heka-py is a Python client for Heka.

Heka is a tool for collecting and collating data from a number of different sources, performing "in-flight" processing of collected data, and delivering the results to any number of destinations for further analysis.

The simplest way to interact with heka-py is to import the package and create a message:

import heka

msg = heka.Message(
    type='ads_served',
    severity=heka.INFO,
    fields={'ad_ids': [1, 2, 3], 'time_taken': 0.010},
)

Try to inspect the data you entered:

msg.type
# 'ads_served'

msg.fields['ad_ids']
# [1, 2, 3]

msg.fields['time_taken']
# [0.01]

Notice that each field in fields is automatically converted to a list. This is because heka supports multiple value per field and heka-py libary converts user input accordingly for convenience.

Heka-py automatically adds some attribtutes to the message:

msg.timestamp  # timestamp in nanoseconds
# 1412857650827009024

msg.uuid  # unique identifier for the message
# '\xab\x16J\x03\xa3\xd4Uy\x88j\xd1\xf7\x93\xca\x83m'

msg.pid  # current process ID
# 8395

msg.hostname  # hostname of machine
# 'dev.seriouscompany.net'

To encode the message:

payload = msg.encode()

payload
# '\n\x10\x12\x81\xcc\xc0(\xc3U\xc4\xbb`\xb0h\x00F8\xa2\x10\x80\x9c\xe1\xc3\xfa\x82\xdf\xcd\x13\x1a\nads_served"\x00(\x072\x00:\x030.8@\xcbAJ\x16dev.seriouscompany.netR\x1a\n\ntime_taken\x10\x03\x1a\x00:\x08{\x14\xaeG\xe1z\x84?R\x11\n\x06ad_ids\x10\x02\x1a\x002\x03\x01\x02\x03'

At this point we want to send the message to Heka. We can use any of the input types that Heka supports. The simplest is UDP:

import socket

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(payload, ('localhost, 5565))

• Rob Miller ([email protected])
• Victor Ng ([email protected])
• Kashif Malik ([email protected])