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#!/usr/bin/env python3

import sys
import os
import ipaddress
import yaml
from pprint import pprint
import re
from jsonschema import validate, exceptions
import argparse
from subprocess import run, PIPE
from io import StringIO

# VPP feature JSON schema
schema = {
    "$schema": "http://json-schema.org/schema#",
    "type": "object",
    "properties": {
        "name": {"type": "string"},
        "description": {"type": "string"},
        "maintainer": {"$ref": "#/definitions/maintainers"},
        "state": {"type": "string",
                  "enum": ["production", "experimental", "development"]},
        "features": {"$ref": "#/definitions/features"},
        "missing": {"$ref": "#/definitions/features"},
        "properties": {"type": "array",
                       "items": {"type": "string",
                                 "enum": ["API", "CLI", "STATS",
                                          "MULTITHREAD"]},
                       },
    },
    "additionalProperties": False,
    "definitions": {
        "maintainers": {
            "anyof": [{
                "type": "array",
                "items": {"type": "string"},
                "minItems": 1,
            },
                {"type": "string"}],
        },
        "featureobject": {
            "type": "object",
            "patternProperties": {
                "^.*$": {"$ref": "#/definitions/features"},
            },
        },
        "features": {
            "type": "array",
            "items": {"anyOf": [{"$ref": "#/definitions/featureobject"},
                                {"type": "string"},
                                ]},
            "minItems": 1,
        },
    },
}


def filelist_from_git_status():
    filelist = []
    git_status = 'git status --porcelain */FEATURE*.yaml'
    rv = run(git_status.split(), stdout=PIPE, stderr=PIPE)
    if rv.returncode != 0:
        sys.exit(rv.returncode)

    for l in rv.stdout.decode('ascii').split('\n'):
        if len(l):
            filelist.append(l.split()[1])
    return filelist


def filelist_from_git_ls():
    filelist = []
    git_ls = 'git ls-files :(top)*/FEATURE*.yaml'
    rv = run(git_ls.split(), stdout=PIPE, stderr=PIPE)
    if rv.returncode != 0:
        sys.exit(rv.returncode)

    for l in rv.stdout.decode('ascii').split('\n'):
        if len(l):
            filelist.append(l)
    return filelist

def version_from_git():
    git_describe = 'git describe'
    rv = run(git_describe.split(), stdout=PIPE, stderr=PIPE)
    if rv.returncode != 0:
        sys.exit(rv.returncode)
    return rv.stdout.decode('ascii').split('\n')[0]

class MarkDown():
    _dispatch = {}

    def __init__(self, stream):
        self.stream = stream
        self.toc = []

    def print_maintainer(self, o):
        write = self.stream.write
        if type(o) is list:
            write('Maintainers: ' +
                  ', '.join('{m}'.format(m=m) for m in
                            o) + '  \n')
        else:
            write('Maintainer: {o}  \n'.format(o=o))

    _dispatch['maintainer'] = print_maintainer

    def print_features(self, o, indent=0):
        write = self.stream.write
        for f in o:
            indentstr = ' ' * indent
            if type(f) is dict:
                for k, v in f.items():
                    write('{indentstr}- {k}\n'.format(indentstr=indentstr, k=
write('\n') _dispatch['features'] = print_features def print_markdown_header(self, o): write = self.stream.write write('## {o}\n'.format(o=o)) version = version_from_git() write('VPP version: {version}\n\n'.format(version=version)) _dispatch['markdown_header'] = print_markdown_header def print_name(self, o): write = self.stream.write write('### {o}\n'.format(o=o)) self.toc.append(o) _dispatch['name'] = print_name def print_description(self, o): write = self.stream.write write('\n{o}\n\n'.format(o=o)) _dispatch['description'] = print_description def print_state(self, o): write = self.stream.write write('Feature maturity level: {o} \n'.format(o=o)) _dispatch['state'] = print_state def print_properties(self, o): write = self.stream.write write('Supports: {s} \n'.format(s=" ".join(o))) _dispatch['properties'] = print_properties def print_missing(self, o): write = self.stream.write write('\nNot yet implemented: \n') self.print_features(o) _dispatch['missing'] = print_missing def print_code(self, o): write = self.stream.write write('Source Code: [{o}]({o}) \n'.format(o=o)) _dispatch['code'] = print_code def print(self, t, o): write = self.stream.write if t in self._dispatch: self._dispatch[t](self, o,) else: write('NOT IMPLEMENTED: {t}\n') def output_toc(toc, stream): write = stream.write write('## VPP Feature list:\n') for t in toc: ref = t.lower().replace(' ', '-') write('[{t}](#{ref}) \n'.format(t=t, ref=ref)) def featuresort(k): return k[1]['name'] def featurelistsort(k): orderedfields = { 'name': 0, 'maintainer': 1, 'description': 2, 'features': 3, 'state': 4, 'properties': 5, 'missing': 6, 'code': 7, } return orderedfields[k[0]] def output_markdown(features, fields, notfields): stream = StringIO() m = MarkDown(stream) m.print('markdown_header', 'Feature Details:') for path, featuredef in sorted(features.items(), key=featuresort): codeurl = 'https://git.fd.io/vpp/tree/src/' + \ '/'.join(os.path.normpath(path).split('/')[1:-1]) featuredef['code'] = codeurl for k, v in sorted(featuredef.items(), key=featurelistsort): if notfields: if k not in notfields: m.print(k, v) elif fields: if k in fields: m.print(k, v) else: m.print(k, v) tocstream = StringIO() output_toc(m.toc, tocstream) return tocstream, stream def main(): parser = argparse.ArgumentParser(description='VPP Feature List.') parser.add_argument('--validate', dest='validate', action='store_true', help='validate the FEATURE.yaml file') parser.add_argument('--git-status', dest='git_status', action='store_true', help='Get filelist from git status') parser.add_argument('--all', dest='all', action='store_true', help='Validate all files in repository') parser.add_argument('--markdown', dest='markdown', action='store_true', help='Output feature table in markdown') parser.add_argument('infile', nargs='?', type=argparse.FileType('r'), default=sys.stdin) group = parser.add_mutually_exclusive_group() group.add_argument('--include', help='List of fields to include') group.add_argument('--exclude', help='List of fields to exclude') args = parser.parse_args() features = {} if args.git_status: filelist = filelist_from_git_status() elif args.all: filelist = filelist_from_git_ls() else: filelist = args.infile if args.include: fields = args.include.split(',') else: fields = [] if args.exclude: notfields = args.exclude.split(',') else: notfields = [] for featurefile in filelist: featurefile = featurefile.rstrip() # Load configuration file with open(featurefile, encoding='utf-8') as f: cfg = yaml.load(f, Loader=yaml.SafeLoader) try: validate(instance=cfg, schema=schema) except exceptions.ValidationError: print('File does not validate: {featurefile}' \ .format(featurefile=featurefile), file=sys.stderr) raise features[featurefile] = cfg if args.markdown: stream = StringIO() tocstream, stream = output_markdown(features, fields, notfields) print(tocstream.getvalue()) print(stream.getvalue()) stream.close() if __name__ == '__main__': main()