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generate.py
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#!/usr/bin/env python3
# quick-and-dirty script to generate haproxy.cson from haproxy docs
import argparse
from itertools import chain
def get_data_from_global(lines):
keywords = []
started = False
for line in lines:
if line.startswith("3. Global parameters"):
started = True
continue
if line.startswith("3.1. Process management and security"):
break
if started:
stripped = line.strip()
if stripped.startswith("- "):
keywords.append(stripped.lstrip("- "))
return keywords
def get_data_from_userlists(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("3.4. Userlists"):
found_paragraph = True
continue
if line.startswith("3.5. Peers"):
break
if found_paragraph:
if line.startswith("userlist <listname>"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keywords.append(stripped.split()[0])
return keywords
def get_data_from_peers(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("3.5. Peers"):
found_paragraph = True
continue
if line.startswith("3.6. Mailers"):
break
if found_paragraph:
if line.startswith("peers <peersect>"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keywords.append(stripped.split()[0])
return keywords
def get_data_from_mailers(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("3.6. Mailers"):
found_paragraph = True
continue
if line.startswith("3.7. Programs"):
break
if found_paragraph:
if line.startswith("mailers <mailersect>"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keywords.append(stripped.split()[0])
return keywords
def get_data_from_programs(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("3.7. Programs"):
found_paragraph = True
continue
if line.startswith("4. Proxies"):
break
if found_paragraph:
if line.startswith("program <name>"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keywords.append(stripped.split()[0])
return keywords
def get_data_from_resolvers(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("5.3.2. The resolvers section"):
found_paragraph = True
continue
if line.startswith("6. HTTP header manipulation"):
break
if line.startswith("A resolvers section accept the following parameters:"):
continue
if found_paragraph:
if line.startswith("resolvers <resolvers id>"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keywords.append(stripped.split()[0])
return keywords
def get_data_from_table(lines):
keywords = []
double = []
next_words = ["(deprecated)", "(*)", "-", "X"]
started = False
for line in lines:
if line.startswith("4.1. Proxy keywords matrix"):
started = True
continue
if line.startswith("4.2. Alphabetically sorted keywords reference"):
break
if started:
splitted = line.split()
if len(splitted) < 3:
continue
if splitted[1] in next_words:
keywords.append(splitted[0])
elif splitted[2] in next_words:
double.append(splitted[0] + " " + splitted[1])
return keywords, double
def get_data_from_bind(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("5.1. Bind options"):
found_paragraph = True
continue
if found_paragraph:
if line.startswith("The currently supported settings are the following ones"):
started = True
continue
if line.startswith("5.2"):
break
if started:
stripped = line.strip()
if not line.startswith(" "):
if stripped:
keywords.append(stripped.split()[0])
return keywords
def get_data_from_server(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("5.2. Server and default-server options"):
found_paragraph = True
continue
if found_paragraph:
if line.startswith("The currently supported settings are the following ones"):
started = True
continue
if line.startswith("5.3"):
break
if started:
stripped = line.strip()
if not line.startswith(" "):
if stripped:
keywords.append(stripped.split()[0])
return keywords
def get_data_from_converters(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.1. Converters"):
found_paragraph = True
continue
if line.startswith("7.3.2. Fetching samples from internal states"):
break
if found_paragraph:
if line.startswith("51d.single"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_fetches_internal_state(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.2. Fetching samples from internal states"):
found_paragraph = True
continue
if line.startswith("7.3.3. Fetching samples at Layer 4"):
break
if found_paragraph:
if line.startswith("always_false"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_fetches_layer4(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.3. Fetching samples at Layer 4"):
found_paragraph = True
continue
if line.startswith("7.3.4. Fetching samples at Layer 5"):
break
if found_paragraph:
if line.startswith("bc_http_major"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_fetches_layer5(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.4. Fetching samples at Layer 5"):
found_paragraph = True
continue
if line.startswith("7.3.5. Fetching samples from buffer contents"):
break
if found_paragraph:
if line.startswith("51d.all"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_fetches_layer6(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.5. Fetching samples from buffer contents"):
found_paragraph = True
continue
if line.startswith("7.3.6. Fetching HTTP sample"):
break
if found_paragraph:
if line.startswith("payload"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_fetches_layer7(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("7.3.6. Fetching HTTP sample"):
found_paragraph = True
continue
if line.startswith("7.4. Pre-defined ACLs"):
break
if found_paragraph:
if line.startswith("base"):
started = True
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[0] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_http_request(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("http-request <action>"):
found_paragraph = True
continue
if found_paragraph:
if line.startswith("http-request"):
started = True
if line.startswith("http-response <action>"):
break
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[1] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def get_data_from_http_response(lines):
keywords = []
found_paragraph = False
started = False
for line in lines:
if line.startswith("http-response <action>"):
found_paragraph = True
continue
if found_paragraph:
if line.startswith("http-response"):
started = True
if line.startswith("http-reuse"):
break
if started:
stripped = line.strip()
if stripped and not line.startswith(" "):
keyword = stripped.split()[1] # split by space
keywords.append(keyword.split('(')[0]) # split by opening parentheses
return keywords
def parse_doubles(double):
m = dict()
for d in double:
splitted = d.split()
if splitted[0] in m:
m[splitted[0]].append(splitted[1])
else:
m[splitted[0]] = [splitted[1]]
return m
def main():
parser = argparse.ArgumentParser(description='Generate HAProxy grammars for Atom.')
