riemann.index — com.leafclick/riemann-slim 0.3.9

Maintains a stateful index of events by [host, service] key. Can be queried to return the most recent indexed events matching some expression. Can expire events which have exceeded their TTL. Presently the only implementation of the index protocol is backed by a nonblockinghashmap, but I plan to add an HSQLDB backend as well.

Indexes must extend three protocols:

• Index: indexing and querying events
• Seqable: returning a list of events
• Service: lifecycle management

default-ttl clj

index clj

(index)

Create a new index (currently: an nhbm index)

Index clj protocol

clear clj

(clear this)

Resets the index

delete clj

(delete this event)

Deletes any event with this host & service from index. Returns the deleted event, or nil.

delete-exactly clj

(delete-exactly this event)

Deletes event from index. Returns the deleted event, or nil.

expire clj

(expire this)

Return a seq of expired states from this index, removing each.

insert clj

(insert this event)

Updates index with event

lookup clj

(lookup this host service)

Lookup an indexed event from the index

search clj

(search this query-ast)

Returns a seq of events from the index matching this query AST

nbhm-index clj

(nbhm-index)

Create a new nonblockinghashmap backed index

query-for-host-and-service clj

(query-for-host-and-service query-ast)

Check if the AST is only searching for the host and service

update clj

(update index-instance event)