blob: 20f9bc76f3eb5b5f60c19f3e2432fcb008790c88 [file] [log] [blame]
#! /usr/bin/env python
# -*- Mode: python; py-indent-offset: 4; tab-width: 8; -*-
"""
onoscli : ONOS-specific Command Line Interface
Usage:
# Running the CLI in interactive mode:
$ ./onoscli
# Running multiple CLI commands in batch mode
$ cat commands.txt | ./onoscli
# Running a single command from the system command-line
$ ./onoscli -c show switch all
# Run the following command for additional help
$ ./onoscli -h
"""
#
# INSTALLATION NOTES: MUST install Python cmd2 module. E.g., on Ubuntu:
# sudo apt-get install python-cmd2
# On older Ubuntu installations (e.g., Ubuntu-12.04), install also:
# sudo apt-get install python-pyparsing
#
#
# ADDING A NEW CLI COMMAND:
# 1. Add the appropriate Command entry (or entries) inside array
# OnosCli.init_commands.
# See the comments for init_commands for details.
# 2. Add the appropriate callback (inside class OnosCli) for the CLI command
#
#
import sys
import argparse
import json
from optparse import make_option
import urllib2
from urllib2 import URLError, HTTPError
import cmd2
from cmd2 import Cmd
from cmd2 import options
class Command():
"Command node. A hierarchy of nodes are organized in a command tree."
def __init__(self, name, help, callback=None, add_parser_args=None):
"""name: a string with the full command name
help: the help string for the command
callback: the method to be called if the command is executed
add_parser_args: the parser arguments to add to the command: a dictionary of argparse arguments"""
# Normalize the name by removing extra spaces
self.split_name = name.split() # List of the words in the name
self.name = ' '.join(self.split_name) # Normalized name
self.last_subname = self.split_name[-1] # Last word in the name
self.parent_name = ' '.join(self.split_name[:-1]) # Name of parent command
self.help = help # THe help string
self.callback = callback # The command callback
self.add_parser_args = add_parser_args # Parser arguments to add
self.parent = None # The parent Command
self.children = [] # The children Command entries
class OnosCli(Cmd):
"The main ONOS CLI class"
# Setup generic CLI fields
intro = "Welcome to the ONOS CLI. Type help or ? to list commands.\n"
prompt = "(onos) "
settable = Cmd.settable + "prompt CLI prompt"
# Setup ONOS-specific fields
onos_ip = "127.0.0.1"
settable = settable + "onos_ip ONOS IP address"
onos_port = 8080
settable = settable + "onos_port ONOS REST port number"
output_format = "json" # Valid values: json, text
settable = settable + "output_format The output format: `text` or `json`"
# Collection of commands sorted by the level in the CLI command hierarchy
commands = []
# Commands, parsers and subparsers keyed by the command name
commands_dict = {}
parsers_dict = {}
subparsers_dict = {}
def __init__(self):
Cmd.__init__(self)
