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abci: remove python examples 

## Description

remove unused and unmaintained python examples of abci

Closes: #XXX
pull/4830/head
Marko 4 years ago
committed by GitHub
parent
1af80b44fc
commit
cf4e056a33
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 0 additions and 1037 deletions
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  1. +0
    -1
      abci/example/js/.gitignore
  2. +0
    -1
      abci/example/js/README.md
  3. +0
    -0
      abci/example/python/abci/__init__.py
  4. +0
    -50
      abci/example/python/abci/msg.py
  5. +0
    -56
      abci/example/python/abci/reader.py
  6. +0
    -202
      abci/example/python/abci/server.py
  7. +0
    -115
      abci/example/python/abci/wire.py
  8. +0
    -82
      abci/example/python/app.py
  9. +0
    -0
      abci/example/python3/abci/__init__.py
  10. +0
    -50
      abci/example/python3/abci/msg.py
  11. +0
    -56
      abci/example/python3/abci/reader.py
  12. +0
    -196
      abci/example/python3/abci/server.py
  13. +0
    -119
      abci/example/python3/abci/wire.py
  14. +0
    -82
      abci/example/python3/app.py
  15. +0
    -27
      scripts/install-golangci-lint.sh

+ 0
- 1
abci/example/js/.gitignore View File

@ -1 +0,0 @@
node_modules

+ 0
- 1
abci/example/js/README.md View File

@ -1 +0,0 @@
This example has been moved here: https://github.com/tendermint/js-abci/tree/master/example

+ 0
- 0
abci/example/python/abci/__init__.py View File


+ 0
- 50
abci/example/python/abci/msg.py View File

@ -1,50 +0,0 @@
from wire import decode_string
# map type_byte to message name
message_types = {
0x01: "echo",
0x02: "flush",
0x03: "info",
0x04: "set_option",
0x21: "deliver_tx",
0x22: "check_tx",
0x23: "commit",
0x24: "add_listener",
0x25: "rm_listener",
}
# return the decoded arguments of abci messages
class RequestDecoder():
def __init__(self, reader):
self.reader = reader
def echo(self):
return decode_string(self.reader)
def flush(self):
return
def info(self):
return
def set_option(self):
return decode_string(self.reader), decode_string(self.reader)
def deliver_tx(self):
return decode_string(self.reader)
def check_tx(self):
return decode_string(self.reader)
def commit(self):
return
def add_listener(self):
# TODO
return
def rm_listener(self):
# TODO
return

+ 0
- 56
abci/example/python/abci/reader.py View File

@ -1,56 +0,0 @@
# Simple read() method around a bytearray
class BytesBuffer():
def __init__(self, b):
self.buf = b
self.readCount = 0
def count(self):
return self.readCount
def reset_count(self):
self.readCount = 0
def size(self):
return len(self.buf)
def peek(self):
return self.buf[0]
def write(self, b):
# b should be castable to byte array
self.buf += bytearray(b)
def read(self, n):
if len(self.buf) < n:
print "reader err: buf less than n"
# TODO: exception
return
self.readCount += n
r = self.buf[:n]
self.buf = self.buf[n:]
return r
# Buffer bytes off a tcp connection and read them off in chunks
class ConnReader():
def __init__(self, conn):
self.conn = conn
self.buf = bytearray()
# blocking
def read(self, n):
while n > len(self.buf):
moreBuf = self.conn.recv(1024)
if not moreBuf:
raise IOError("dead connection")
self.buf = self.buf + bytearray(moreBuf)
r = self.buf[:n]
self.buf = self.buf[n:]
return r

