clab

package
v0.41.2 Latest Latest
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 Go to latest Published: May 18, 2023 License: BSD-3-Clause Imports: 72 Imported by: 1

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Index

Constants

View Source 
const (

	// veth link mtu.
	DefaultVethLinkMTU = 9500
	// containerlab's reserved OUI.
	ClabOUI = "aa:c1:ab"
)

Variables

This section is empty.

Functions

func AddVxLanInterface 

func AddVxLanInterface(vxlan VxLAN) (err error)

AddVxLanInterface creates VxLan interface by given vxlan object.

func AppendHostsFileEntries added in v0.16.2 

func AppendHostsFileEntries(containers []runtime.GenericContainer, labname string) error

func BindIfacesWithTC 

func BindIfacesWithTC(if1, if2 string) (err error)

BindIfacesWithTC creates TC ingress mirred redirection between a pair of interfaces to make them virtually form a kind of a veth pair see https://netdevops.me/2021/transparently-redirecting-packets/frames-between-interfaces/#4-tc-to-the-rescue used https://github.com/redhat-nfvpe/koko/blob/bd156c82bf25837545fb109c69c7b91c3457b318/api/koko_api.go#L224 and https://gist.github.com/mcastelino/7d85f4164ffdaf48242f9281bb1d0f9b#gistcomment-2734521

func DeleteEntriesFromHostsFile added in v0.16.2 

func DeleteEntriesFromHostsFile(labname string) error

func GetLinksByNamePrefix added in v0.14.0 

func GetLinksByNamePrefix(prefix string) ([]netlink.Link, error)

GetLinksByNamePrefix returns a list of links whose name matches a prefix.

func SSHAgentKeys added in v0.41.1 

func SSHAgentKeys() ([]string, error)

SSHAgentKeys retrieves public keys registered with the ssh-agent.

func SetIngressMirror 

func SetIngressMirror(src, dst string) (err error)

SetIngressMirror sets TC to mirror ingress from given port as MirrorIngress.

Types

type CLab 

type CLab struct {
	Config    *Config `json:"config,omitempty"`
	TopoPaths *types.TopoPaths

	Nodes    map[string]nodes.Node               `json:"nodes,omitempty"`
	Links    map[int]*types.Link                 `json:"links,omitempty"`
	Runtimes map[string]runtime.ContainerRuntime `json:"runtimes,omitempty"`

	// reg is a registry of node kinds
	Reg  *nodes.NodeRegistry
	Cert *cert.Cert
	// contains filtered or unexported fields
}

func NewContainerLab 

func NewContainerLab(opts ...ClabOption) (*CLab, error)

NewContainerLab function defines a new container lab.

func (*CLab) BuildGraphFromDeployedLab added in v0.25.0 

func (c *CLab) BuildGraphFromDeployedLab(g *GraphTopo, containers []runtime.GenericContainer)

func (*CLab) BuildGraphFromTopo added in v0.25.0 

func (c *CLab) BuildGraphFromTopo(g *GraphTopo)

func (*CLab) CheckTopologyDefinition 

func (c *CLab) CheckTopologyDefinition(ctx context.Context) error

CheckTopologyDefinition runs topology checks and returns any errors found.

func (*CLab) CreateAuthzKeysFile added in v0.22.0 

func (c *CLab) CreateAuthzKeysFile() error

CreateAuthzKeysFile creats the authorized_keys file in the lab directory if any files ~/.ssh/*.pub found. 

func (c *CLab) CreateLinks(ctx context.Context, workers uint)

CreateLinks creates links using the specified number of workers.

func (*CLab) CreateNetwork added in v0.24.0 

func (c *CLab) CreateNetwork(ctx context.Context) error

func (*CLab) CreateNodes 

func (c *CLab) CreateNodes(ctx context.Context, maxWorkers uint) (*sync.WaitGroup, error)

CreateNodes schedules nodes creation and returns a waitgroup for all nodes. Nodes interdependencies are created in this function.

func (*CLab) CreateVirtualWiring 

func (c *CLab) CreateVirtualWiring(l *types.Link) (err error)