parser.add_argument('-o', '--out', dest='out',
default="haproxy.cson",
help='write grammars to this file')
parser.add_argument('-t', '--template', dest='template',
default="haproxy.cson.template",
help='grammars template file')
parser.add_argument('-d', '--docs', dest='docs',
default="configuration.txt",
help='HAProxy docs file')
args = parser.parse_args()
with open(args.docs, "r") as f:
lines = f.readlines()
keywords, double = get_data_from_table(lines)
global_keywords = get_data_from_global(lines)
double_params = parse_doubles(double)
keywords.sort()
global_keywords.sort()
userlists_options = list(set(get_data_from_userlists(lines)))
userlists_options.sort()
peers_options = list(set(get_data_from_peers(lines)))
peers_options.sort()
mailers_options = list(set(get_data_from_mailers(lines)))
mailers_options.sort()
programs_options = list(set(get_data_from_programs(lines)))
programs_options.sort()
resolvers_options = list(set(get_data_from_resolvers(lines)))
resolvers_options.sort()
double_first = list(set(double_params.keys()))
double_first.sort()
double_second = list(set(chain.from_iterable(double_params.values())))
double_second.sort()
bind_options = list(set(get_data_from_bind(lines)))
bind_options.sort()
server_options = list(set(get_data_from_server(lines)))
server_options.sort()
http_request_options = list(set(get_data_from_http_request(lines)))
http_request_options.sort()
http_response_options = list(set(get_data_from_http_response(lines)))
http_response_options.sort()
converters = list(set(get_data_from_converters(lines)))
converters.sort()
internal_state_fetches = list(set(get_data_from_fetches_internal_state(lines)))
internal_state_fetches.sort()
layer4_fetches = list(set(get_data_from_fetches_layer4(lines)))
layer4_fetches.sort()
layer5_fetches = list(set(get_data_from_fetches_layer5(lines)))
layer5_fetches.sort()
layer6_fetches = list(set(get_data_from_fetches_layer6(lines)))
layer6_fetches.sort()
layer7_fetches = list(set(get_data_from_fetches_layer7(lines)))
layer7_fetches.sort()
keywords_string = r"^\\s*({0})\\b".format("|".join(keywords))
global_keywords_string = r"^\\s*({0})\\b".format("|".join(global_keywords))
double_first_string = r"^\\s*({0})\\b".format("|".join(double_first))
double_second_string = r"\\s+({0})(?=\\s+|$)".format("|".join(double_second))
server_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(server_options))
http_request_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(http_request_options))
http_response_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(http_response_options))
bind_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(bind_options))
mailers_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(mailers_options))
userlists_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(userlists_options))
peers_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(peers_options))
programs_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(programs_options))
resolvers_options_string = r"\\s+({0})(?=\\s+|$)".format("|".join(resolvers_options))
converters_string = r"\\s+({0})(?=\\s+|$)".format("|".join(converters))
internal_state_fetches_string = r"\\s+({0})(?=\\s+|$)".format("|".join(internal_state_fetches))
layer4_fetches_string = r"\\s+({0})(?=\\s+|$)".format("|".join(layer4_fetches))
layer5_fetches_string = r"\\s+({0})(?=\\s+|$)".format("|".join(layer5_fetches))
layer6_fetches_string = r"\\s+({0})(?=\\s+|$)".format("|".join(layer6_fetches))
layer7_fetches_string = r"\\s+({0})(?=\\s+|$)".format("|".join(layer7_fetches))
with open(args.template, "r") as f:
template = f.read()
output = template \
.replace("{keywords}", keywords_string) \
.replace("{global_keywords}", global_keywords_string) \
.replace("{double_first}", double_first_string) \
.replace("{double_second}", double_second_string) \
.replace("{server_options}", server_options_string) \
.replace("{http_request_options}", http_request_options_string) \
.replace("{http_response_options}", http_response_options_string) \
.replace("{bind_options}", bind_options_string) \
.replace("{mailers_options}", mailers_options_string) \
.replace("{userlists_options}", userlists_options_string) \
.replace("{peers_options}", peers_options_string) \
.replace("{programs_options}", programs_options_string) \
.replace("{resolvers_options}", resolvers_options_string) \
.replace("{converters}", converters_string) \
.replace("{internal_state_fetches}", internal_state_fetches_string) \
.replace("{layer4_fetches}", layer4_fetches_string) \
.replace("{layer5_fetches}", layer5_fetches_string) \
.replace("{layer6_fetches}", layer6_fetches_string) \
.replace("{layer7_fetches}", layer7_fetches_string)
with open(args.out, "w") as f:
f.write(output)
if __name__ == "__main__":
main()