+ 0
- 202
abci/example/python/abci/server.py View File

@ -1,202 +0,0 @@
import socket
import select
import sys
from wire import decode_varint, encode
from reader import BytesBuffer
from msg import RequestDecoder, message_types
# hold the asyncronous state of a connection
# ie. we may not get enough bytes on one read to decode the message
class Connection():
def __init__(self, fd, app):
self.fd = fd
self.app = app
self.recBuf = BytesBuffer(bytearray())
self.resBuf = BytesBuffer(bytearray())
self.msgLength = 0
self.decoder = RequestDecoder(self.recBuf)
self.inProgress = False # are we in the middle of a message
def recv(this):
data = this.fd.recv(1024)
if not data: # what about len(data) == 0
raise IOError("dead connection")
this.recBuf.write(data)
# ABCI server responds to messges by calling methods on the app
class ABCIServer():
def __init__(self, app, port=5410):
self.app = app
# map conn file descriptors to (app, reqBuf, resBuf, msgDecoder)
self.appMap = {}
self.port = port
self.listen_backlog = 10
self.listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.listener.setblocking(0)
self.listener.bind(('', port))
self.listener.listen(self.listen_backlog)
self.shutdown = False
self.read_list = [self.listener]
self.write_list = []
def handle_new_connection(self, r):
new_fd, new_addr = r.accept()
new_fd.setblocking(0) # non-blocking
self.read_list.append(new_fd)
self.write_list.append(new_fd)
print 'new connection to', new_addr
self.appMap[new_fd] = Connection(new_fd, self.app)
def handle_conn_closed(self, r):
self.read_list.remove(r)
self.write_list.remove(r)
r.close()
print "connection closed"
def handle_recv(self, r):
# app, recBuf, resBuf, conn
conn = self.appMap[r]
while True:
try:
print "recv loop"
# check if we need more data first
if conn.inProgress:
if (conn.msgLength == 0 or conn.recBuf.size() < conn.msgLength):
conn.recv()
else:
if conn.recBuf.size() == 0:
conn.recv()
conn.inProgress = True
# see if we have enough to get the message length
if conn.msgLength == 0:
ll = conn.recBuf.peek()
if conn.recBuf.size() < 1 + ll:
# we don't have enough bytes to read the length yet
return
print "decoding msg length"
conn.msgLength = decode_varint(conn.recBuf)
# see if we have enough to decode the message
if conn.recBuf.size() < conn.msgLength:
return
# now we can decode the message
# first read the request type and get the particular msg
# decoder
typeByte = conn.recBuf.read(1)
typeByte = int(typeByte[0])
resTypeByte = typeByte + 0x10
req_type = message_types[typeByte]
if req_type == "flush":
# messages are length prefixed
conn.resBuf.write(encode(1))
conn.resBuf.write([resTypeByte])
conn.fd.send(str(conn.resBuf.buf))
conn.msgLength = 0
conn.inProgress = False
conn.resBuf = BytesBuffer(bytearray())
return
decoder = getattr(conn.decoder, req_type)
print "decoding args"
req_args = decoder()
print "got args", req_args
# done decoding message
conn.msgLength = 0
conn.inProgress = False
req_f = getattr(conn.app, req_type)
if req_args is None:
res = req_f()
elif isinstance(req_args, tuple):
res = req_f(*req_args)
else:
res = req_f(req_args)
if isinstance(res, tuple):
res, ret_code = res
else:
ret_code = res
res = None
print "called", req_type, "ret code:", ret_code
if ret_code != 0:
print "non-zero retcode:", ret_code
if req_type in ("echo", "info"): # these dont return a ret code
enc = encode(res)
# messages are length prefixed
conn.resBuf.write(encode(len(enc) + 1))
conn.resBuf.write([resTypeByte])
conn.resBuf.write(enc)
else:
enc, encRet = encode(res), encode(ret_code)
# messages are length prefixed
conn.resBuf.write(encode(len(enc) + len(encRet) + 1))
conn.resBuf.write([resTypeByte])
conn.resBuf.write(encRet)
conn.resBuf.write(enc)
except TypeError as e:
print "TypeError on reading from connection:", e
self.handle_conn_closed(r)
return
except ValueError as e:
print "ValueError on reading from connection:", e
self.handle_conn_closed(r)
return
except IOError as e:
print "IOError on reading from connection:", e
self.handle_conn_closed(r)
return
except Exception as e:
# sys.exc_info()[0] # TODO better
print "error reading from connection", str(e)
self.handle_conn_closed(r)
return
def main_loop(self):
while not self.shutdown:
r_list, w_list, _ = select.select(
self.read_list, self.write_list, [], 2.5)
for r in r_list:
if (r == self.listener):
try:
self.handle_new_connection(r)
# undo adding to read list ...
except NameError as e:
print "Could not connect due to NameError:", e
except TypeError as e:
print "Could not connect due to TypeError:", e
except:
print "Could not connect due to unexpected error:", sys.exc_info()[0]
else:
self.handle_recv(r)
def handle_shutdown(self):
for r in self.read_list:
r.close()
for w in self.write_list:
try:
w.close()
except Exception as e:
print(e) # TODO: add logging
self.shutdown = True

