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96 lines
2.9 KiB
96 lines
2.9 KiB
#!/usr/local/bin/python3
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"""
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adapter_count.py - change the number of adapters
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"""
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import os
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import sys
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import gns3api
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from qt_widgets import SimpleWidgets
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def die(text):
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""" terminate program with error message """
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SimpleWidgets().alert(None, text)
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sys.exit(text)
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# get command line parameter
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if len(sys.argv) < 4:
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die("usage:\ncadapter_count version parameter-file project-id [sel-item ...]")
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try:
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with open(sys.argv[2], "r") as file:
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cntl_url, cntl_user, cntl_passwd, *_ = file.read(512).splitlines()
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if sys.argv[2].endswith(".tmp"):
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os.remove(sys.argv[2])
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except (OSError, ValueError) as err:
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sys.exit("Can't get controller connection params: {}".format(err))
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project_id = sys.argv[3]
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sel_items = sys.argv[4:]
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# get node id from command line
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sel_nodes = [item[6:] for item in sel_items
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if item.startswith("nodes/")]
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if len(sel_nodes) != 1:
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die("Exactly one node must be selected")
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node_id = sel_nodes[0]
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# connect to GNS3 controller
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try:
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api = gns3api.GNS3Api(cntl_url, cntl_user, cntl_passwd)
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except gns3api.GNS3ApiException as err:
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die("Can't connect to GNS3 controller: {}".format(err))
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# get node information
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try:
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node = api.request('GET', ('/v2/projects', project_id, 'nodes', node_id))
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except gns3api.GNS3ApiException as err:
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die("Can't get node information: {}".format(err))
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if node['node_type'] not in ("docker", "iou", "qemu"):
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die("Only the node types Docker, IOU and QEMU are supported")
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if node['status'] != "stopped":
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die("Node must be stopped")
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# New number of adapters
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adapter_property = 'adapters'
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if node['node_type'] == "iou":
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adapter_property = 'ethernet_adapters'
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cur_adapters = node['properties'][adapter_property]
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adapters = SimpleWidgets().get_int(None, "Adapters", cur_adapters, 1)
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if adapters is None or adapters == cur_adapters:
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sys.exit(0) # Nothing to do
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# Get links of the node
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try:
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links = api.request('GET', ('/v2/projects', project_id, 'nodes', node_id, 'links'))
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except gns3api.GNS3ApiException as err:
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die("Can't get link information: {}".format(err))
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# delete links of the node
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try:
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for link in links:
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api.request('DELETE', ('/v2/projects', project_id, 'links', link['link_id']))
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except gns3api.GNS3ApiException as err:
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die("Can't delete link: {}".format(err))
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# update adapter count
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update_err = None
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try:
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api.request('PUT', ('/v2/projects', project_id, 'nodes', node_id),
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{'properties': {adapter_property: adapters}})
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except gns3api.GNS3ApiException as err:
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update_err = "Can't update adapter count: {}".format(err)
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# restore the links
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for link in links:
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del link['link_id']
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try:
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api.request('POST', ('/v2/projects', project_id, 'links'), link)
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except gns3api.GNS3ApiException as err:
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if not isinstance(err, gns3api.HTTPError) or err.args[0] != 404:
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die("Can't restore link: {}".format(err))
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if update_err:
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die(update_err)
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