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go @@ -22,32 +22,54 @@ import ( "github.com/containernetworking/cni/pkg/types" ) -func DelegateAdd(delegatePlugin string, netconf []byte) (types.Result, error) { - if os.Getenv("CNI_COMMAND") != "ADD" { - return nil, fmt.Errorf("CNI_COMMAND is not ADD") +func delegateAddOrGet(command, delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) { + if exec == nil { + exec = defaultExec } paths := filepath.SplitList(os.Getenv("CNI_PATH")) - - pluginPath, err := FindInPath(delegatePlugin, paths) + pluginPath, err := exec.FindInPath(delegatePlugin, paths) if err != nil { return nil, err } - return ExecPluginWithResult(pluginPath, netconf, ArgsFromEnv()) + return ExecPluginWithResult(pluginPath, netconf, ArgsFromEnv(), exec) +} + +// DelegateAdd calls the given delegate plugin with the CNI ADD action and +// JSON configuration +func DelegateAdd(delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) { + if os.Getenv("CNI_COMMAND") != "ADD" { + return nil, fmt.Errorf("CNI_COMMAND is not ADD") + } + return delegateAddOrGet("ADD", delegatePlugin, netconf, exec) +} + +// DelegateGet calls the given delegate plugin with the CNI GET action and +// JSON configuration +func DelegateGet(delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) { + if os.Getenv("CNI_COMMAND") != "GET" { + return nil, fmt.Errorf("CNI_COMMAND is not GET") + } + return delegateAddOrGet("GET", delegatePlugin, netconf, exec) } -func DelegateDel(delegatePlugin string, netconf []byte) error { +// DelegateDel calls the given delegate plugin with the CNI DEL action and +// JSON configuration +func DelegateDel(delegatePlugin string, netconf []byte, exec Exec) error { + if exec == nil { + exec = defaultExec + } + if os.Getenv("CNI_COMMAND") != "DEL" { return fmt.Errorf("CNI_COMMAND is not DEL") } paths := filepath.SplitList(os.Getenv("CNI_PATH")) - - pluginPath, err := FindInPath(delegatePlugin, paths) + pluginPath, err := exec.FindInPath(delegatePlugin, paths) if err != nil { return err } - return ExecPluginWithoutResult(pluginPath, netconf, ArgsFromEnv()) + return ExecPluginWithoutResult(pluginPath, netconf, ArgsFromEnv(), exec) } diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go b/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go index fc47e7c82..cf019d3a0 100644 --- a/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go +++ b/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go @@ -22,34 +22,62 @@ import ( "github.com/containernetworking/cni/pkg/version" ) -func ExecPluginWithResult(pluginPath string, netconf []byte, args CNIArgs) (types.Result, error) { - return defaultPluginExec.WithResult(pluginPath, netconf, args) +// Exec is an interface encapsulates all operations that deal with finding +// and executing a CNI plugin. Tests may provide a fake implementation +// to avoid writing fake plugins to temporary directories during the test. +type Exec interface { + ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error) + FindInPath(plugin string, paths []string) (string, error) + Decode(jsonBytes []byte) (version.PluginInfo, error) } -func ExecPluginWithoutResult(pluginPath string, netconf []byte, args CNIArgs) error { - return defaultPluginExec.WithoutResult(pluginPath, netconf, args) -} - -func GetVersionInfo(pluginPath string) (version.PluginInfo, error) { - return defaultPluginExec.GetVersionInfo(pluginPath) -} - -var defaultPluginExec = &PluginExec{ - RawExec: &RawExec{Stderr: os.Stderr}, - VersionDecoder: &version.PluginDecoder{}, -} +// For example, a testcase could pass an instance of the following fakeExec +// object to ExecPluginWithResult() to verify the incoming stdin and environment +// and provide a tailored response: +// +//import ( +// "encoding/json" +// "path" +// "strings" +//) +// +//type fakeExec struct { +// version.PluginDecoder +//} +// +//func (f *fakeExec) ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error) { +// net := &types.NetConf{} +// err := json.Unmarshal(stdinData, net) +// if err != nil { +// return nil, fmt.Errorf("failed to unmarshal configuration: %v", err) +// } +// pluginName := path.Base(pluginPath) +// if pluginName != net.Type { +// return nil, fmt.Errorf("plugin name %q did not match config type %q", pluginName, net.Type) +// } +// for _, e := range environ { +// // Check environment for forced failure request +// parts := strings.Split(e, "=") +// if len(parts) > 0 && parts[0] == "FAIL" { +// return nil, fmt.Errorf("failed to execute plugin %s", pluginName) +// } +// } +// return []byte("{\"CNIVersion\":\"0.4.0\"}"), nil +//} +// +//func (f *fakeExec) FindInPath(plugin string, paths []string) (string, error) { +// if len(paths) > 0 { +// return path.Join(paths[0], plugin), nil +// } +// return "", fmt.Errorf("failed to find plugin %s in paths %v", plugin, paths) +//} -type PluginExec struct { - RawExec interface { - ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error) +func ExecPluginWithResult(pluginPath string, netconf []byte, args CNIArgs, exec Exec) (types.Result, error) { + if exec == nil { + exec = defaultExec } - VersionDecoder interface { - Decode(jsonBytes []byte) (version.PluginInfo, error) - } -} -func (e *PluginExec) WithResult(pluginPath string, netconf []byte, args CNIArgs) (types.Result, error) { - stdoutBytes, err := e.RawExec.ExecPlugin(pluginPath, netconf, args.AsEnv()) + stdoutBytes, err := exec.ExecPlugin(pluginPath, netconf, args.AsEnv()) if err != nil { return nil, err } @@ -64,8 +92,11 @@ func (e *PluginExec) WithResult(pluginPath string, netconf []byte, args CNIArgs) return version.NewResult(confVersion, stdoutBytes) } -func (e *PluginExec) WithoutResult(pluginPath string, netconf []byte, args CNIArgs) error { - _, err := e.RawExec.ExecPlugin(pluginPath, netconf, args.AsEnv()) +func ExecPluginWithoutResult(pluginPath string, netconf []byte, args CNIArgs, exec Exec) error { + if exec == nil { + exec = defaultExec + } + _, err := exec.ExecPlugin(pluginPath, netconf, args.AsEnv()) return err } @@ -73,7 +104,10 @@ func (e *PluginExec) WithoutResult(pluginPath string, netconf []byte, args CNIAr // For recent-enough plugins, it uses the information returned by the VERSION // command. For older plugins which do not recognize that command, it reports // version 0.1.0 -func (e *PluginExec) GetVersionInfo(pluginPath string) (version.PluginInfo, error) { +func GetVersionInfo(pluginPath string, exec Exec) (version.PluginInfo, error) { + if exec == nil { + exec = defaultExec + } args := &Args{ Command: "VERSION", @@ -83,7 +117,7 @@ func (e *PluginExec) GetVersionInfo(pluginPath string) (version.PluginInfo, erro Path: "dummy", } stdin := []byte(fmt.Sprintf(`{"cniVersion":%q}`, version.Current())) - stdoutBytes, err := e.RawExec.ExecPlugin(pluginPath, stdin, args.AsEnv()) + stdoutBytes, err := exec.ExecPlugin(pluginPath, stdin, args.AsEnv()) if err != nil { if err.Error() == "unknown CNI_COMMAND: VERSION" { return version.PluginSupports("0.1.0"), nil @@ -91,5 +125,19 @@ func (e *PluginExec) GetVersionInfo(pluginPath string) (version.PluginInfo, erro return nil, err } - return e.VersionDecoder.Decode(stdoutBytes) + return exec.Decode(stdoutBytes) +} + +// DefaultExec is an object that implements the Exec interface which looks +// for and executes plugins from disk. +type DefaultExec struct { + *RawExec + version.PluginDecoder +} + +// DefaultExec implements the Exec interface +var _ Exec = &DefaultExec{} + +var defaultExec = &DefaultExec{ + RawExec: &RawExec{Stderr: os.Stderr}, } diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go b/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go index 93f1e75d9..a598f09c2 100644 --- a/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go +++ b/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go @@ -57,3 +57,7 @@ func pluginErr(err error, output []byte) error { return err } + +func (e *RawExec) FindInPath(plugin string, paths []string) (string, error) { + return FindInPath(plugin, paths) +} diff --git a/vendor/github.com/containernetworking/cni/pkg/types/current/types.go b/vendor/github.com/containernetworking/cni/pkg/types/current/types.go index caac92ba7..92980c1a7 100644 --- a/vendor/github.com/containernetworking/cni/pkg/types/current/types.go +++ b/vendor/github.com/containernetworking/cni/pkg/types/current/types.go @@ -24,9 +24,9 @@ import ( "github.com/containernetworking/cni/pkg/types/020" ) -const ImplementedSpecVersion string = "0.3.1" +const ImplementedSpecVersion string = "0.4.0" -var SupportedVersions = []string{"0.3.0", ImplementedSpecVersion} +var SupportedVersions = []string{"0.3.0", "0.3.1", ImplementedSpecVersion} func NewResult(data []byte) (types.Result, error) { result := &Result{} @@ -196,7 +196,7 @@ func (r *Result) Version() string { func (r *Result) GetAsVersion(version string) (types.Result, error) { switch version { - case "0.3.0", ImplementedSpecVersion: + case "0.3.0", "0.3.1", ImplementedSpecVersion: r.CNIVersion = version return r, nil case types020.SupportedVersions[0], types020.SupportedVersions[1], types020.SupportedVersions[2]: diff --git a/vendor/github.com/containernetworking/cni/pkg/types/types.go b/vendor/github.com/containernetworking/cni/pkg/types/types.go index 641275600..4684a3207 100644 --- a/vendor/github.com/containernetworking/cni/pkg/types/types.go +++ b/vendor/github.com/containernetworking/cni/pkg/types/types.go @@ -63,10 +63,12 @@ type NetConf struct { Name string `json:"name,omitempty"` Type string `json:"type,omitempty"` Capabilities map[string]bool `json:"capabilities,omitempty"` - IPAM struct { - Type string `json:"type,omitempty"` - } `json:"ipam,omitempty"` - DNS DNS `json:"dns"` + IPAM IPAM `json:"ipam,omitempty"` + DNS DNS `json:"dns"` +} + +type IPAM struct { + Type string `json:"type,omitempty"` } // NetConfList describes an ordered list of networks. @@ -167,7 +169,7 @@ func (r *Route) UnmarshalJSON(data []byte) error { return nil } -func (r *Route) MarshalJSON() ([]byte, error) { +func (r Route) MarshalJSON() ([]byte, error) { rt := route{ Dst: IPNet(r.Dst), GW: r.GW, diff --git a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go b/vendor/github.com/containernetworking/cni/pkg/version/plugin.go index 8a4672810..612335a81 100644 --- a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go +++ b/vendor/github.com/containernetworking/cni/pkg/version/plugin.go @@ -18,6 +18,8 @@ import ( "encoding/json" "fmt" "io" + "strconv" + "strings" ) // PluginInfo reports information about CNI versioning @@ -79,3 +81,60 @@ func (*PluginDecoder) Decode(jsonBytes []byte) (PluginInfo, error) { } return &info, nil } + +// ParseVersion parses a version string like "3.0.1" or "0.4.5" into major, +// minor, and micro numbers or returns an error +func ParseVersion(version string) (int, int, int, error) { + var major, minor, micro int + parts := strings.Split(version, ".") + if len(parts) == 0 || len(parts) >= 4 { + return -1, -1, -1, fmt.Errorf("invalid version %q: too many or too few parts", version) + } + + major, err := strconv.Atoi(parts[0]) + if err != nil { + return -1, -1, -1, fmt.Errorf("failed to convert major version part %q: %v", parts[0], err) + } + + if len(parts) >= 2 { + minor, err = strconv.Atoi(parts[1]) + if err != nil { + return -1, -1, -1, fmt.Errorf("failed to convert minor version part %q: %v", parts[1], err) + } + } + + if len(parts) >= 3 { + micro, err = strconv.Atoi(parts[2]) + if err != nil { + return -1, -1, -1, fmt.Errorf("failed to convert micro version part %q: %v", parts[2], err) + } + } + + return major, minor, micro, nil +} + +// GreaterThanOrEqualTo takes two string versions, parses them into major/minor/micro +// nubmers, and compares them to determine whether the first version is greater +// than or equal to the second +func GreaterThanOrEqualTo(version, otherVersion string) (bool, error) { + firstMajor, firstMinor, firstMicro, err := ParseVersion(version) + if err != nil { + return false, err + } + + secondMajor, secondMinor, secondMicro, err := ParseVersion(otherVersion) + if err != nil { + return false, err + } + + if firstMajor > secondMajor { + return true, nil + } else if firstMajor == secondMajor { + if firstMinor > secondMinor { + return true, nil + } else if firstMinor == secondMinor && firstMicro >= secondMicro { + return true, nil + } + } + return false, nil +} diff --git a/vendor/github.com/containernetworking/cni/pkg/version/version.go b/vendor/github.com/containernetworking/cni/pkg/version/version.go index efe8ea871..c8e46d55b 100644 --- a/vendor/github.com/containernetworking/cni/pkg/version/version.go +++ b/vendor/github.com/containernetworking/cni/pkg/version/version.go @@ -24,7 +24,7 @@ import ( // Current reports the version of the CNI spec implemented by this library func Current() string { - return "0.3.1" + return "0.4.0" } // Legacy PluginInfo describes a plugin that is backwards compatible with the @@ -35,7 +35,7 @@ func Current() string { // Any future CNI spec versions which meet this definition should be added to // this list. var Legacy = PluginSupports("0.1.0", "0.2.0") -var All = PluginSupports("0.1.0", "0.2.0", "0.3.0", "0.3.1") +var All = PluginSupports("0.1.0", "0.2.0", "0.3.0", "0.3.1", "0.4.0") var resultFactories = []struct { supportedVersions []string diff --git a/vendor/github.com/containers/storage/pkg/archive/example_changes.go b/vendor/github.com/containers/storage/pkg/archive/example_changes.go deleted file mode 100644 index 70f9c5564..000000000 --- a/vendor/github.com/containers/storage/pkg/archive/example_changes.go +++ /dev/null @@ -1,97 +0,0 @@ -// +build ignore - -// Simple tool to create an archive stream from an old and new directory -// -// By default it will stream the comparison of two temporary directories with junk files -package main - -import ( - "flag" - "fmt" - "io" - "io/ioutil" - "os" - "path" - - "github.com/containers/storage/pkg/archive" - "github.com/sirupsen/logrus" -) - -var ( - flDebug = flag.Bool("D", false, "debugging output") - flNewDir = flag.String("newdir", "", "") - flOldDir = flag.String("olddir", "", "") - log = logrus.New() -) - -func main() { - flag.Usage = func() { - fmt.Println("Produce a tar from comparing two directory paths. By default a demo tar is created of around 200 files (including hardlinks)") - fmt.Printf("%s [OPTIONS]\n", os.Args[0]) - flag.PrintDefaults() - } - flag.Parse() - log.Out = os.Stderr - if (len(os.Getenv("DEBUG")) > 0) || *flDebug { - logrus.SetLevel(logrus.DebugLevel) - } - var newDir, oldDir string - - if len(*flNewDir) == 0 { - var err error - newDir, err = ioutil.TempDir("", "storage-test-newDir") - if err != nil { - log.Fatal(err) - } - defer os.RemoveAll(newDir) - if _, err := prepareUntarSourceDirectory(100, newDir, true); err != nil { - log.Fatal(err) - } - } else { - newDir = *flNewDir - } - - if len(*flOldDir) == 0 { - oldDir, err := ioutil.TempDir("", "storage-test-oldDir") - if err != nil { - log.Fatal(err) - } - defer os.RemoveAll(oldDir) - } else { - oldDir = *flOldDir - } - - changes, err := archive.ChangesDirs(newDir, oldDir) - if err != nil { - log.Fatal(err) - } - - a, err := archive.ExportChanges(newDir, changes) - if err != nil { - log.Fatal(err) - } - defer a.Close() - - i, err := io.Copy(os.Stdout, a) - if err != nil && err != io.EOF { - log.Fatal(err) - } - fmt.Fprintf(os.Stderr, "wrote archive of %d bytes", i) -} - -func prepareUntarSourceDirectory(numberOfFiles int, targetPath string, makeLinks bool) (int, error) { - fileData := []byte("fooo") - for n := 0; n < numberOfFiles; n++ { - fileName := fmt.Sprintf("file-%d", n) - if err := ioutil.WriteFile(path.Join(targetPath, fileName), fileData, 0700); err != nil { - return 0, err - } - if makeLinks { - if err := os.Link(path.Join(targetPath, fileName), path.Join(targetPath, fileName+"-link")); err != nil { - return 0, err - } - } - } - totalSize := numberOfFiles * len(fileData) - return totalSize, nil -} diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go index e49c1dc84..33a3ae063 100644 --- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go @@ -4,13 +4,16 @@ import ( "errors" "fmt" "os" - "os/exec" + "path" "sort" "strings" "sync" "github.com/containernetworking/cni/libcni" + cniinvoke "github.com/containernetworking/cni/pkg/invoke" cnitypes "github.com/containernetworking/cni/pkg/types" + cnicurrent "github.com/containernetworking/cni/pkg/types/current" + cniversion "github.com/containernetworking/cni/pkg/version" "github.com/fsnotify/fsnotify" "github.com/sirupsen/logrus" ) @@ -19,14 +22,16 @@ type cniNetworkPlugin struct { loNetwork *cniNetwork sync.RWMutex - defaultNetwork *cniNetwork + defaultNetName string + networks map[string]*cniNetwork - nsenterPath string - pluginDir string - cniDirs []string - vendorCNIDirPrefix string + nsManager *nsManager + confDir string + binDirs []string - monitorNetDirChan chan struct{} + shutdownChan chan struct{} + watcher *fsnotify.Watcher + done *sync.WaitGroup // The pod map provides synchronization for a given pod's network // operations. Each pod's setup/teardown/status operations @@ -34,12 +39,17 @@ type cniNetworkPlugin struct { // pods can proceed in parallel. podsLock sync.Mutex pods map[string]*podLock + + // For testcases + exec cniinvoke.Exec + cacheDir string } type cniNetwork struct { name string + filePath string NetworkConfig *libcni.NetworkConfigList - CNIConfig libcni.CNI + CNIConfig *libcni.CNIConfig } var errMissingDefaultNetwork = errors.New("Missing CNI default network") @@ -99,110 +109,150 @@ func (plugin *cniNetworkPlugin) podUnlock(podNetwork PodNetwork) { } } -func (plugin *cniNetworkPlugin) monitorNetDir() { +func newWatcher(confDir string) (*fsnotify.Watcher, error) { + // Ensure plugin directory exists, because the following monitoring logic + // relies on that. + if err := os.MkdirAll(confDir, 0755); err != nil { + return nil, fmt.Errorf("failed to create %q: %v", confDir, err) + } + watcher, err := fsnotify.NewWatcher() if err != nil { - logrus.Errorf("could not create new watcher %v", err) - return + return nil, fmt.Errorf("could not create new watcher %v", err) } - defer watcher.Close() + defer func() { + // Close watcher on error + if err != nil { + watcher.Close() + } + }() - if err = watcher.Add(plugin.pluginDir); err != nil { - logrus.Errorf("Failed to add watch on %q: %v", plugin.pluginDir, err) - return + if err = watcher.Add(confDir); err != nil { + return nil, fmt.Errorf("failed to add watch on %q: %v", confDir, err) } - // Now that `watcher` is running and watching the `pluginDir` - // gather the initial configuration, before starting the - // goroutine which will actually process events. It has to be - // done in this order to avoid missing any updates which might - // otherwise occur between gathering the initial configuration - // and starting the watcher. - if err := plugin.syncNetworkConfig(); err != nil { - logrus.Infof("Initial CNI setting failed, continue monitoring: %v", err) - } else { - logrus.Infof("Initial CNI setting succeeded") - } - - go func() { - for { - select { - case event := <-watcher.Events: - logrus.Debugf("CNI monitoring event %v", event) - if event.Op&fsnotify.Create != fsnotify.Create && - event.Op&fsnotify.Write != fsnotify.Write { - continue - } + return watcher, nil +} - if err = plugin.syncNetworkConfig(); err == nil { - logrus.Infof("CNI asynchronous setting succeeded") - continue +func (plugin *cniNetworkPlugin) monitorConfDir(start *sync.WaitGroup) { + start.Done() + plugin.done.Add(1) + defer plugin.done.Done() + for { + select { + case event := <-plugin.watcher.Events: + logrus.Warningf("CNI monitoring event %v", event) + + var defaultDeleted bool + createWrite := (event.Op&fsnotify.Create == fsnotify.Create || + event.Op&fsnotify.Write == fsnotify.Write) + if event.Op&fsnotify.Remove == fsnotify.Remove { + // Care about the event if the default network + // was just deleted + defNet := plugin.getDefaultNetwork() + if defNet != nil && event.Name == defNet.filePath { + defaultDeleted = true } - logrus.Errorf("CNI setting failed, continue monitoring: %v", err) + } + if !createWrite && !defaultDeleted { + continue + } - case err := <-watcher.Errors: - if err == nil { - continue - } - logrus.Errorf("CNI monitoring error %v", err) - close(plugin.monitorNetDirChan) - return + if err := plugin.syncNetworkConfig(); err != nil { + logrus.Errorf("CNI config loading failed, continue monitoring: %v", err) + continue } + + case err := <-plugin.watcher.Errors: + if err == nil { + continue + } + logrus.Errorf("CNI monitoring error %v", err) + return + + case <-plugin.shutdownChan: + return } - }() + } +} - <-plugin.monitorNetDirChan +// InitCNI takes a binary directory in which to search for CNI plugins, and +// a configuration directory in which to search for CNI JSON config files. +// If no valid CNI configs exist, network requests will fail until valid CNI +// config files are present in the config directory. +// If defaultNetName is not empty, a CNI config with that network name will +// be used as the default CNI