render

var (
	SelectEndpoint              = TopologySelector(report.Endpoint)
	SelectProcess               = TopologySelector(report.Process)
	SelectContainer             = TopologySelector(report.Container)
	SelectContainerImage        = TopologySelector(report.ContainerImage)
	SelectHost                  = TopologySelector(report.Host)
	SelectPod                   = TopologySelector(report.Pod)
	SelectService               = TopologySelector(report.Service)
	SelectDeployment            = TopologySelector(report.Deployment)
	SelectDaemonSet             = TopologySelector(report.DaemonSet)
	SelectStatefulSet           = TopologySelector(report.StatefulSet)
	SelectCronJob               = TopologySelector(report.CronJob)
	SelectJob                   = TopologySelector(report.Job)
	SelectECSTask               = TopologySelector(report.ECSTask)
	SelectECSService            = TopologySelector(report.ECSService)
	SelectSwarmService          = TopologySelector(report.SwarmService)
	SelectOverlay               = TopologySelector(report.Overlay)
	SelectPersistentVolume      = TopologySelector(report.PersistentVolume)
	SelectPersistentVolumeClaim = TopologySelector(report.PersistentVolumeClaim)
	SelectStorageClass          = TopologySelector(report.StorageClass)
	SelectVolumeSnapshot        = TopologySelector(report.VolumeSnapshot)
	SelectVolumeSnapshotData    = TopologySelector(report.VolumeSnapshotData)
)

The topology selectors implement a Renderer which fetch the nodes from the various report topologies.

var ConnectedProcessRenderer = ColorConnected(ProcessRenderer)

ConnectedProcessRenderer is a Renderer which colors connected nodes, so we can apply a filter to show/hide unconnected nodes depending on user choice.

not memoised

var ContainerHostnameRenderer = FilterEmpty(report.Container,
	MakeReduce(
		MakeMap(
			MapContainer2Hostname,
			ContainerWithImageNameRenderer,
		),

		MakeMap(
			MapToEmpty,
			MakeMap(
				MapContainer2Hostname,
				ContainerRenderer,
			),
		),
	),
)

ContainerHostnameRenderer is a Renderer which produces a renderable container by hostname graph..

not memoised

var ContainerImageRenderer = Memoise(FilterEmpty(report.Container,
	MakeMap(
		MapContainerImage2Name,
		MakeReduce(
			MakeMap(
				MapContainer2ContainerImage,
				ContainerWithImageNameRenderer,
			),
			SelectContainerImage,
		),
	),
))

ContainerImageRenderer is a Renderer which produces a renderable container image graph by merging the container graph and the container image topology.

var ContainerRenderer = Memoise(MakeFilter(
	func(n report.Node) bool {

		state, ok := n.Latest.Lookup(docker.ContainerState)
		return !ok || state != docker.StateDeleted
	},
	MakeReduce(
		MakeMap(
			MapProcess2Container,
			ProcessRenderer,
		),
		ConnectionJoin(MapContainer2IP, report.Container),
	),
))

ContainerRenderer is a Renderer which produces a renderable container graph by merging the process graph and the container topology. NB We only want processes in container _or_ processes with network connections but we need to be careful to ensure we only include each edge once, by only including the ProcessRenderer once.

var ContainerWithImageNameRenderer = Memoise(containerWithImageNameRenderer{ContainerRenderer})

ContainerWithImageNameRenderer is a Renderer which produces a container graph where the ranks are the image names, not their IDs

var ECSServiceRenderer = ConditionalRenderer(renderECSTopologies,
	renderParents(
		report.ECSTask, []string{report.ECSService}, "",
		ECSTaskRenderer,
	),
)

ECSServiceRenderer is a Renderer for Amazon ECS services.

not memoised

var ECSTaskRenderer = Memoise(ConditionalRenderer(renderECSTopologies,
	renderParents(
		report.Container, []string{report.ECSTask}, UnmanagedID,
		MakeFilter(
			IsRunning,
			ContainerWithImageNameRenderer,
		),
	),
))

ECSTaskRenderer is a Renderer for Amazon ECS tasks.

var EndpointRenderer = SelectEndpoint

EndpointRenderer is a Renderer which produces a renderable endpoint graph.

var FilterUnconnected = filterUnconnected{/* contains filtered or unexported fields */}

FilterUnconnected is a transformer that filters unconnected nodes

var FilterUnconnectedPseudo = filterUnconnected{/* contains filtered or unexported fields */}

FilterUnconnectedPseudo is a transformer that filters unconnected pseudo nodes

var HostRenderer = MakeReduce(
	CustomRenderer{RenderFunc: nodes2Hosts, Renderer: ProcessRenderer},
	CustomRenderer{RenderFunc: nodes2Hosts, Renderer: ContainerRenderer},
	CustomRenderer{RenderFunc: nodes2Hosts, Renderer: ContainerImageRenderer},
	CustomRenderer{RenderFunc: nodes2Hosts, Renderer: PodRenderer},
	MapEndpoints(endpoint2Host, report.Host),
)

HostRenderer is a Renderer which produces a renderable host graph from the host topology.

