| #!/usr/bin/env python2.7 |
| |
| # Copyright 2015-2016, Google Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| import hashlib |
| import itertools |
| import os |
| import sys |
| |
| # configuration: a list of either strings or 2-tuples of strings |
| # a single string represents a static grpc_mdstr |
| # a 2-tuple represents a static grpc_mdelem (and appropriate grpc_mdstrs will |
| # also be created) |
| |
| CONFIG = [ |
| 'grpc-timeout', |
| 'grpc-internal-encoding-request', |
| ':path', |
| 'grpc-encoding', |
| 'grpc-accept-encoding', |
| 'user-agent', |
| ':authority', |
| 'host', |
| 'grpc-message', |
| 'grpc-status', |
| 'census-bin', |
| 'census-binary-bin', |
| '', |
| ('grpc-status', '0'), |
| ('grpc-status', '1'), |
| ('grpc-status', '2'), |
| ('grpc-encoding', 'identity'), |
| ('grpc-encoding', 'gzip'), |
| ('grpc-encoding', 'deflate'), |
| ('te', 'trailers'), |
| ('content-type', 'application/grpc'), |
| (':method', 'POST'), |
| (':status', '200'), |
| (':status', '404'), |
| (':scheme', 'http'), |
| (':scheme', 'https'), |
| (':scheme', 'grpc'), |
| (':authority', ''), |
| (':method', 'GET'), |
| (':method', 'PUT'), |
| (':path', '/'), |
| (':path', '/index.html'), |
| (':status', '204'), |
| (':status', '206'), |
| (':status', '304'), |
| (':status', '400'), |
| (':status', '500'), |
| ('accept-charset', ''), |
| ('accept-encoding', ''), |
| ('accept-encoding', 'gzip, deflate'), |
| ('accept-language', ''), |
| ('accept-ranges', ''), |
| ('accept', ''), |
| ('access-control-allow-origin', ''), |
| ('age', ''), |
| ('allow', ''), |
| ('authorization', ''), |
| ('cache-control', ''), |
| ('content-disposition', ''), |
| ('content-encoding', ''), |
| ('content-language', ''), |
| ('content-length', ''), |
| ('content-location', ''), |
| ('content-range', ''), |
| ('content-type', ''), |
| ('cookie', ''), |
| ('date', ''), |
| ('etag', ''), |
| ('expect', ''), |
| ('expires', ''), |
| ('from', ''), |
| ('host', ''), |
| ('if-match', ''), |
| ('if-modified-since', ''), |
| ('if-none-match', ''), |
| ('if-range', ''), |
| ('if-unmodified-since', ''), |
| ('last-modified', ''), |
| ('link', ''), |
| ('location', ''), |
| ('max-forwards', ''), |
| ('proxy-authenticate', ''), |
| ('proxy-authorization', ''), |
| ('range', ''), |
| ('referer', ''), |
| ('refresh', ''), |
| ('retry-after', ''), |
| ('server', ''), |
| ('set-cookie', ''), |
| ('strict-transport-security', ''), |
| ('transfer-encoding', ''), |
| ('user-agent', ''), |
| ('vary', ''), |
| ('via', ''), |
| ('www-authenticate', ''), |
| ] |
| |
| COMPRESSION_ALGORITHMS = [ |
| 'identity', |
| 'deflate', |
| 'gzip', |
| ] |
| |
| # utility: mangle the name of a config |
| def mangle(elem): |
| xl = { |
| '-': '_', |
| ':': '', |
| '/': 'slash', |
| '.': 'dot', |
| ',': 'comma', |
| ' ': '_', |
| } |
| def m0(x): |
| if not x: return 'empty' |
| r = '' |
| for c in x: |
| put = xl.get(c, c.lower()) |
| if not put: continue |
| last_is_underscore = r[-1] == '_' if r else True |
| if last_is_underscore and put == '_': continue |
| elif len(put) > 1: |
| if not last_is_underscore: r += '_' |
| r += put |
| r += '_' |
| else: |
| r += put |
| if r[-1] == '_': r = r[:-1] |
| return r |
| if isinstance(elem, tuple): |
| return 'grpc_mdelem_%s_%s' % (m0(elem[0]), m0(elem[1])) |
| else: |
| return 'grpc_mdstr_%s' % (m0(elem)) |
| |
| # utility: generate some hash value for a string |
| def fake_hash(elem): |
| return hashlib.md5(elem).hexdigest()[0:8] |
| |
| # utility: print a big comment block into a set of files |
| def put_banner(files, banner): |
| for f in files: |
| print >>f, '/*' |
| for line in banner: |
| print >>f, ' * %s' % line |
| print >>f, ' */' |
| print >>f |
| |
| # build a list of all the strings we need |
| all_strs = set() |
| all_elems = set() |
| static_userdata = {} |
| for elem in CONFIG: |
| if isinstance(elem, tuple): |
| all_strs.add(elem[0]) |
| all_strs.add(elem[1]) |
| all_elems.add(elem) |
| else: |
| all_strs.add(elem) |
| compression_elems = [] |
| for mask in range(1, 1<<len(COMPRESSION_ALGORITHMS)): |
| val = ','.join(COMPRESSION_ALGORITHMS[alg] |
| for alg in range(0, len(COMPRESSION_ALGORITHMS)) |
| if (1 << alg) & mask) |
| elem = ('grpc-accept-encoding', val) |