CreateVirtualWiring creates the virtual topology between the containers.

func (*CLab) DeleteNodes added in v0.15.0 

func (c *CLab) DeleteNodes(ctx context.Context, workers uint, serialNodes map[string]struct{})

func (*CLab) GenerateExports added in v0.26.0 

func (c *CLab) GenerateExports(f io.Writer, p string) error

GenerateExports generates various export files and writes it to a lab location.

func (*CLab) GenerateGraph 

func (c *CLab) GenerateGraph(_ string) error

GenerateGraph generates a graph of the lab topology.

func (*CLab) GenerateInventories 

func (c *CLab) GenerateInventories() error

GenerateInventories generate various inventory files and writes it to a lab location.

func (*CLab) GetNodeRuntime added in v0.15.0 

func (c *CLab) GetNodeRuntime(contName string) (runtime.ContainerRuntime, error)

func (*CLab) GetTopology 

func (c *CLab) GetTopology(topo, varsFile string) error

GetTopology parses the topology file into c.Conf structure as well as populates the TopoFile structure with the topology file related information.

func (*CLab) GlobalRuntime added in v0.15.0 

func (c *CLab) GlobalRuntime() runtime.ContainerRuntime

func (*CLab) HasKind added in v0.25.0 

func (c *CLab) HasKind(k string) bool

HasKind returns true if kind k is found in the list of nodes.

func (*CLab) ListContainers 

func (c *CLab) ListContainers(ctx context.Context, filter []*types.GenericFilter) ([]runtime.GenericContainer, error)

ListContainers lists all containers using provided filter.

func (*CLab) ListNodesContainers added in v0.34.0 

func (c *CLab) ListNodesContainers(ctx context.Context) ([]runtime.GenericContainer, error)

ListNodesContainers lists all containers based on the nodes stored in clab instance.

func (*CLab) LoadKernelModules added in v0.41.0 

func (c *CLab) LoadKernelModules() error

LoadKernelModules loads containerlab-required kernel modules.

func (*CLab) LoadOrGenerateCA added in v0.37.0 

func (c *CLab) LoadOrGenerateCA(caCertInput *cert.CACSRInput) error

LoadOrGenerateCA loads the CA certificate from the storage, or generates a new one if it does not exist.

func (*CLab) NewEndpoint 

func (c *CLab) NewEndpoint(e string) *types.Endpoint

NewEndpoint initializes a new endpoint object. 

func (c *CLab) NewLink(l *types.LinkConfig) *types.Link

NewLink initializes a new link object.

func (*CLab) NewNode 

func (c *CLab) NewNode(nodeName, nodeRuntime string, nodeDef *types.NodeDefinition, idx int) error

NewNode initializes a new node object.

func (*CLab) RegisterNodes added in v0.35.0 

func (c *CLab) RegisterNodes()

RegisterNodes registers all the nodes/kinds supported by containerlab.

func (*CLab) RemoveHostOrBridgeVeth added in v0.32.4 

func (c *CLab) RemoveHostOrBridgeVeth(l *types.Link) (err error)

RemoveHostOrBridgeVeth tries to remove veths connected to the host network namespace or a linux bridge and does nothing in case they are not found.

func (*CLab) ServeTopoGraph added in v0.25.0 

func (c *CLab) ServeTopoGraph(tmpl, staticDir, srv string, topoD TopoData) error

func (*CLab) VerifyContainersUniqueness 

func (c *CLab) VerifyContainersUniqueness(ctx context.Context) error

VerifyContainersUniqueness ensures that nodes defined in the topology do not have names of the existing containers additionally it checks that the lab name is unique and no containers are currently running with the same lab name label.

func (*CLab) VethCleanup added in v0.26.0 

func (c *CLab) VethCleanup(_ context.Context) error

VethCleanup iterates over links found in clab topology to initiate removal of dangling veths in host networking namespace or attached to linux bridge. See https://github.com/srl-labs/containerlab/issues/842 for the reference.

func (*CLab) WaitForExternalNodeDependencies added in v0.32.0 

func (c *CLab) WaitForExternalNodeDependencies(ctx context.Context, nodeName string)