+ 0
- 115
abci/example/python/abci/wire.py View File

@ -1,115 +0,0 @@
# the decoder works off a reader
# the encoder returns bytearray
def hex2bytes(h):
return bytearray(h.decode('hex'))
def bytes2hex(b):
if type(b) in (str, unicode):
return "".join([hex(ord(c))[2:].zfill(2) for c in b])
else:
return bytes2hex(b.decode())
# expects uvarint64 (no crazy big nums!)
def uvarint_size(i):
if i == 0:
return 0
for j in xrange(1, 8):
if i < 1 << j * 8:
return j
return 8
# expects i < 2**size
def encode_big_endian(i, size):
if size == 0:
return bytearray()
return encode_big_endian(i / 256, size - 1) + bytearray([i % 256])
def decode_big_endian(reader, size):
if size == 0:
return 0
firstByte = reader.read(1)[0]
return firstByte * (256 ** (size - 1)) + decode_big_endian(reader, size - 1)
# ints are max 16 bytes long
def encode_varint(i):
negate = False
if i < 0:
negate = True
i = -i
size = uvarint_size(i)
if size == 0:
return bytearray([0])
big_end = encode_big_endian(i, size)
if negate:
size += 0xF0
return bytearray([size]) + big_end
# returns the int and whats left of the byte array
def decode_varint(reader):
size = reader.read(1)[0]
if size == 0:
return 0
negate = True if size > int(0xF0) else False
if negate:
size = size - 0xF0
i = decode_big_endian(reader, size)
if negate:
i = i * (-1)
return i
def encode_string(s):
size = encode_varint(len(s))
return size + bytearray(s)
def decode_string(reader):
length = decode_varint(reader)
return str(reader.read(length))
def encode_list(s):
b = bytearray()
map(b.extend, map(encode, s))
return encode_varint(len(s)) + b
def encode(s):
if s is None:
return bytearray()
if isinstance(s, int):
return encode_varint(s)
elif isinstance(s, str):
return encode_string(s)
elif isinstance(s, list):
return encode_list(s)
else:
print "UNSUPPORTED TYPE!", type(s), s
if __name__ == '__main__':
ns = [100, 100, 1000, 256]
ss = [2, 5, 5, 2]
bs = map(encode_big_endian, ns, ss)
ds = map(decode_big_endian, bs, ss)
print ns
print [i[0] for i in ds]
ss = ["abc", "hi there jim", "ok now what"]
e = map(encode_string, ss)
d = map(decode_string, e)
print ss
print [i[0] for i in d]

+ 0
- 82
abci/example/python/app.py View File

@ -1,82 +0,0 @@
import sys
from abci.wire import hex2bytes, decode_big_endian, encode_big_endian
from abci.server import ABCIServer
from abci.reader import BytesBuffer
class CounterApplication():
def __init__(self):
sys.exit("The python example is out of date. Upgrading the Python examples is currently left as an exercise to you.")
self.hashCount = 0
self.txCount = 0
self.serial = False
def echo(self, msg):
return msg, 0
def info(self):
return ["hashes:%d, txs:%d" % (self.hashCount, self.txCount)], 0
def set_option(self, key, value):
if key == "serial" and value == "on":
self.serial = True
return 0
def deliver_tx(self, txBytes):
if self.serial:
txByteArray = bytearray(txBytes)
if len(txBytes) >= 2 and txBytes[:2] == "0x":
txByteArray = hex2bytes(txBytes[2:])
txValue = decode_big_endian(
BytesBuffer(txByteArray), len(txBytes))
if txValue != self.txCount:
return None, 6
self.txCount += 1
return None, 0
def check_tx(self, txBytes):
if self.serial:
txByteArray = bytearray(txBytes)
if len(txBytes) >= 2 and txBytes[:2] == "0x":
txByteArray = hex2bytes(txBytes[2:])
txValue = decode_big_endian(
BytesBuffer(txByteArray), len(txBytes))
if txValue < self.txCount:
return 6
return 0
def commit(self):
self.hashCount += 1
if self.txCount == 0:
return "", 0
h = encode_big_endian(self.txCount, 8)
h.reverse()
return str(h), 0
def add_listener(self):
return 0
def rm_listener(self):
return 0
def event(self):
return
if __name__ == '__main__':
l = len(sys.argv)
if l == 1:
port = 26658
elif l == 2:
port = int(sys.argv[1])
else:
print "too many arguments"
quit()
print 'ABCI Demo APP (Python)'
app = CounterApplication()
server = ABCIServer(app, port)
server.main_loop()

