notifications

package
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Published: Oct 30, 2020 License: AGPL-3.0 Imports: 10 Imported by: 4

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Functions

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Types

type ConsensusTracingConsumer

type ConsensusTracingConsumer struct {
	// inherit from noop consumer in order to satisfy the full interface
	NoopConsumer
	// contains filtered or unexported fields
}

ConsensusTracingConsumer is an implementation of the notifications consumer that adds tracing for consensus node hotstuff

func NewConsensusTracingConsumer

func NewConsensusTracingConsumer(log zerolog.Logger, tracer module.Tracer, index storage.Index) *ConsensusTracingConsumer

func (*ConsensusTracingConsumer) OnBlockIncorporated

func (tc *ConsensusTracingConsumer) OnBlockIncorporated(block *model.Block)

func (*ConsensusTracingConsumer) OnFinalizedBlock

func (tc *ConsensusTracingConsumer) OnFinalizedBlock(block *model.Block)

func (*ConsensusTracingConsumer) OnProposingBlock

func (tc *ConsensusTracingConsumer) OnProposingBlock(proposal *model.Proposal)

type LogConsumer

type LogConsumer struct {
	// contains filtered or unexported fields
}

LogConsumer is an implementation of the notifications consumer that logs a message for each event.

func NewLogConsumer

func NewLogConsumer(log zerolog.Logger) *LogConsumer

func (*LogConsumer) OnBlockIncorporated

func (lc *LogConsumer) OnBlockIncorporated(block *model.Block)

func (*LogConsumer) OnDoubleProposeDetected

func (lc *LogConsumer) OnDoubleProposeDetected(block *model.Block, alt *model.Block)

func (*LogConsumer) OnDoubleVotingDetected

func (lc *LogConsumer) OnDoubleVotingDetected(vote *model.Vote, alt *model.Vote)

func (*LogConsumer) OnEnteringView

func (lc *LogConsumer) OnEnteringView(view uint64, leader flow.Identifier)

func (*LogConsumer) OnEventProcessed

func (lc *LogConsumer) OnEventProcessed()

func (*LogConsumer) OnFinalizedBlock

func (lc *LogConsumer) OnFinalizedBlock(block *model.Block)

func (*LogConsumer) OnForkChoiceGenerated

func (lc *LogConsumer) OnForkChoiceGenerated(view uint64, qc *flow.QuorumCertificate)

func (*LogConsumer) OnInvalidVoteDetected

func (lc *LogConsumer) OnInvalidVoteDetected(vote *model.Vote)

func (*LogConsumer) OnProposingBlock

func (lc *LogConsumer) OnProposingBlock(block *model.Proposal)

func (*LogConsumer) OnQcConstructedFromVotes

func (lc *LogConsumer) OnQcConstructedFromVotes(qc *flow.QuorumCertificate)

func (*LogConsumer) OnQcIncorporated

func (lc *LogConsumer) OnQcIncorporated(qc *flow.QuorumCertificate)

func (*LogConsumer) OnQcTriggeredViewChange

func (lc *LogConsumer) OnQcTriggeredViewChange(qc *flow.QuorumCertificate, newView uint64)

func (*LogConsumer) OnReachedTimeout

func (lc *LogConsumer) OnReachedTimeout(info *model.TimerInfo)

func (*LogConsumer) OnReceiveProposal

func (lc *LogConsumer) OnReceiveProposal(currentView uint64, proposal *model.Proposal)

func (*LogConsumer) OnReceiveVote

func (lc *LogConsumer) OnReceiveVote(currentView uint64, vote *model.Vote)

func (*LogConsumer) OnStartingTimeout

func (lc *LogConsumer) OnStartingTimeout(info *model.TimerInfo)

func (*LogConsumer) OnVoting

func (lc *LogConsumer) OnVoting(vote *model.Vote)

type NoopConsumer

type NoopConsumer struct{}

NoopConsumer is an implementation of the notifications consumer that doesn't do anything.

