add python binding

This commit is contained in:
Jack Robison 2017-11-08 22:01:32 -05:00
parent 1f23a260ae
commit 8aaa786512
No known key found for this signature in database
GPG key ID: 284699E7404E3CFF
4 changed files with 116 additions and 1 deletions

2
.gitignore vendored
View file

@ -1,2 +1,4 @@
.idea/
lbryschema-cli
lbryschema-python-binding.h
lbryschema-python-binding.so

View file

@ -0,0 +1,21 @@
package main
import (
"C"
"../claim"
)
//export VerifySignature
func VerifySignature(claimHex string, certificateHex string, claimAddress string, certificateId string) (bool) {
decodedClaim, err := claim.DecodeClaimHex(claimHex)
if err != nil {
return false
}
decodedCertificate, err := claim.DecodeClaimHex(certificateHex)
result, err := decodedClaim.ValidateClaimSignature(decodedCertificate, claimAddress, certificateId)
if err != nil {
return false
}
return result
}
func main() {}

View file

@ -6,3 +6,4 @@ rm -rf pb/*.pb.go
protoc --go_out=. pb/*.proto
go build ./...
go build ./cli/lbryschema-cli.go
go build -o lbryschema-python-binding.so -buildmode=c-shared ./binding/lbryschema-python-binding.go

91
test_binding.py Normal file
View file

@ -0,0 +1,91 @@
from ctypes import *
class _GoString(Structure):
_fields_ = [
("p", c_char_p),
("n", c_longlong)
]
def GoString(s):
if not isinstance(s, (str, unicode)):
raise TypeError("invalid type: %s" % str(type(s)))
x = str(s)
return _GoString(x, len(x))
def GoBinding(library, *argTypes):
"""
Get a binding to a go function of the same name in the given .so
The python function itself is not run, and can return or pass
:param argTypes: *parameter types
"""
lib = cdll.LoadLibrary(library)
def inner(fn):
_types = {
str: _GoString
}
_getters = {
str: GoString
}
for v in argTypes:
if not isinstance(v, type):
raise TypeError("invalid argument type")
if v not in _types:
raise TypeError("type does not have a mapping: %s" % str(type(v)))
_go_func = getattr(lib, fn.__name__)
_go_func.argtypes = [_types[v] for v in argTypes]
def _wrap(*args):
_args = [_getters[arg_type](arg) for arg_type, arg in zip(argTypes, args)]
return _go_func(*tuple(_args))
return _wrap
return inner
@GoBinding("./lbryschema-python-binding.so", str, str, str, str)
def VerifySignature(claim, certificate, claim_address, certificate_id):
pass
cert_claim_hex = "08011002225e0801100322583056301006072a8648ce3d020106052b8104000a03420004d015365a40f3e5c03c87227168e5851f44659837bcf6a3398ae633bc37d04ee19baeb26dc888003bd728146dbea39f5344bf8c52cedaf1a3a1623a0166f4a367"
signed_claim_hex = "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"
claim_addr = "bSkUov7HMWpYBiXackDwRnR5ishhGHvtJt"
cert_id = "251305ca93d4dbedb50dceb282ebcb7b07b7ac65"
import time
from lbryschema.decode import smart_decode
cd = smart_decode(signed_claim_hex)
certd = smart_decode(cert_claim_hex)
def clock_lbryschema_python(n=10.0):
start = time.time()
for i in range(int(n)):
assert cd.validate_signature(claim_addr, certd)
if i % 10 == 0:
print i
avg = float(time.time() - start) / n
return 1.0 / avg
def clock_lbryschema_go(n=100.0):
start = time.time()
for i in range(int(n)):
assert VerifySignature(signed_claim_hex, cert_claim_hex, claim_addr, cert_id)
if i % 10 == 0:
print i
avg = float(time.time() - start) / n
return 1.0 / avg
print "Start"
print "%f validations / second with python" % clock_lbryschema_python()
print "%f validations / second with go binding" % clock_lbryschema_go()