not memoised

var IsPseudoTopology = IsTopology(Pseudo)

IsPseudoTopology returns true if the node is in a pseudo topology, mimicing the check performed by MakeFilter() instead of the more complex check in IsNotPseudo()

var IsStopped = Complement(IsRunning)

IsStopped checks if the node is *not* a running docker container

var IsSystem = Complement(IsApplication)

IsSystem checks if the node is a "system" node

var KubeControllerRenderer = ConditionalRenderer(renderKubernetesTopologies,
	renderParents(
		report.Pod, []string{report.Deployment, report.DaemonSet, report.StatefulSet, report.CronJob, report.Job}, UnmanagedID,
		PodRenderer,
	),
)

KubeControllerRenderer is a Renderer which combines all the 'controller' topologies. Pods with no controller are mapped to 'Unmanaged' We can't simply combine the rendered graphs of the high level objects as they would never have connections to each other.

not memoised

var KubernetesVolumesRenderer = MakeReduce(
	VolumesRenderer,
	PodToVolumeRenderer,
	PVCToStorageClassRenderer,
	PVToSnapshotRenderer,
	VolumeSnapshotRenderer,
)

KubernetesVolumesRenderer is a Renderer which combines all Kubernetes volumes components such as stateful Pods, Persistent Volume, Persistent Volume Claim, Storage Class.

var PVCToStorageClassRenderer = pvcToStorageClassRenderer{}

PVCToStorageClassRenderer is a Renderer which produces a renderable kubernetes PVC & Storage class graph.

var PVToSnapshotRenderer = pvToSnapshotRenderer{}

PVToSnapshotRenderer is a Renderer which produces a renderable kubernetes PV

var PodRenderer = Memoise(ConditionalRenderer(renderKubernetesTopologies,
	MakeFilter(
		func(n report.Node) bool {
			state, ok := n.Latest.Lookup(kubernetes.State)
			return !ok || !(state == kubernetes.StateDeleted || state == kubernetes.StateFailed)
		},
		MakeReduce(
			PropagateSingleMetrics(report.Container,
				MakeMap(propagatePodHost,
					Map2Parent{topologies: []string{report.Pod}, noParentsPseudoID: UnmanagedID,
						chainRenderer: MakeFilter(
							ComposeFilterFuncs(
								IsRunning,
								Complement(isPauseContainer),
							),
							ContainerWithImageNameRenderer,
						)},
				),
			),
			ConnectionJoin(MapPod2IP, report.Pod),
			KubernetesVolumesRenderer,
		),
	),
))

PodRenderer is a Renderer which produces a renderable kubernetes graph by merging the container graph and the pods topology.

var PodServiceRenderer = ConditionalRenderer(renderKubernetesTopologies,
	renderParents(
		report.Pod, []string{report.Service}, "",
		PodRenderer,
	),
)

PodServiceRenderer is a Renderer which produces a renderable kubernetes services graph by merging the pods graph and the services topology.

not memoised

var PodToVolumeRenderer = podToVolumesRenderer{}

PodToVolumeRenderer is a Renderer which produces a renderable kubernetes Pod graph by merging the pods graph and the Persistent Volume Claim topology. Pods having persistent volumes are rendered.

var ProcessNameRenderer = ColorConnected(CustomRenderer{RenderFunc: processes2Names, Renderer: ProcessRenderer})

ProcessNameRenderer is a Renderer which produces a renderable process name graph by munging the progess graph.

It also colors connected nodes, so we can apply a filter to show/hide unconnected nodes depending on user choice.

not memoised

var ProcessRenderer = Memoise(endpoints2Processes{})

ProcessRenderer is a Renderer which produces a renderable process graph by merging the endpoint graph and the process topology.

var (
	// ServiceNodeIDPrefix is how the ID of all service pseudo nodes begin
	ServiceNodeIDPrefix = "service-"
)

var SwarmServiceRenderer = ConditionalRenderer(renderSwarmTopologies,
	renderParents(
		report.Container, []string{report.SwarmService}, UnmanagedID,
		MakeFilter(
			IsRunning,
			ContainerWithImageNameRenderer,
		),
	),
)

SwarmServiceRenderer is a Renderer for Docker Swarm services

not memoised

var UncontainedIDPrefix = MakePseudoNodeID(UncontainedID, "")

UncontainedIDPrefix is the prefix of uncontained pseudo nodes

var UnmanagedIDPrefix = MakePseudoNodeID(UnmanagedID, "")

UnmanagedIDPrefix is the prefix of unmanaged pseudo nodes

var VolumeSnapshotRenderer = volumeSnapshotRenderer{}

VolumeSnapshotRenderer is a renderer which produces a renderable Kubernetes Volume Snapshot and Volume Snapshot Data

var VolumesRenderer = volumesRenderer{}

VolumesRenderer is a Renderer which produces a renderable kubernetes PV & PVC graph by merging the pods graph and the Persistent Volume topology.

var WeaveRenderer = MakeMap(
	MapWeaveIdentity,
	SelectOverlay,
)

WeaveRenderer is a Renderer which produces a renderable weave topology.

not memoised