Save a data document in a database with couchdb/python

save_doc.py

"""
  Save a document with couchdb in python
"""

import couchdb
import datetime
import time
import json
import random
import pytz

server = couchdb.Server("http://127.0.0.1:5984")

# Set credentials if necessary
server.resource.credentials = ("username", "password")

# create db if necessary
if "nedm/hg_laser" not in server:
    server.create("nedm/hg_laser")
db = server["nedm/hg_laser"]

# create skeleton doc
adoc = { 
  "type" : "data",
  "created_by" : "mgmarino",
  "value" : {}
  }
  
# loop ten times and insert 10 new documents
while 1:
  # calls to save will automatically update the document
  if "_id" in adoc: del adoc["_id"]
  adoc["timestamp"] = datetime.datetime.utcnow().replace(tzinfo=pytz.utc).strftime('%a, %d %b %Y %H:%M:%S GMT')
  val = random.random()
  adoc["value"]["sensor1"] = val 
  if (val < 0.5) and "sensor2" in adoc["value"]:
      del adoc["value"]["sensor2"]
  else:
      adoc["value"]["sensor2"] = 2*val 
  db.save(adoc)
  print "Saved: ", json.dumps(adoc)
  
  time.sleep(1.5)