+ 0
- 0
abci/example/python3/abci/__init__.py View File


+ 0
- 50
abci/example/python3/abci/msg.py View File

@ -1,50 +0,0 @@
from .wire import decode_string
# map type_byte to message name
message_types = {
0x01: "echo",
0x02: "flush",
0x03: "info",
0x04: "set_option",
0x21: "deliver_tx",
0x22: "check_tx",
0x23: "commit",
0x24: "add_listener",
0x25: "rm_listener",
}
# return the decoded arguments of abci messages
class RequestDecoder():
def __init__(self, reader):
self.reader = reader
def echo(self):
return decode_string(self.reader)
def flush(self):
return
def info(self):
return
def set_option(self):
return decode_string(self.reader), decode_string(self.reader)
def deliver_tx(self):
return decode_string(self.reader)
def check_tx(self):
return decode_string(self.reader)
def commit(self):
return
def add_listener(self):
# TODO
return
def rm_listener(self):
# TODO
return

+ 0
- 56
abci/example/python3/abci/reader.py View File

@ -1,56 +0,0 @@
# Simple read() method around a bytearray
class BytesBuffer():
def __init__(self, b):
self.buf = b
self.readCount = 0
def count(self):
return self.readCount
def reset_count(self):
self.readCount = 0
def size(self):
return len(self.buf)
def peek(self):
return self.buf[0]
def write(self, b):
# b should be castable to byte array
self.buf += bytearray(b)
def read(self, n):
if len(self.buf) < n:
print("reader err: buf less than n")
# TODO: exception
return
self.readCount += n
r = self.buf[:n]
self.buf = self.buf[n:]
return r
# Buffer bytes off a tcp connection and read them off in chunks
class ConnReader():
def __init__(self, conn):
self.conn = conn
self.buf = bytearray()
# blocking
def read(self, n):
while n > len(self.buf):
moreBuf = self.conn.recv(1024)
if not moreBuf:
raise IOError("dead connection")
self.buf = self.buf + bytearray(moreBuf)
r = self.buf[:n]
self.buf = self.buf[n:]
return r