#
# An array of the ONOS-specific CLI commands.
# Each entry is a Command instance, and must have at least
# two arguments:
# * Command name as typed on the CLI. E.g.:
# "show intent"
# * Command help description. E.g.:
# "Show intents"
#
# Executable commands should have a third Command argument, which is
# the name of the method to be called when the command is executed.
# The method will be called with the (argparse) parsed arguments
# for that command.
#
# If an executable command takes arguments, those should be described
# in the Command's fourth argument. It is a list of pairs:
# [
# ("--argument-name1", dict(...)),
# ("--argument-name2", dict(...)),
# ...
# ]
# where the first entry in the pair is the argument name, and the
# second entry in the pair is a dictionary with argparse-specific
# description of the argument.
#
init_commands = [
Command("delete", "Delete command"),
#
Command("delete intent",
"""Delete high-level intents
Usage:
delete intent --intent-id INTENT_ID Delete a high-level intent
delete intent --all Delete all high-level intents
Arguments:
--intent-id INTENT_ID The Intent ID (an integer)
--all Delete all high-level intents""",
self.delete_intent,
[
("--intent-id", dict(required=False, type=int)),
("--all", dict(required=False, action='store_true'))
]
),
#
Command("set", "Set command"),
#
Command("set intent",
"""Set a high-level intent
Usage:
set intent <ARGS>
Arguments:
--intent-id INTENT_ID The Intent ID (an integer) (REQUIRED)
--src-dpid SRC_DPID Source Switch DPID (REQUIRED)
--src-port SRC_PORT Source Switch Port (REQUIRED)
--dst-dpid DST_DPID Destination Switch DPID (REQUIRED)
--dst-port DST_PORT Destination Switch Port (REQUIRED)
--match-src-mac MATCH_SRC_MAC Matching Source MAC Address (REQUIRED)
--match-dst-mac MATCH_DST_MAC Matching Destination MAC Address (REQUIRED)""",
self.set_intent,
[
("--intent-id", dict(required=True, type=int)),
("--src-dpid", dict(required=True)),
("--src-port", dict(required=True, type=int)),
("--dst-dpid", dict(required=True)),
("--dst-port", dict(required=True, type=int)),
("--match-src-mac", dict(required=True)),
("--match-dst-mac", dict(required=True))
]),
#
Command("show", "Show command"),
#
Command("show device", "Show devices"),
#
Command("show device all", "Show all devices", self.show_device_all),
#
Command("show intent", "Show intents"),
#
Command("show intent high",
"""Show all high-level intents
show intent high --intent-id INTENT_ID Show a high-level intent""",
self.show_intent_high,
[
("--intent-id", dict(required=False, type=int))
]
),
#
Command("show intent low",
"""Show all low-level intents
show intent low --intent-id INTENT_ID Show a low-level intent""",
self.show_intent_low,
[
("--intent-id", dict(required=False))
]
),
#
Command("show link", "Show links"),
#
Command("show link all", "Show all links", self.show_link_all),
#
Command("show path", "Show a path"),
#
Command("show path shortest",
"""Show a shortest path
Usage:
show path shortest --src-dpid SRC_DPID --dst-dpid DST_DPID
Arguments:
--src-dpid SRC_DPID Source Switch DPID
--dst-dpid DST_DPID Destination Switch DPID""",
self.show_path_shortest,
[
("--src-dpid", dict(required=True)),
("--dst-dpid", dict(required=True))
]),
#
Command("show switch", "Show switches"),
#
Command("show switch all", "Show all switches", self.show_switch_all),
#
Command("show topology", "Show network topology"),
#
Command("show topology all", "Show whole network topology", self.show_topology_all)
]
# Sort the commands by the level in the CLI command hierarchy
self.commands = sorted(init_commands, key = lambda c: len(c.name.split()))
# Create a dictionary with all commands: name -> Command
for c in self.commands:
self.commands_dict[c.name] = c
# Create a tree with all commands
for c in self.commands:
if c.parent_name:
pc = self.commands_dict[c.parent_name]
pc.children.append(c)
c.parent = pc
# Create the parsers and the sub-parsers
for c in self.commands:
# Add a parser
parser = None
if c.parent is None:
# Add a top-level parser
parser = argparse.ArgumentParser(description=c.help,
prog=c.name,
add_help=False)
else:
# Add a parser from the parent's subparser
parent_subparser = self.subparsers_dict[c.parent_name]
parser = parent_subparser.add_parser(c.last_subname,
help=c.help,
add_help=False)
self.parsers_dict[c.name] = parser
# Add a sub-parser
if c.children:
subparser = parser.add_subparsers(help=c.help)
self.subparsers_dict[c.name] = subparser
# Setup the callback
if c.callback is not None:
parser.set_defaults(func=c.callback)
# Init the argument parser
if c.add_parser_args is not None:
for a in c.add_parser_args:
(p1, p2) = a
parser.add_argument(p1, **p2)
def delete_intent(self, args):
"CLI command callback: delete intent"
url = ""
if args.all:
# Delete all intents
url = "http://%s:%s/wm/onos/intent/high" % (self.onos_ip, self.onos_port)
else:
if args.intent_id is None:
print "*** Unknown syntax:"
self.help_delete()
return;
# Delete an intent
url = "http://%s:%s/wm/onos/intent/high/%s" % (self.onos_ip, self.onos_port, args.intent_id)