func NewNoopConsumer

func NewNoopConsumer() *NoopConsumer

func (*NoopConsumer) OnBlockIncorporated

func (*NoopConsumer) OnBlockIncorporated(*model.Block)

func (*NoopConsumer) OnDoubleProposeDetected

func (*NoopConsumer) OnDoubleProposeDetected(*model.Block, *model.Block)

func (*NoopConsumer) OnDoubleVotingDetected

func (*NoopConsumer) OnDoubleVotingDetected(*model.Vote, *model.Vote)

func (*NoopConsumer) OnEnteringView

func (*NoopConsumer) OnEnteringView(uint64, flow.Identifier)

func (*NoopConsumer) OnEventProcessed

func (*NoopConsumer) OnEventProcessed()

func (*NoopConsumer) OnFinalizedBlock

func (*NoopConsumer) OnFinalizedBlock(*model.Block)

func (*NoopConsumer) OnForkChoiceGenerated

func (*NoopConsumer) OnForkChoiceGenerated(uint64, *flow.QuorumCertificate)

func (*NoopConsumer) OnInvalidVoteDetected

func (*NoopConsumer) OnInvalidVoteDetected(*model.Vote)

func (*NoopConsumer) OnProposingBlock

func (c *NoopConsumer) OnProposingBlock(*model.Proposal)

func (*NoopConsumer) OnQcConstructedFromVotes

func (c *NoopConsumer) OnQcConstructedFromVotes(*flow.QuorumCertificate)

func (*NoopConsumer) OnQcIncorporated

func (*NoopConsumer) OnQcIncorporated(*flow.QuorumCertificate)

func (*NoopConsumer) OnQcTriggeredViewChange

func (c *NoopConsumer) OnQcTriggeredViewChange(*flow.QuorumCertificate, uint64)

func (*NoopConsumer) OnReachedTimeout

func (*NoopConsumer) OnReachedTimeout(*model.TimerInfo)

func (*NoopConsumer) OnReceiveProposal

func (c *NoopConsumer) OnReceiveProposal(uint64, *model.Proposal)

func (*NoopConsumer) OnReceiveVote

func (c *NoopConsumer) OnReceiveVote(uint64, *model.Vote)

func (*NoopConsumer) OnStartingTimeout

func (*NoopConsumer) OnStartingTimeout(*model.TimerInfo)

func (*NoopConsumer) OnVoting

func (c *NoopConsumer) OnVoting(*model.Vote)

type PathHandler

type PathHandler struct {
	// contains filtered or unexported fields
}

PathHandler maintains a notion of the current path through the state machine. It allows to close a path and open new path. Each path is identified by a unique (randomly generated) uuid. Along each path, we can capture information about relevant Steps (each step is represented by a Zerolog Event). In case there is no currently open path, the PathHandler still returns a Step, but such steps are logged as telemetry errors.

func NewPathHandler

func NewPathHandler(log zerolog.Logger, chain flow.ChainID) *PathHandler

NewPathHandler instantiate a new PathHandler. The PathHandler has no currently open path

func (*PathHandler) CloseCurrentPath

func (p *PathHandler) CloseCurrentPath() *PathHandler

CloseCurrentPath closes the current path. Repeated calls to CloseCurrentPath are handled. All Details hereafter, until a new Path is started, are logged as telemetry Errors. Returns self-reference for chaining

func (*PathHandler) IsCurrentPathClosed

func (p *PathHandler) IsCurrentPathClosed() bool

IsCurrentPathOpen if and only is the most recently started path has been closed.

func (*PathHandler) NextStep

func (p *PathHandler) NextStep() *zerolog.Event

NextStep returns a Zerolog event for the currently open path. If the current path is closed, the event will be logged as telemetry error.

func (*PathHandler) StartNextPath

func (p *PathHandler) StartNextPath(view uint64) *PathHandler

StartNextPath starts a new Path. Implicitly closes previous path if still open. Returns self-reference for chaining

type SlashingViolationsConsumer

type SlashingViolationsConsumer struct {
	NoopConsumer
	// contains filtered or unexported fields
}