WaitForExternalNodeDependencies makes nodes that have a reference to an external container network-namespace (network-mode: container:<NAME>) to wait until the referenced container is in started status. The wait time is 15 minutes by default.

type ClabOption 

type ClabOption func(c *CLab) error

func WithDebug 

func WithDebug(debug bool) ClabOption

WithDebug sets debug mode.

func WithKeepMgmtNet added in v0.15.0 

func WithKeepMgmtNet() ClabOption

func WithNodeFilter added in v0.39.0 

func WithNodeFilter(nodeFilter []string) ClabOption

WithNodeFilter option sets a filter for nodes to be deployed. A filter is a list of node names to be deployed, names are provided exactly as they are listed in the topology file. Since this is altering the clab.config.Topology.[Nodes,Links] it must only be called after WithTopoFile.

func WithRuntime added in v0.14.0 

func WithRuntime(name string, rtconfig *runtime.RuntimeConfig) ClabOption

func WithTimeout 

func WithTimeout(dur time.Duration) ClabOption

func WithTopoFile 

func WithTopoFile(file, varsFile string) ClabOption

type Config 

type Config struct {
	Name     string          `json:"name,omitempty"`
	Prefix   *string         `json:"prefix,omitempty"`
	Mgmt     *types.MgmtNet  `json:"mgmt,omitempty"`
	Topology *types.Topology `json:"topology,omitempty"`
	// the debug flag value as passed via cli
	// may be used by other packages to enable debug logging
	Debug bool `json:"debug"`
}

Config defines lab configuration as it is provided in the YAML file.

type DependencyManager added in v0.32.0 

type DependencyManager interface {
	// AddNode adds a node to the dependency manager.
	AddNode(name string)
	// AddDependency adds a dependency between depender and dependee.
	// The depender will effectively wait for the dependee to finish.
	AddDependency(dependee, depender string) error
	// WaitForNodeDependencies is called by a node that is meant to be created.
	// This call will bock until all the nodes that this node depends on are created.
	WaitForNodeDependencies(nodeName string) error
	// SignalDone is called by a node that has finished the creation process.
	// internally the dependent nodes will be "notified" that an additional (if multiple exist) dependency is satisfied.
	SignalDone(nodeName string)
	// CheckAcyclicity checks if dependencies contain cycles.
	CheckAcyclicity() error
	// String returns a string representation of dependencies recorded with dependency manager.
	String() string
}

func NewDependencyManager added in v0.32.0 

func NewDependencyManager() DependencyManager

type GraphTopo added in v0.25.0 

type GraphTopo struct {
	Nodes []types.ContainerDetails `json:"nodes,omitempty"`
	Links []Link                   `json:"links,omitempty"`
}
type Link struct {
	Source         string `json:"source,omitempty"`
	SourceEndpoint string `json:"source_endpoint,omitempty"`
	Target         string `json:"target,omitempty"`
	TargetEndpoint string `json:"target_endpoint,omitempty"`
}

type TopoData added in v0.25.0 

type TopoData struct {
	Name string
	Data template.JS
}

type TopologyExport added in v0.26.0 

type TopologyExport struct {
	Name        string                       `json:"name"`
	Type        string                       `json:"type"`
	Clab        *CLab                        `json:"clab,omitempty"`
	NodeConfigs map[string]*types.NodeConfig `json:"nodeconfigs,omitempty"`
}

TopologyExport holds a combination of CLab structure and map of NodeConfig types, which expands Node definitions with dynamically created values.

type VxLAN 

type VxLAN struct {
	Name     string // interface name
	ParentIf string // parent interface name
	ID       int    // VxLan ID
	Remote   net.IP // VxLan destination address
	MTU      int    // VxLan Interface MTU (with VxLan encap), used mirroring
	UDPPort  int    // VxLan UDP port (src/dest, no range, single value)
}

VxLAN is a structure to describe vxlan endpoint adopted from https://github.com/redhat-nfvpe/koko/blob/bd156c82bf25837545fb109c69c7b91c3457b318/api/koko_api.go#L46

Source Files

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Directories

Path Synopsis
transport

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