result = delete_json(url)
# NOTE: No need to print the response
# if len(result) != 0:
# self.print_json_result(result)
def set_intent(self, args):
"CLI command callback: set intent"
intents = []
oper = {}
# Create the POST payload
oper['intentId'] = args.intent_id
oper['intentType'] = 'CONSTRAINED_SHORTEST_PATH' # XXX: Hardcoded
oper['staticPath'] = False # XXX: Hardcoded
oper['srcSwitchDpid'] = args.src_dpid
oper['srcSwitchPort'] = args.src_port
oper['dstSwitchDpid'] = args.dst_dpid
oper['dstSwitchPort'] = args.dst_port
oper['matchSrcMac'] = args.match_src_mac
oper['matchDstMac'] = args.match_dst_mac
intents.append(oper)
url = "http://%s:%s/wm/onos/intent/high" % (self.onos_ip, self.onos_port)
result = post_json(url, intents)
# NOTE: No need to print the response
# if len(result) != 0:
# self.print_json_result(result)
def show_device_all(self, args):
"CLI command callback: show device all"
url = "http://%s:%s/wm/onos/topology/devices" % (self.onos_ip, self.onos_port)
result = get_json(url)
self.print_json_result(result)
def show_intent_high(self, args):
"CLI command callback: show intent high"
if args.intent_id is None:
# Show all intents
url = "http://%s:%s/wm/onos/intent/high" % (self.onos_ip, self.onos_port)
else:
# Show a single intent
url = "http://%s:%s/wm/onos/intent/high/%s" % (self.onos_ip, self.onos_port, args.intent_id)
result = get_json(url)
self.print_json_result(result)
def show_intent_low(self, args):
"CLI command callback: show intent low"
if args.intent_id is None:
# Show all intents
url = "http://%s:%s/wm/onos/intent/low" % (self.onos_ip, self.onos_port)
else:
# Show a single intent
url = "http://%s:%s/wm/onos/intent/low/%s" % (self.onos_ip, self.onos_port, args.intent_id)
result = get_json(url)
self.print_json_result(result)
def show_link_all(self, args):
"CLI command callback: show link all"
url = "http://%s:%s/wm/onos/topology/links" % (self.onos_ip, self.onos_port)
result = get_json(url)
#
if (self.output_format == "json"):
self.print_json_result(result)
else:
# NOTE: The code below is for demo purpose only how to
# decode and print the links in text format. It will be
# reimplemented in the future.
links = result
print "# src_dpid src_port -> dst_dpid dst_port"
for v in sorted(links, key=lambda x: x['src-switch']):
if v.has_key('dst-switch'):
dst_dpid = str(v['dst-switch'])
if v.has_key('src-switch'):
src_dpid = str(v['src-switch'])
if v.has_key('src-port'):
src_port = str(v['src-port'])
if v.has_key('dst-port'):
dst_port = str(v['dst-port'])
self.print_result("%s %s -> %s %s" % (src_dpid, src_port, dst_dpid, dst_port))
def show_path_shortest(self, args):
"CLI command callback: show path shortest"
url = "http://%s:%s/wm/onos/intent/path/switch/%s/shortest-path/%s" % (self.onos_ip, self.onos_port, args.src_dpid, args.dst_dpid)
result = get_json(url)
#
self.print_json_result(result)
def show_switch_all(self, args):
"CLI command callback: show switch all"
url = "http://%s:%s/wm/onos/topology/switches" % (self.onos_ip, self.onos_port)
result = get_json(url)
#
self.print_json_result(result)
def show_topology_all(self, args):
"CLI command callback: show topology all"
url = "http://%s:%s/wm/onos/topology" % (self.onos_ip, self.onos_port)
result = get_json(url)
#
self.print_json_result(result)
#
# Implement "delete" top-level command
#
def do_delete(self, arg):
"Top-level 'delete' command"
self.impl_do_command('delete', arg)
def complete_delete(self, text, line, begidx, endidx):
"Completion of top-level 'delete' command"
return self.impl_complete_command('delete', text, line, begidx, endidx)
def help_delete(self):
"Help for top-level 'delete' command"
self.impl_help_command('delete')
#
# Implement "set" top-level command
#
def do_set(self, arg):
"Top-level 'set' command"
self.impl_do_command('set', arg)
def complete_set(self, text, line, begidx, endidx):
"Completion of top-level 'set' command"
return self.impl_complete_command('set', text, line, begidx, endidx)
def help_set(self):
"Help for top-level 'set' command"
self.impl_help_command('set')
#
# Implement "show" top-level command
#
def do_show(self, arg):
"Top-level 'show' command"
self.impl_do_command('show', arg)
def complete_show(self, text, line, begidx, endidx):
"Completion of top-level 'show' command"
return self.impl_complete_command('show', text, line, begidx, endidx)
def help_show(self):
"Help for top-level 'show' command"
self.impl_help_command('show')
#
# Implement the "do_something" top-level command execution
#
def impl_do_command(self, root_name, arg):
"Implementation of top-level 'do_something' command execution"
parser = self.parsers_dict[root_name]
parsed_args = parser.parse_args(arg.split())
parsed_args.func(parsed_args)
#
# Implement the "complete_something" top-level command completion
#
def impl_complete_command(self, root_name, text, line, begidx, endidx):
"Implementation of top-level 'complete_something' command completion"
root_command = self.commands_dict[root_name]
subtree_commands = self.collect_subtree_commands(root_command)
