org.apache.avro.ipc.trace
Interface SpanStorage

All Known Implementing Classes:

FileSpanStorage, InMemorySpanStorage

public interface SpanStorage

Responsible for storing spans locally and answering span queries. Since query for a given set of spans may persist over several RPC calls, they are indexed by a handle.

Field Summary

static long	DEFAULT_MAX_SPANS
static long	MILLIS_PER_SECOND
static long	NANOS_PER_SECOND

Method Summary

void	addSpan(Span s) Add a span.
List<Span>	getAllSpans() Return a list of all spans currently stored.
List<Span>	getSpansInRange(long start, long end) Return a list of all spans that fall within the time given range.
void	setMaxSpans(long maxSpans) Set the maximum number of spans to have in storage at any given time.

Field Detail

DEFAULT_MAX_SPANS

static final long DEFAULT_MAX_SPANS

See Also:

Constant Field Values

MILLIS_PER_SECOND

static final long MILLIS_PER_SECOND

See Also:

Constant Field Values

NANOS_PER_SECOND

static final long NANOS_PER_SECOND

See Also:

Constant Field Values

Method Detail

addSpan

void addSpan(Span s)

Add a span.

Parameters:

s -

setMaxSpans

void setMaxSpans(long maxSpans)

Set the maximum number of spans to have in storage at any given time.

getAllSpans

List<Span> getAllSpans()

Return a list of all spans currently stored. For testing.

getSpansInRange

List<Span> getSpansInRange(long start,
                           long end)

Return a list of all spans that fall within the time given range.

Parameters:

start - UNIX time (in nanoseconds) as a long

end - UNIX time (in nanoseconds) as a long