network, and container network operations will +// fail until that network config is present and valid. +func InitCNI(defaultNetName string, confDir string, binDirs ...string) (CNIPlugin, error) { + return initCNI(nil, "", defaultNetName, confDir, binDirs...) } -// InitCNI takes the plugin directory and CNI directories where the CNI config -// files should be searched for. If no valid CNI configs exist, network requests -// will fail until valid CNI config files are present in the config directory. -func InitCNI(pluginDir string, cniDirs ...string) (CNIPlugin, error) { - vendorCNIDirPrefix := "" +// Internal function to allow faking out exec functions for testing +func initCNI(exec cniinvoke.Exec, cacheDir, defaultNetName string, confDir string, binDirs ...string) (CNIPlugin, error) { + if confDir == "" { + confDir = DefaultConfDir + } + if len(binDirs) == 0 { + binDirs = []string{DefaultBinDir} + } plugin := &cniNetworkPlugin{ - defaultNetwork: nil, - loNetwork: getLoNetwork(cniDirs, vendorCNIDirPrefix), - pluginDir: pluginDir, - cniDirs: cniDirs, - vendorCNIDirPrefix: vendorCNIDirPrefix, - monitorNetDirChan: make(chan struct{}), - pods: make(map[string]*podLock), + defaultNetName: defaultNetName, + networks: make(map[string]*cniNetwork), + loNetwork: getLoNetwork(exec, binDirs), + confDir: confDir, + binDirs: binDirs, + shutdownChan: make(chan struct{}), + done: &sync.WaitGroup{}, + pods: make(map[string]*podLock), + exec: exec, + cacheDir: cacheDir, + } + + if exec == nil { + exec = &cniinvoke.DefaultExec{ + RawExec: &cniinvoke.RawExec{Stderr: os.Stderr}, + PluginDecoder: cniversion.PluginDecoder{}, + } } - var err error - plugin.nsenterPath, err = exec.LookPath("nsenter") + nsm, err := newNSManager() if err != nil { return nil, err } + plugin.nsManager = nsm - // Ensure plugin directory exists, because the following monitoring logic - // relies on that. - if err := os.MkdirAll(pluginDir, 0755); err != nil { + plugin.syncNetworkConfig() + + plugin.watcher, err = newWatcher(plugin.confDir) + if err != nil { return nil, err } - go plugin.monitorNetDir() + startWg := sync.WaitGroup{} + startWg.Add(1) + go plugin.monitorConfDir(&startWg) + startWg.Wait() return plugin, nil } -func getDefaultCNINetwork(pluginDir string, cniDirs []string, vendorCNIDirPrefix string) (*cniNetwork, error) { - if pluginDir == "" { - pluginDir = DefaultNetDir - } - if len(cniDirs) == 0 { - cniDirs = []string{DefaultCNIDir} - } +func (plugin *cniNetworkPlugin) Shutdown() error { + close(plugin.shutdownChan) + plugin.watcher.Close() + plugin.done.Wait() + return nil +} - files, err := libcni.ConfFiles(pluginDir, []string{".conf", ".conflist", ".json"}) - switch { - case err != nil: - return nil, err - case len(files) == 0: - return nil, errMissingDefaultNetwork +func loadNetworks(exec cniinvoke.Exec, confDir string, binDirs []string) (map[string]*cniNetwork, string, error) { + files, err := libcni.ConfFiles(confDir, []string{".conf", ".conflist", ".json"}) + if err != nil { + return nil, "", err } + networks := make(map[string]*cniNetwork) + defaultNetName := "" + sort.Strings(files) for _, confFile := range files { var confList *libcni.NetworkConfigList @@ -232,27 +282,28 @@ func getDefaultCNINetwork(pluginDir string, cniDirs []string, vendorCNIDirPrefix logrus.Warningf("CNI config list %s has no networks, skipping", confFile) continue } - logrus.Infof("CNI network %s (type=%v) is used from %s", confList.Name, confList.Plugins[0].Network.Type, confFile) - // Search for vendor-specific plugins as well as default plugins in the CNI codebase. - vendorDir := vendorCNIDir(vendorCNIDirPrefix, confList.Plugins[0].Network.Type) - cninet := &libcni.CNIConfig{ - Path: append(cniDirs, vendorDir), + if confList.Name == "" { + confList.Name = path.Base(confFile) } - network := &cniNetwork{name: confList.Name, NetworkConfig: confList, CNIConfig: cninet} - return network, nil - } - return nil, fmt.Errorf("No valid networks found in %s", pluginDir) -} -func vendorCNIDir(prefix, pluginType string) string { - return fmt.Sprintf(VendorCNIDirTemplate, prefix, pluginType) -} + logrus.Infof("Found CNI network %s (type=%v) at %s", confList.Name, confList.Plugins[0].Network.Type, confFile) + + networks[confList.Name] = &cniNetwork{ + name: confList.Name, + filePath: confFile, + NetworkConfig: confList, + CNIConfig: libcni.NewCNIConfig(binDirs, exec), + } -func getLoNetwork(cniDirs []string, vendorDirPrefix string) *cniNetwork { - if len(cniDirs) == 0 { - cniDirs = []string{DefaultCNIDir} + if defaultNetName == "" { + defaultNetName = confList.Name + } } + return networks, defaultNetName, nil +} + +func getLoNetwork(exec cniinvoke.Exec, binDirs []string) *cniNetwork { loConfig, err := libcni.ConfListFromBytes([]byte(`{ "cniVersion": "0.2.0", "name": "cni-loopback", @@ -265,45 +316,62 @@ func getLoNetwork(cniDirs []string, vendorDirPrefix string) *cniNetwork { // catch this panic(err) } - vendorDir := vendorCNIDir(vendorDirPrefix, loConfig.Plugins[0].Network.Type) - cninet := &libcni.CNIConfig{ - Path: append(cniDirs, vendorDir), - } loNetwork := &cniNetwork{ name: "lo", NetworkConfig: loConfig, - CNIConfig: cninet, + CNIConfig: libcni.NewCNIConfig(binDirs, exec), } return loNetwork } func (plugin *cniNetworkPlugin) syncNetworkConfig() error { - network, err := getDefaultCNINetwork(plugin.pluginDir, plugin.cniDirs, plugin.vendorCNIDirPrefix) + networks, defaultNetName, err := loadNetworks(plugin.exec, plugin.confDir, plugin.binDirs) if err != nil { - logrus.Errorf("error updating cni config: %s", err) return err } - plugin.setDefaultNetwork(network) + + plugin.Lock() + defer plugin.Unlock() + if plugin.defaultNetName == "" { + plugin.defaultNetName = defaultNetName + } + plugin.networks = networks return nil } -func (plugin *cniNetworkPlugin) getDefaultNetwork() *cniNetwork { +func (plugin *cniNetworkPlugin) getNetwork(name string) (*cniNetwork, error) { plugin.RLock() defer plugin.RUnlock() - return plugin.defaultNetwork + net, ok := plugin.networks[name] + if !ok { + return nil, fmt.Errorf("CNI network %q not found", name) + } + return net, nil } -func (plugin *cniNetworkPlugin) setDefaultNetwork(n *cniNetwork) { - plugin.Lock() - defer plugin.Unlock() - plugin.defaultNetwork = n +func (plugin *cniNetworkPlugin) getDefaultNetworkName() string { + plugin.RLock() + defer plugin.RUnlock() + return plugin.defaultNetName } -func (plugin *cniNetworkPlugin) checkInitialized() error { - if plugin.getDefaultNetwork() == nil { - return errors.New("cni config uninitialized") +func (plugin *cniNetworkPlugin) getDefaultNetwork() *cniNetwork { + defaultNetName := plugin.getDefaultNetworkName() + if defaultNetName == "" { + return nil + } + network, _ := plugin.getNetwork(defaultNetName) + return network +} + +// networksAvailable returns an error if the pod requests no networks and the +// plugin has no default network, and thus the plugin has no idea what network +// to attach the pod to. +func (plugin *cniNetworkPlugin) networksAvailable(podNetwork *PodNetwork) error { + if len(podNetwork.Networks) == 0 && plugin.getDefaultNetwork() == nil { + return errMissingDefaultNetwork } return nil } @@ -312,59 +380,119 @@ func (plugin *cniNetworkPlugin) Name() string { return CNIPluginName } -func (plugin *cniNetworkPlugin) SetUpPod(podNetwork PodNetwork) (cnitypes.Result, error) { - if err := plugin.checkInitialized(); err != nil { +func (plugin *cniNetworkPlugin) forEachNetwork(podNetwork *PodNetwork, forEachFunc func(*cniNetwork, string, *PodNetwork) error) error { + networks := podNetwork.Networks + if len(networks) == 0 { + networks = append(networks, plugin.getDefaultNetworkName()) + } + for i, netName := range networks { + // Interface names start at "eth0" and count up for each network + ifName := fmt.Sprintf("eth%d", i) + network, err := plugin.getNetwork(netName) + if err != nil { + logrus.Errorf(err.Error()) + return err + } + if err := forEachFunc(network, ifName, podNetwork); err != nil { + return err + } + } + return nil +} + +func (plugin *cniNetworkPlugin) SetUpPod(podNetwork PodNetwork) ([]cnitypes.Result, error) { + if err := plugin.networksAvailable(&podNetwork); err != nil { return nil, err } plugin.podLock(podNetwork).Lock() defer plugin.podUnlock(podNetwork) - _, err := plugin.loNetwork.addToNetwork(podNetwork) + _, err := plugin.loNetwork.addToNetwork(plugin.cacheDir, &podNetwork, "lo") if err != nil { logrus.Errorf("Error while adding to cni lo network: %s", err) return nil, err } - result, err := plugin.getDefaultNetwork().addToNetwork(podNetwork) - if err != nil { - logrus.Errorf("Error while adding to cni network: %s", err) + results := make([]cnitypes.Result, 0) + if err := plugin.forEachNetwork(&podNetwork, func(network *cniNetwork, ifName string, podNetwork *PodNetwork) error { + result, err := network.addToNetwork(plugin.cacheDir, podNetwork, ifName) + if err != nil { + logrus.Errorf("Error while adding pod to CNI network %q: %s", network.name, err) + return err + } + results = append(results, result) + return nil + }); err != nil { return nil, err } - return result, err + return results, nil } func (plugin *cniNetworkPlugin) TearDownPod(podNetwork PodNetwork) error { - if err := plugin.checkInitialized(); err != nil { + if err := plugin.networksAvailable(&podNetwork); err != nil { return err } plugin.podLock(podNetwork).Lock() defer plugin.podUnlock(podNetwork) - return plugin.getDefaultNetwork().deleteFromNetwork(podNetwork) + return plugin.forEachNetwork(&podNetwork, func(network *cniNetwork, ifName string, podNetwork *PodNetwork) error { + if err := network.deleteFromNetwork(plugin.cacheDir, podNetwork, ifName); err != nil { + logrus.Errorf("Error while removing pod from CNI network %q: %s", network.name, err) + return err + } + return nil + }) } -// TODO: Use the addToNetwork function to obtain the IP of the Pod. That will assume idempotent ADD call to the plugin. -// Also fix the runtime's call to Status function to be done only in the case that the IP is lost, no need to do periodic calls -func (plugin *cniNetworkPlugin) GetPodNetworkStatus(podNetwork PodNetwork) (string, error) { +// GetPodNetworkStatus returns IP addressing and interface details for all +// networks attached to the pod. +func (plugin *cniNetworkPlugin) GetPodNetworkStatus(podNetwork PodNetwork) ([]cnitypes.Result, error) { plugin.podLock(podNetwork).Lock() defer plugin.podUnlock(podNetwork) - ip, err := getContainerIP(plugin.nsenterPath, podNetwork.NetNS, DefaultInterfaceName, "-4") - if