#
# Loop through the commands and add their portion
# of the sub-name to the list of completions.
#
# NOTE: We add a command only if it has a callback.
#
completions = []
for c in subtree_commands:
if c.callback is None:
continue
name = c.split_name[len(root_command.split_name):]
completions.append(' '.join(name))
mline = line.partition(" ")[2]
offs = len(mline) - len(text)
return [s[offs:] for s in completions if s.startswith(mline)]
#
# Implement the "help_something" top-level command help
#
def impl_help_command(self, root_name):
"Implementation of top-level 'help_something' command help"
root_command = self.commands_dict[root_name]
subtree_commands = self.collect_subtree_commands(root_command)
#
# Loop through the commands and print the help for each command.
# NOTE: We add a command only if it has a callback.
#
print "Help for the `%s` command:" % (root_name)
for c in subtree_commands:
if c.callback is None:
continue
print " {0:30}{1:30}".format(c.name, c.help)
# if c.init_arg_parser is not None:
# parser = self.parsers_dict[c.name]
# parser.print_help()
#
# Traverse (breadth-first) a subtree and return all nodes except the
# root node.
#
def collect_subtree_commands(self, root_command):
"""Collect a subtree of commands.
Traverses (breadth-first) a subtree of commands and returns
all nodes except the root node."""
commands = []
subtree_commands = []
commands.append(root_command)
# Use breadth-first to traverse the subtree
while commands:
pc = commands.pop(0)
for c in pc.children:
commands.append(c)
subtree_commands.append(c)
return subtree_commands
def log_debug(self, msg):
"""Log debug information.
msg: the message to log
Use the following CLI commands to enable/disable debugging:
paramset debug true
paramset debug false
"""
if self.debug:
print "%s" % (msg)
def print_json_result(self, json_result):
"""Print JSON result."""
if len(json_result) == 0:
return
result = json.dumps(json_result, indent=4)
self.print_result(result)
def print_result(self, result):
"""Print parsed result."""
print "%s" % (result)
#
# Implementation of the "paramshow" CLI command.
#
# NOTE: The do_paramshow implementation below is copied from
# the cmd2.do_show() implementation
#
@options([make_option('-l', '--long', action="store_true",
help="describe function of parameter")])
def do_paramshow(self, arg, opts):
'''Shows value of a parameter.'''
param = arg.strip().lower()
result = {}
maxlen = 0
for p in self.settable:
if (not param) or p.startswith(param):
result[p] = '%s: %s' % (p, str(getattr(self, p)))
maxlen = max(maxlen, len(result[p]))
if result:
for p in sorted(result):
if opts.long:
self.poutput('%s # %s' % (result[p].ljust(maxlen), self.settable[p]))
else:
self.poutput(result[p])
else:
raise NotImplementedError("Parameter '%s' not supported (type 'show' for list of parameters)." % param)
#
# Implementation of the "paramset" CLI command.
#
#
# NOTE: The do_paramset implementation below is copied from
# the cmd2.do_set() implementation (with minor modifications).
#
def do_paramset(self, arg):
'''
Sets a cmd2 parameter. Accepts abbreviated parameter names so long
as there is no ambiguity. Call without arguments for a list of
settable parameters with their values.'''