+ 0
- 196
abci/example/python3/abci/server.py View File

@ -1,196 +0,0 @@
import socket
import select
import sys
import logging
from .wire import decode_varint, encode
from .reader import BytesBuffer
from .msg import RequestDecoder, message_types
# hold the asyncronous state of a connection
# ie. we may not get enough bytes on one read to decode the message
logger = logging.getLogger(__name__)
class Connection():
def __init__(self, fd, app):
self.fd = fd
self.app = app
self.recBuf = BytesBuffer(bytearray())
self.resBuf = BytesBuffer(bytearray())
self.msgLength = 0
self.decoder = RequestDecoder(self.recBuf)
self.inProgress = False # are we in the middle of a message
def recv(this):
data = this.fd.recv(1024)
if not data: # what about len(data) == 0
raise IOError("dead connection")
this.recBuf.write(data)
# ABCI server responds to messges by calling methods on the app
class ABCIServer():
def __init__(self, app, port=5410):
self.app = app
# map conn file descriptors to (app, reqBuf, resBuf, msgDecoder)
self.appMap = {}
self.port = port
self.listen_backlog = 10
self.listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.listener.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.listener.setblocking(0)
self.listener.bind(('', port))
self.listener.listen(self.listen_backlog)
self.shutdown = False
self.read_list = [self.listener]
self.write_list = []
def handle_new_connection(self, r):
new_fd, new_addr = r.accept()
new_fd.setblocking(0) # non-blocking
self.read_list.append(new_fd)
self.write_list.append(new_fd)
print('new connection to', new_addr)
self.appMap[new_fd] = Connection(new_fd, self.app)
def handle_conn_closed(self, r):
self.read_list.remove(r)
self.write_list.remove(r)
r.close()
print("connection closed")
def handle_recv(self, r):
# app, recBuf, resBuf, conn
conn = self.appMap[r]
while True:
try:
print("recv loop")
# check if we need more data first
if conn.inProgress:
if (conn.msgLength == 0 or conn.recBuf.size() < conn.msgLength):
conn.recv()
else:
if conn.recBuf.size() == 0:
conn.recv()
conn.inProgress = True
# see if we have enough to get the message length
if conn.msgLength == 0:
ll = conn.recBuf.peek()
if conn.recBuf.size() < 1 + ll:
# we don't have enough bytes to read the length yet
return
print("decoding msg length")
conn.msgLength = decode_varint(conn.recBuf)
# see if we have enough to decode the message
if conn.recBuf.size() < conn.msgLength:
return
# now we can decode the message
# first read the request type and get the particular msg
# decoder
typeByte = conn.recBuf.read(1)
typeByte = int(typeByte[0])
resTypeByte = typeByte + 0x10
req_type = message_types[typeByte]
if req_type == "flush":
# messages are length prefixed
conn.resBuf.write(encode(1))
conn.resBuf.write([resTypeByte])
conn.fd.send(conn.resBuf.buf)
conn.msgLength = 0
conn.inProgress = False
conn.resBuf = BytesBuffer(bytearray())
return
decoder = getattr(conn.decoder, req_type)
print("decoding args")
req_args = decoder()
print("got args", req_args)
# done decoding message
conn.msgLength = 0
conn.inProgress = False
req_f = getattr(conn.app, req_type)
if req_args is None:
res = req_f()
elif isinstance(req_args, tuple):
res = req_f(*req_args)
else:
res = req_f(req_args)
if isinstance(res, tuple):
res, ret_code = res
else:
ret_code = res
res = None
print("called", req_type, "ret code:", ret_code, 'res:', res)
if ret_code != 0:
print("non-zero retcode:", ret_code)
if req_type in ("echo", "info"): # these dont return a ret code
enc = encode(res)
# messages are length prefixed
conn.resBuf.write(encode(len(enc) + 1))
conn.resBuf.write([resTypeByte])
conn.resBuf.write(enc)
else:
enc, encRet = encode(res), encode(ret_code)
# messages are length prefixed
conn.resBuf.write(encode(len(enc) + len(encRet) + 1))
conn.resBuf.write([resTypeByte])
conn.resBuf.write(encRet)
conn.resBuf.write(enc)
except IOError as e:
print("IOError on reading from connection:", e)
self.handle_conn_closed(r)
return
except Exception as e:
logger.exception("error reading from connection")
self.handle_conn_closed(r)
return
def main_loop(self):
while not self.shutdown:
r_list, w_list, _ = select.select(
self.read_list, self.write_list, [], 2.5)
for r in r_list:
if (r == self.listener):
try:
self.handle_new_connection(r)
# undo adding to read list ...
except NameError as e:
print("Could not connect due to NameError:", e)
except TypeError as e:
print("Could not connect due to TypeError:", e)
except:
print("Could not connect due to unexpected error:", sys.exc_info()[0])
else:
self.handle_recv(r)
def handle_shutdown(self):
for r in self.read_list:
r.close()
for w in self.write_list:
try:
w.close()
except Exception as e:
print(e) # TODO: add logging
self.shutdown = True