err != nil { - ip, err = getContainerIP(plugin.nsenterPath, podNetwork.NetNS, DefaultInterfaceName, "-6") - } - if err != nil { - return "", err + results := make([]cnitypes.Result, 0) + if err := plugin.forEachNetwork(&podNetwork, func(network *cniNetwork, ifName string, podNetwork *PodNetwork) error { + version := "4" + ip, mac, err := getContainerDetails(plugin.nsManager, podNetwork.NetNS, ifName, "-4") + if err != nil { + ip, mac, err = getContainerDetails(plugin.nsManager, podNetwork.NetNS, ifName, "-6") + if err != nil { + return err + } + version = "6" + } + + // Until CNI's GET request lands, construct the Result manually + results = append(results, &cnicurrent.Result{ + CNIVersion: "0.3.1", + Interfaces: []*cnicurrent.Interface{ + { + Name: ifName, + Mac: mac.String(), + Sandbox: podNetwork.NetNS, + }, + }, + IPs: []*cnicurrent.IPConfig{ + { + Version: version, + Interface: cnicurrent.Int(0), + Address: *ip, + }, + }, + }) + return nil + }); err != nil { + return nil, err } - return ip.String(), nil + return results, nil } -func (network *cniNetwork) addToNetwork(podNetwork PodNetwork) (cnitypes.Result, error) { - rt, err := buildCNIRuntimeConf(podNetwork) +func (network *cniNetwork) addToNetwork(cacheDir string, podNetwork *PodNetwork, ifName string) (cnitypes.Result, error) { + rt, err := buildCNIRuntimeConf(cacheDir, podNetwork, ifName) if err != nil { logrus.Errorf("Error adding network: %v", err) return nil, err @@ -381,8 +509,8 @@ func (network *cniNetwork) addToNetwork(podNetwork PodNetwork) (cnitypes.Result, return res, nil } -func (network *cniNetwork) deleteFromNetwork(podNetwork PodNetwork) error { - rt, err := buildCNIRuntimeConf(podNetwork) +func (network *cniNetwork) deleteFromNetwork(cacheDir string, podNetwork *PodNetwork, ifName string) error { + rt, err := buildCNIRuntimeConf(cacheDir, podNetwork, ifName) if err != nil { logrus.Errorf("Error deleting network: %v", err) return err @@ -398,13 +526,14 @@ func (network *cniNetwork) deleteFromNetwork(podNetwork PodNetwork) error { return nil } -func buildCNIRuntimeConf(podNetwork PodNetwork) (*libcni.RuntimeConf, error) { +func buildCNIRuntimeConf(cacheDir string, podNetwork *PodNetwork, ifName string) (*libcni.RuntimeConf, error) { logrus.Infof("Got pod network %+v", podNetwork) rt := &libcni.RuntimeConf{ ContainerID: podNetwork.ID, NetNS: podNetwork.NetNS, - IfName: DefaultInterfaceName, + CacheDir: cacheDir, + IfName: ifName, Args: [][2]string{ {"IgnoreUnknown", "1"}, {"K8S_POD_NAMESPACE", podNetwork.Namespace}, @@ -424,5 +553,8 @@ func buildCNIRuntimeConf(podNetwork PodNetwork) (*libcni.RuntimeConf, error) { } func (plugin *cniNetworkPlugin) Status() error { - return plugin.checkInitialized() + if plugin.getDefaultNetwork() == nil { + return errMissingDefaultNetwork + } + return nil } diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types.go index 39e9b591c..8ca61657a 100644 --- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types.go +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types.go @@ -36,6 +36,10 @@ type PodNetwork struct { NetNS string // PortMappings is the port mapping of the sandbox. PortMappings []PortMapping + + // Networks is a list of CNI network names to attach to the sandbox + // Leave this list empty to attach the default network to the sandbox + Networks []string } // CNIPlugin is the interface that needs to be implemented by a plugin @@ -47,14 +51,17 @@ type CNIPlugin interface { // SetUpPod is the method called after the sandbox container of // the pod has been created but before the other containers of the // pod are launched. - SetUpPod(network PodNetwork) (types.Result, error) + SetUpPod(network PodNetwork) ([]types.Result, error) // TearDownPod is the method called before a pod's sandbox container will be deleted TearDownPod(network PodNetwork) error // Status is the method called to obtain the ipv4 or ipv6 addresses of the pod sandbox - GetPodNetworkStatus(network PodNetwork) (string, error) + GetPodNetworkStatus(network PodNetwork) ([]types.Result, error) // NetworkStatus returns error if the network plugin is in error state Status() error + + // Shutdown terminates all driver operations + Shutdown() error } diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_unix.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_unix.go index 21e713ffc..88010f737 100644 --- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_unix.go +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_unix.go @@ -3,10 +3,8 @@ package ocicni const ( - // DefaultNetDir is the place to look for CNI Network - DefaultNetDir = "/etc/cni/net.d" - // DefaultCNIDir is the place to look for cni config files - DefaultCNIDir = "/opt/cni/bin" - // VendorCNIDirTemplate is the template for looking up vendor specific cni config/executable files - VendorCNIDirTemplate = "%s/opt/%s/bin" + // DefaultConfDir is the default place to look for CNI Network + DefaultConfDir = "/etc/cni/net.d" + // DefaultBinDir is the default place to look for CNI config files + DefaultBinDir = "/opt/cni/bin" ) diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_windows.