Update the source on all streams inside a set of Librato Spaces

update_chart_streams.py

import requests, json

username = 'me@example.com
token = 'abcd1234'
api = "https://metrics-api.librato.com"


# Find spaces
search = 'string to search'
url = api + "/v1/spaces?name=%s" % search
response = requests.get(url, auth=(username, token))
spaces = response.json()['spaces']

# Iterate through the spaces and update the charts
updated_streams = []
old_source = 'austin'
new_source = 'sf'

for space in spaces:
    print space['name']
    # http://dev.librato.com/v1/get/spaces/:id/charts
    path = "/v1/spaces/%d/charts" % space['id']
    print path

    response = requests.get(api + path, auth=(username, token))
    charts = response.json()

    # Now find all the streams with the source we want to replace
  
    for chart in charts:
        # Iterate through the streams and do the replacement
        changed = False
        for stream in chart['streams']:
            if stream.get('source') == old_source:
                print "replace source in " + str({"chart_name": chart.get('name'), "stream_id": stream['id'], "source": stream.get('source')}) + " with " + new_source
                # Here's where the magic happens
                # Update the source
                stream['source'] = new_source
                updated_streams.append(stream)
                changed = True
        
        if changed:
            # Now update the chart
            # http://dev.librato.com/v1/put/spaces/:id/charts/:id
            print "Updating chart " + chart.get('name')
            path = "/v1/spaces/%d/charts/%d" % (space['id'], chart['id'])
            url = api + path
            print url
            # The chart is the payload - it includes the streams
            # Only updating the streams here
            payload = {"streams": chart['streams']}        
            response = requests.put(url, json=payload, auth=(username, token), headers={'Content-type': 'application/json'})
            print "Status code: %s" % response.status_code
        else:
            print "Found nothing to update in %s" % chart.get('name')

# print updated_streams