SlashingViolationsConsumer is an implementation of the notifications consumer that logs a message for any slashable offences.

func NewSlashingViolationsConsumer

func NewSlashingViolationsConsumer(log zerolog.Logger) *SlashingViolationsConsumer

func (*SlashingViolationsConsumer) OnDoubleProposeDetected

func (c *SlashingViolationsConsumer) OnDoubleProposeDetected(block1 *model.Block, block2 *model.Block)

func (*SlashingViolationsConsumer) OnDoubleVotingDetected

func (c *SlashingViolationsConsumer) OnDoubleVotingDetected(vote1 *model.Vote, vote2 *model.Vote)

func (*SlashingViolationsConsumer) OnInvalidVoteDetected

func (c *SlashingViolationsConsumer) OnInvalidVoteDetected(vote *model.Vote)

type TelemetryConsumer

type TelemetryConsumer struct {
	NoopConsumer
	// contains filtered or unexported fields
}

TelemetryConsumer implements the hotstuff.Consumer interface. consumes outbound notifications produced by the The HotStuff state machine. For this purpose, the TelemetryConsumer enriches the state machine's notifications:

  • the goal is to identify all events as belonging together that were emitted during a path through the state machine.
  • A path through the state machine begins when:
  • a vote is received
  • a block is received
  • a new view is started
  • a timeout is processed
  • Each path through the state machine is identified by a unique id.

Generally, the TelemetryConsumer could export the collected data to a variety of backends. For now, we export the data to a logger.

Telemetry does NOT capture slashing notifications

func NewTelemetryConsumer

func NewTelemetryConsumer(log zerolog.Logger, chain flow.ChainID) *TelemetryConsumer

func (*TelemetryConsumer) OnBlockIncorporated

func (t *TelemetryConsumer) OnBlockIncorporated(block *model.Block)

func (*TelemetryConsumer) OnEnteringView

func (t *TelemetryConsumer) OnEnteringView(viewNumber uint64, leader flow.Identifier)

func (*TelemetryConsumer) OnEventProcessed

func (t *TelemetryConsumer) OnEventProcessed()

func (*TelemetryConsumer) OnFinalizedBlock

func (t *TelemetryConsumer) OnFinalizedBlock(block *model.Block)

func (*TelemetryConsumer) OnForkChoiceGenerated

func (t *TelemetryConsumer) OnForkChoiceGenerated(current_view uint64, qc *flow.QuorumCertificate)

func (*TelemetryConsumer) OnProposingBlock

func (t *TelemetryConsumer) OnProposingBlock(proposal *model.Proposal)

func (*TelemetryConsumer) OnQcConstructedFromVotes

func (t *TelemetryConsumer) OnQcConstructedFromVotes(qc *flow.QuorumCertificate)

func (*TelemetryConsumer) OnQcIncorporated

func (t *TelemetryConsumer) OnQcIncorporated(qc *flow.QuorumCertificate)

func (*TelemetryConsumer) OnQcTriggeredViewChange

func (t *TelemetryConsumer) OnQcTriggeredViewChange(qc *flow.QuorumCertificate, newView uint64)

func (*TelemetryConsumer) OnReachedTimeout

func (t *TelemetryConsumer) OnReachedTimeout(info *model.TimerInfo)

func (*TelemetryConsumer) OnReceiveProposal

func (t *TelemetryConsumer) OnReceiveProposal(currentView uint64, proposal *model.Proposal)

func (*TelemetryConsumer) OnReceiveVote

func (t *TelemetryConsumer) OnReceiveVote(currentView uint64, vote *model.Vote)

func (*TelemetryConsumer) OnStartingTimeout

func (t *TelemetryConsumer) OnStartingTimeout(info *model.TimerInfo)

func (*TelemetryConsumer) OnVoting

func (t *TelemetryConsumer) OnVoting(vote *model.Vote)

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