Package com.yahoo.vespa.hosted.node.admin.nodeadmin

Class NodeAdminImpl

java.lang.Object

com.yahoo.vespa.hosted.node.admin.nodeadmin.NodeAdminImpl

All Implemented Interfaces:

NodeAdmin

public class NodeAdminImpl
extends Object
implements NodeAdmin

Administers a host (for now only docker hosts) and its nodes (docker containers nodes).

Author:

stiankri

Constructor Summary

Constructors

Constructor	Description
NodeAdminImpl(NodeAgentFactory nodeAgentFactory, Metrics metrics, Clock clock, FileSystem fileSystem)
NodeAdminImpl(NodeAgentFactory nodeAgentFactory, Metrics metrics, Clock clock, Duration freezeTimeout, Duration spread, ProcMeminfoReader procMeminfoReader)

Method Summary

Modifier and Type	Method	Description
boolean	isFrozen()	Returns whether NodeAdmin itself is currently frozen, meaning it will not pick up any changes from NodeRepository.
void	refreshContainersToRun(Set<NodeAgentContext> nodeAgentContexts)	Start/stop NodeAgents and schedule next NodeAgent ticks with the given NodeAgentContexts
boolean	setFrozen(boolean wantFrozen)	Attempts to freeze/unfreeze all NodeAgents and itself.
void	start()	Start node-admin schedulers.
void	stop()	Stop the NodeAgents.
void	stopNodeAgentServices()	Stop all services on these nodes
Duration	subsystemFreezeDuration()	Returns an upper bound on the time some or all parts of the node admin (including agents) have been frozen.
void	updateMetrics(boolean isSuspended)	Update node admin metrics

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NodeAdminImpl

public NodeAdminImpl(NodeAgentFactory nodeAgentFactory,
 Metrics metrics,
 Clock clock,
 FileSystem fileSystem)

NodeAdminImpl

public NodeAdminImpl(NodeAgentFactory nodeAgentFactory,
 Metrics metrics,
 Clock clock,
 Duration freezeTimeout,
 Duration spread,
 ProcMeminfoReader procMeminfoReader)

Method Details

refreshContainersToRun

public void refreshContainersToRun(Set<NodeAgentContext> nodeAgentContexts)

Description copied from interface: NodeAdmin

Start/stop NodeAgents and schedule next NodeAgent ticks with the given NodeAgentContexts

Specified by:

refreshContainersToRun in interface NodeAdmin

updateMetrics

public void updateMetrics(boolean isSuspended)

Description copied from interface: NodeAdmin

Update node admin metrics

Specified by:

updateMetrics in interface NodeAdmin

setFrozen

public boolean setFrozen(boolean wantFrozen)

Description copied from interface: NodeAdmin

Attempts to freeze/unfreeze all NodeAgents and itself. To freeze a NodeAgent means that they will not pick up any changes from NodeRepository.

Specified by:

setFrozen in interface NodeAdmin

Parameters:

wantFrozen - whether NodeAgents and NodeAdmin should be frozen

Returns:

True if all the NodeAgents and NodeAdmin has converged to the desired state

isFrozen

public boolean isFrozen()

Description copied from interface: NodeAdmin

Returns whether NodeAdmin itself is currently frozen, meaning it will not pick up any changes from NodeRepository.

Specified by:

isFrozen in interface NodeAdmin

subsystemFreezeDuration

public Duration subsystemFreezeDuration()

Description copied from interface: NodeAdmin

Returns an upper bound on the time some or all parts of the node admin (including agents) have been frozen. Returns 0 if not frozen, nor trying to freeze.

Specified by:

subsystemFreezeDuration in interface NodeAdmin

stopNodeAgentServices

public void stopNodeAgentServices()

Description copied from interface: NodeAdmin

Stop all services on these nodes

Specified by:

stopNodeAgentServices in interface NodeAdmin

start

public void start()

Description copied from interface: NodeAdmin

Start node-admin schedulers.

Specified by:

start in interface NodeAdmin

stop

public void stop()

Description copied from interface: NodeAdmin

Stop the NodeAgents. Will not delete the storage or stop the container.

Specified by:

stop in interface NodeAdmin