+ 0
- 119
abci/example/python3/abci/wire.py View File

@ -1,119 +0,0 @@
# the decoder works off a reader
# the encoder returns bytearray
def hex2bytes(h):
return bytearray(h.decode('hex'))
def bytes2hex(b):
if type(b) in (str, str):
return "".join([hex(ord(c))[2:].zfill(2) for c in b])
else:
return bytes2hex(b.decode())
# expects uvarint64 (no crazy big nums!)
def uvarint_size(i):
if i == 0:
return 0
for j in range(1, 8):
if i < 1 << j * 8:
return j
return 8
# expects i < 2**size
def encode_big_endian(i, size):
if size == 0:
return bytearray()
return encode_big_endian(i // 256, size - 1) + bytearray([i % 256])
def decode_big_endian(reader, size):
if size == 0:
return 0
firstByte = reader.read(1)[0]
return firstByte * (256 ** (size - 1)) + decode_big_endian(reader, size - 1)
# ints are max 16 bytes long
def encode_varint(i):
negate = False
if i < 0:
negate = True
i = -i
size = uvarint_size(i)
if size == 0:
return bytearray([0])
big_end = encode_big_endian(i, size)
if negate:
size += 0xF0
return bytearray([size]) + big_end
# returns the int and whats left of the byte array
def decode_varint(reader):
size = reader.read(1)[0]
if size == 0:
return 0
negate = True if size > int(0xF0) else False
if negate:
size = size - 0xF0
i = decode_big_endian(reader, size)
if negate:
i = i * (-1)
return i
def encode_string(s):
size = encode_varint(len(s))
return size + bytearray(s, 'utf8')
def decode_string(reader):
length = decode_varint(reader)
raw_data = reader.read(length)
return raw_data.decode()
def encode_list(s):
b = bytearray()
list(map(b.extend, list(map(encode, s))))
return encode_varint(len(s)) + b
def encode(s):
print('encoding', repr(s))
if s is None:
return bytearray()
if isinstance(s, int):
return encode_varint(s)
elif isinstance(s, str):
return encode_string(s)
elif isinstance(s, list):
return encode_list(s)
elif isinstance(s, bytearray):
return encode_string(s)
else:
print("UNSUPPORTED TYPE!", type(s), s)
if __name__ == '__main__':
ns = [100, 100, 1000, 256]
ss = [2, 5, 5, 2]
bs = list(map(encode_big_endian, ns, ss))
ds = list(map(decode_big_endian, bs, ss))
print(ns)
print([i[0] for i in ds])
ss = ["abc", "hi there jim", "ok now what"]
e = list(map(encode_string, ss))
d = list(map(decode_string, e))
print(ss)
print([i[0] for i in d])

+ 0
- 82
abci/example/python3/app.py View File

@ -1,82 +0,0 @@
import sys
from abci.wire import hex2bytes, decode_big_endian, encode_big_endian
from abci.server import ABCIServer
from abci.reader import BytesBuffer
class CounterApplication():
def __init__(self):
sys.exit("The python example is out of date. Upgrading the Python examples is currently left as an exercise to you.")
self.hashCount = 0
self.txCount = 0
self.serial = False
def echo(self, msg):
return msg, 0
def info(self):
return ["hashes:%d, txs:%d" % (self.hashCount, self.txCount)], 0
def set_option(self, key, value):
if key == "serial" and value == "on":
self.serial = True
return 0
def deliver_tx(self, txBytes):
if self.serial:
txByteArray = bytearray(txBytes)
if len(txBytes) >= 2 and txBytes[:2] == "0x":
txByteArray = hex2bytes(txBytes[2:])
txValue = decode_big_endian(
BytesBuffer(txByteArray), len(txBytes))
if txValue != self.txCount:
return None, 6
self.txCount += 1
return None, 0
def check_tx(self, txBytes):
if self.serial:
txByteArray = bytearray(txBytes)
if len(txBytes) >= 2 and txBytes[:2] == "0x":
txByteArray = hex2bytes(txBytes[2:])
txValue = decode_big_endian(
BytesBuffer(txByteArray), len(txBytes))
if txValue < self.txCount:
return 6
return 0
def commit(self):
self.hashCount += 1
if self.txCount == 0:
return "", 0
h = encode_big_endian(self.txCount, 8)
h.reverse()
return h.decode(), 0
def add_listener(self):
return 0
def rm_listener(self):
return 0
def event(self):
return
if __name__ == '__main__':
l = len(sys.argv)
if l == 1:
port = 26658
elif l == 2:
port = int(sys.argv[1])
else:
print("too many arguments")
quit()
print('ABCI Demo APP (Python)')
app = CounterApplication()
server = ABCIServer(app, port)
server.main_loop()

+ 0
- 27
scripts/install-golangci-lint.sh View File

@ -1,27 +0,0 @@
#!/bin/bash
set -euo pipefail
f_sha256() {
local l_file
l_file=$1
python -sBc "import hashlib;print(hashlib.sha256(open('$l_file','rb').read()).hexdigest())"
}
installer="$(mktemp)"
trap "rm -f ${installer}" EXIT
GOBIN="${1}"
VERSION="${2}"
HASHSUM="${3}"
CURL="$(which curl)"
echo "Downloading golangci-lint ${VERSION} installer ..." >&2
"${CURL}" -sfL "https://raw.githubusercontent.com/golangci/golangci-lint/${VERSION}/install.sh" > "${installer}"
echo "Checking hashsum ..." >&2
[ "${HASHSUM}" = "$(f_sha256 ${installer})" ]
chmod +x "${installer}"
echo "Launching installer ..." >&2
exec "${installer}" -d -b "${GOBIN}" "${VERSION}"

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