| all_strs.add(val) |
| all_elems.add(elem) |
| compression_elems.append(elem) |
| static_userdata[elem] = 1 + (mask | 1) |
| all_strs = sorted(list(all_strs), key=mangle) |
| all_elems = sorted(list(all_elems), key=mangle) |
| |
| # output configuration |
| args = sys.argv[1:] |
| H = None |
| C = None |
| if args: |
| if 'header' in args: |
| H = sys.stdout |
| else: |
| H = open('/dev/null', 'w') |
| if 'source' in args: |
| C = sys.stdout |
| else: |
| C = open('/dev/null', 'w') |
| else: |
| H = open(os.path.join( |
| os.path.dirname(sys.argv[0]), '../../../src/core/lib/transport/static_metadata.h'), 'w') |
| C = open(os.path.join( |
| os.path.dirname(sys.argv[0]), '../../../src/core/lib/transport/static_metadata.c'), 'w') |
| |
| # copy-paste copyright notice from this file |
| with open(sys.argv[0]) as my_source: |
| copyright = [] |
| for line in my_source: |
| if line[0] != '#': break |
| for line in my_source: |
| if line[0] == '#': |
| copyright.append(line) |
| break |
| for line in my_source: |
| if line[0] != '#': |
| break |
| copyright.append(line) |
| put_banner([H,C], [line[2:].rstrip() for line in copyright]) |
| |
| put_banner([H,C], |
| """WARNING: Auto-generated code. |
| |
| To make changes to this file, change |
| tools/codegen/core/gen_static_metadata.py, and then re-run it. |
| |
| See metadata.h for an explanation of the interface here, and metadata.c for |
| an explanation of what's going on. |
| """.splitlines()) |
| |
| print >>H, '#ifndef GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H' |
| print >>H, '#define GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H' |
| print >>H |
| print >>H, '#include "src/core/lib/transport/metadata.h"' |
| print >>H |
| |
| print >>C, '#include "src/core/lib/transport/static_metadata.h"' |
| print >>C |
| |
| print >>H, '#define GRPC_STATIC_MDSTR_COUNT %d' % len(all_strs) |
| print >>H, 'extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];' |
| for i, elem in enumerate(all_strs): |
| print >>H, '/* "%s" */' % elem |
| print >>H, '#define %s (&grpc_static_mdstr_table[%d])' % (mangle(elem).upper(), i) |
| print >>H |
| print >>C, 'grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];' |
| print >>C |
| |
| print >>H, '#define GRPC_STATIC_MDELEM_COUNT %d' % len(all_elems) |
| print >>H, 'extern grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];' |
| print >>H, 'extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];' |
| for i, elem in enumerate(all_elems): |
| print >>H, '/* "%s": "%s" */' % elem |
| print >>H, '#define %s (&grpc_static_mdelem_table[%d])' % (mangle(elem).upper(), i) |
| print >>H |
| print >>C, 'grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];' |
| print >>C, 'uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {' |
| print >>C, ' %s' % ','.join('%d' % static_userdata.get(elem, 0) for elem in all_elems) |
| print >>C, '};' |
| print >>C |
| |
| def str_idx(s): |
| for i, s2 in enumerate(all_strs): |
| if s == s2: |
| return i |
| |
| def md_idx(m): |
| for i, m2 in enumerate(all_elems): |
| if m == m2: |
| return i |
| |
| print >>H, 'extern const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT*2];' |
| print >>C, 'const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT*2] = {' |
| print >>C, ','.join('%d' % str_idx(x) for x in itertools.chain.from_iterable([a,b] for a, b in all_elems)) |
| print >>C, '};' |
| print >>C |
| |
| print >>H, 'extern const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT];' |
| print >>C, 'const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {' |
| print >>C, '%s' % ',\n'.join(' "%s"' % s for s in all_strs) |
| print >>C, '};' |
| print >>C |
| |
| print >>H, 'extern const uint8_t grpc_static_accept_encoding_metadata[%d];' % (1 << len(COMPRESSION_ALGORITHMS)) |
| print >>C, 'const uint8_t grpc_static_accept_encoding_metadata[%d] = {' % (1 << len(COMPRESSION_ALGORITHMS)) |
| print >>C, '0,%s' % ','.join('%d' % md_idx(elem) for elem in compression_elems) |
| print >>C, '};' |
| print >>C |
| |
| print >>H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]])' |
| |
| print >>H, '#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */' |
| |
| H.close() |
| C.close() |