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_windows.go index f8b434c12..061ecae5c 100644 --- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_windows.go +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/types_windows.go @@ -3,10 +3,8 @@ package ocicni const ( - // DefaultNetDir is the place to look for CNI Network - DefaultNetDir = "C:\\cni\\etc\\net.d" - // DefaultCNIDir is the place to look for cni config files - DefaultCNIDir = "C:\\cni\\bin" - // VendorCNIDirTemplate is the template for looking up vendor specific cni config/executable files - VendorCNIDirTemplate = "C:\\cni\\%s\\opt\\%s\\bin" // XXX(vbatts) Not sure what to do here ... + // DefaultConfDir is the default place to look for CNI Network + DefaultConfDir = "C:\\cni\\etc\\net.d" + // DefaultBinDir is the default place to look for cni config files + DefaultBinDir = "C:\\cni\\bin" ) diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/util.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util.go index 547e95972..2af786593 100644 --- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/util.go +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util.go @@ -1,32 +1,8 @@ package ocicni -import ( - "fmt" - "net" - "os/exec" - "strings" -) - -func getContainerIP(nsenterPath, netnsPath, interfaceName, addrType string) (net.IP, error) { - // Try to retrieve ip inside container network namespace - output, err := exec.Command(nsenterPath, fmt.Sprintf("--net=%s", netnsPath), "-F", "--", - "ip", "-o", addrType, "addr", "show", "dev", interfaceName, "scope", "global").CombinedOutput() - if err != nil { - return nil, fmt.Errorf("Unexpected command output %s with error: %v", output, err) - } - - lines := strings.Split(string(output), "\n") - if len(lines) < 1 { - return nil, fmt.Errorf("Unexpected command output %s", output) - } - fields := strings.Fields(lines[0]) - if len(fields) < 4 { - return nil, fmt.Errorf("Unexpected address output %s ", lines[0]) - } - ip, _, err := net.ParseCIDR(fields[3]) - if err != nil { - return nil, fmt.Errorf("CNI failed to parse ip from output %s due to %v", output, err) - } - - return ip, nil +// newNSManager initializes a new namespace manager, which is a platform dependent struct. +func newNSManager() (*nsManager, error) { + nsm := &nsManager{} + err := nsm.init() + return nsm, err } diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_linux.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_linux.go new file mode 100644 index 000000000..d263ae4df --- /dev/null +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_linux.go @@ -0,0 +1,71 @@ +// +build linux + +package ocicni + +import ( + "fmt" + "net" + "os/exec" + "strings" +) + +var defaultNamespaceEnterCommandName = "nsenter" + +type nsManager struct { + nsenterPath string +} + +func (nsm *nsManager) init() error { + var err error + nsm.nsenterPath, err = exec.LookPath(defaultNamespaceEnterCommandName) + return err +} + +func getContainerDetails(nsm *nsManager, netnsPath, interfaceName, addrType string) (*net.IPNet, *net.HardwareAddr, error) { + // Try to retrieve ip inside container network namespace + output, err := exec.Command(nsm.nsenterPath, fmt.Sprintf("--net=%s", netnsPath), "-F", "--", + "ip", "-o", addrType, "addr", "show", "dev", interfaceName, "scope", "global").CombinedOutput() + if err != nil { + return nil, nil, fmt.Errorf("Unexpected command output %s with error: %v", output, err) + } + + lines := strings.Split(string(output), "\n") + if len(lines) < 1 { + return nil, nil, fmt.Errorf("Unexpected command output %s", output) + } + fields := strings.Fields(lines[0]) + if len(fields) < 4 { + return nil, nil, fmt.Errorf("Unexpected address output %s ", lines[0]) + } + ip, ipNet, err := net.ParseCIDR(fields[3]) + if err != nil { + return nil, nil, fmt.Errorf("CNI failed to parse ip from output %s due to %v", output, err) + } + if ip.To4() == nil { + ipNet.IP = ip + } else { + ipNet.IP = ip.To4() + } + + // Try to retrieve MAC inside container network namespace + output, err = exec.Command(nsm.nsenterPath, fmt.Sprintf("--net=%s", netnsPath), "-F", "--", + "ip", "link", "show", "dev", interfaceName).CombinedOutput() + if err != nil { + return nil, nil, fmt.Errorf("unexpected 'ip link' command output %s with error: %v", output, err) + } + + lines = strings.Split(string(output), "\n") + if len(lines) < 2 { + return nil, nil, fmt.Errorf("unexpected 'ip link' command output %s", output) + } + fields = strings.Fields(lines[1]) + if len(fields) < 4 { + return nil, nil, fmt.Errorf("unexpected link output %s ", lines[0]) + } + mac, err := net.ParseMAC(fields[1]) + if err != nil { + return nil, nil, fmt.Errorf("failed to parse MAC from output %s due to %v", output, err) + } + + return ipNet, &mac, nil +} diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_unsupported.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_unsupported.go new file mode 100644 index 000000000..0b1c72208 --- /dev/null +++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/util_unsupported.go @@ -0,0 +1,19 @@ +// +build !linux + +package ocicni + +import ( + "fmt" + "net" +) + +type nsManager struct { +} + +func (nsm *nsManager) init() error { + return nil +} + +func getContainerDetails(nsm *nsManager, netnsPath, interfaceName, addrType string) (*net.IPNet, *net.HardwareAddr, error) { + return nil, nil, fmt.Errorf("not supported yet") +} |