Returns a function which accepts an event and sends it to OpenTSDB. Silently drops events when OpenTSDB is down. Attempts to reconnect automatically every five seconds. Use:

(opentsdb {:host “opentsdb.local” :port 4242})

Options:

• :metric-name A function which, given an event, returns the string describing the path of that event in opentsdb. opentsdb-metric-name by default.
• :tags A function which, given an event, returns the hash-map for the tags. opentsdb-tags by default.
• :pool-size The number of connections to keep open. Default 4.
• :reconnect-interval How many seconds to wait between attempts to connect. Default 5.
• :claim-timeout How many seconds to wait for a opentsdb connection from the pool. Default 0.1.
• :block-start Wait for the pool’s initial connections to open before returning.

Constructs a metric-name for an event.

Constructs a tag-key named host from an event. tcollector also generates tag-key named host