class NotSettableError(Exception):
pass
try:
statement, paramName, val = arg.parsed.raw.split(None, 2)
val = val.strip()
paramName = paramName.strip().lower()
if paramName not in self.settable:
hits = [p for p in self.settable if p.startswith(paramName)]
if len(hits) == 1:
paramName = hits[0]
else:
return self.do_paramshow(paramName)
currentVal = getattr(self, paramName)
if (val[0] == val[-1]) and val[0] in ("'", '"'):
val = val[1:-1]
else:
val = cmd2.cast(currentVal, val)
setattr(self, paramName, val)
self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val))
if currentVal != val:
try:
onchange_hook = getattr(self, '_onchange_%s' % paramName)
onchange_hook(old=currentVal, new=val)
except AttributeError:
pass
except (ValueError, AttributeError, NotSettableError) as exc:
self.do_paramshow(arg)
def get_json(url):
"""Make a REST GET call and return the JSON result
url: the URL to call"""
parsed_result = []
try:
response = urllib2.urlopen(url)
result = response.read()
response.close()
if len(result) != 0:
parsed_result = json.loads(result)
except HTTPError as exc:
print "ERROR:"
print " REST GET URL: %s" % url
# NOTE: exc.fp contains the object with the response payload
error_payload = json.loads(exc.fp.read())
print " REST Error Code: %s" % (error_payload['code'])
print " REST Error Summary: %s" % (error_payload['summary'])
print " REST Error Description: %s" % (error_payload['formattedDescription'])
print " HTTP Error Code: %s" % exc.code
print " HTTP Error Reason: %s" % exc.reason
except URLError as exc:
print "ERROR:"
print " REST GET URL: %s" % url
print " URL Error Reason: %s" % exc.reason
return parsed_result
def post_json(url, data):
"""Make a REST POST call and return the JSON result
url: the URL to call
data: the data to POST"""
parsed_result = []
data_json = json.dumps(data)
try:
request = urllib2.Request(url, data_json)
request.add_header("Content-Type", "application/json")
response = urllib2.urlopen(request)
result = response.read()
response.close()
if len(result) != 0:
parsed_result = json.loads(result)
except HTTPError as exc:
print "ERROR:"
print " REST POST URL: %s" % url
# NOTE: exc.fp contains the object with the response payload
error_payload = json.loads(exc.fp.read())
print " REST Error Code: %s" % (error_payload['code'])
print " REST Error Summary: %s" % (error_payload['summary'])
print " REST Error Description: %s" % (error_payload['formattedDescription'])
print " HTTP Error Code: %s" % exc.code
print " HTTP Error Reason: %s" % exc.reason
except URLError as exc:
print "ERROR:"
print " REST POST URL: %s" % url
print " URL Error Reason: %s" % exc.reason
return parsed_result
def delete_json(url):
"""Make a REST DELETE call and return the JSON result
url: the URL to call"""
parsed_result = []
try:
request = urllib2.Request(url)
request.get_method = lambda: 'DELETE'
response = urllib2.urlopen(request)
result = response.read()
response.close()
if len(result) != 0:
parsed_result = json.loads(result)
except HTTPError as exc:
print "ERROR:"
print " REST DELETE URL: %s" % url
# NOTE: exc.fp contains the object with the response payload
error_payload = json.loads(exc.fp.read())
print " REST Error Code: %s" % (error_payload['code'])
print " REST Error Summary: %s" % (error_payload['summary'])
print " REST Error Description: %s" % (error_payload['formattedDescription'])
print " HTTP Error Code: %s" % exc.code
print " HTTP Error Reason: %s" % exc.reason
except URLError as exc:
print "ERROR:"
print " REST DELETE URL: %s" % url
print " URL Error Reason: %s" % exc.reason
return parsed_result
if __name__ == '__main__':
onosCli = OnosCli()
# Setup the parser
parser = argparse.ArgumentParser()
parser.add_argument('-c', '--command', nargs=argparse.REMAINDER,
help="Run arguments to the end of the line as a CLI command")
parser.add_argument('--onos-ip',
help="Set the ONOS IP address (for REST calls)")
parser.add_argument('--onos-port',
help="Set the ONOS port number (for REST calls)")
parser.add_argument('-t', '--test', nargs='+',
help="Test against transcript(s) in FILE (wildcards OK)")
# Parse the arguments
parsed_args = parser.parse_args()
if parsed_args.onos_ip:
onosCli.onos_ip = parsed_args.onos_ip
if parsed_args.onos_port:
onosCli.onos_port = parsed_args.onos_port
#
# NOTE: We have to reset the command-line options so the Cmd2 parser
# doesn't process them again.
#
sys.argv = [sys.argv[0]]
# Run the CLI as appropriate
if parsed_args.test:
# Run CLI Transcript Tests
onosCli.runTranscriptTests(parsed_args.test)
elif parsed_args.command:
# Run arguments as a CLI command
command_line = ' '.join(parsed_args.command)
onosCli.onecmd(command_line)
else:
# Run interactive CLI
onosCli.cmdloop()