|
| 1 | +import argparse |
| 2 | +import os |
| 3 | +import glob |
| 4 | +import sys |
| 5 | +import re |
| 6 | +from tabulate import tabulate |
| 7 | + |
| 8 | +COLUMN_WIDTH_MAX = 40 |
| 9 | +MODIF_COLUMN_WIDTH_MAX = 80 |
| 10 | + |
| 11 | +RST_TEMPLATE = '''\ |
| 12 | +SONiC-linux-kernel KConfig Difference: |
| 13 | +========== |
| 14 | +
|
| 15 | +Reference Kernel |
| 16 | +------------ |
| 17 | +- Version: {} |
| 18 | +- BuildID: https://dev.azure.com/mssonic/build/_build/results?buildId={}&view=results |
| 19 | +
|
| 20 | +Latest Kernel |
| 21 | +------------ |
| 22 | +- Version: {} |
| 23 | +- BuildID: https://dev.azure.com/mssonic/build/_build/results?buildId={}&view=results |
| 24 | +
|
| 25 | +
|
| 26 | +Additions & Deletions |
| 27 | +------------ |
| 28 | +{} |
| 29 | +
|
| 30 | +Modifications |
| 31 | +------------ |
| 32 | +{} |
| 33 | +''' |
| 34 | + |
| 35 | +def read_data(file1): |
| 36 | + data = [] |
| 37 | + try: |
| 38 | + with open(file1, 'r') as f1: |
| 39 | + data = f1.readlines() |
| 40 | + except Exception as e: |
| 41 | + print("ABORT: Reading failed from {}, {}".format(file1, str(e))) |
| 42 | + sys.exit(1) |
| 43 | + |
| 44 | + data = filter(lambda line: not(line.startswith('#')), data) |
| 45 | + ret = dict() |
| 46 | + for line in data: |
| 47 | + tokens = line.split('=') |
| 48 | + if len(tokens) == 2: |
| 49 | + key, val = tokens[0].strip(), tokens[-1].strip() |
| 50 | + ret[key] = val |
| 51 | + return ret |
| 52 | + |
| 53 | +def write_data(fname, data): |
| 54 | + try: |
| 55 | + with open(fname, 'w') as f: |
| 56 | + f.write(data) |
| 57 | + except Exception as e: |
| 58 | + print("ABORT: Writing to the file {} failed {}".format(fname, str(e))) |
| 59 | + sys.exit(1) |
| 60 | + |
| 61 | +def generate_diff(file1, file2): |
| 62 | + data_f1 = read_data(file1) |
| 63 | + data_f2 = read_data(file2) |
| 64 | + |
| 65 | + additions = [] |
| 66 | + modifications = [] |
| 67 | + deletions = [] |
| 68 | + |
| 69 | + for key_old, val_old in data_f1.items(): |
| 70 | + val_new = data_f2.get(key_old, None) |
| 71 | + if not val_new: |
| 72 | + deletions.append("{}={}".format(key_old, val_old)) |
| 73 | + elif val_old != val_new: |
| 74 | + modifications.append("{}={}->{}".format(key_old, val_old, val_new)) |
| 75 | + if val_new: |
| 76 | + del data_f2[key_old] |
| 77 | + |
| 78 | + for key, val in data_f2.items(): |
| 79 | + additions.append("{}={}".format(key, val)) |
| 80 | + return additions, modifications, deletions |
| 81 | + |
| 82 | +def restrict_column_width(lis, width): |
| 83 | + for i in range(0, len(lis)): |
| 84 | + curr_width = len(lis[i]) |
| 85 | + new_val = '' |
| 86 | + num_newlines = int(curr_width/width) |
| 87 | + for j in range(0, num_newlines+1): |
| 88 | + if (j+1)*width < curr_width: |
| 89 | + new_val += lis[i][j*width:(j+1)*width] |
| 90 | + new_val += "\n" |
| 91 | + else: |
| 92 | + new_val += lis[i][j*width:] |
| 93 | + lis[i] = new_val |
| 94 | + |
| 95 | +def format_diff_table(additions, modifications, deletions): |
| 96 | + max_len = max(len(additions), len(deletions)) |
| 97 | + additions += [''] * (max_len - len(additions)) |
| 98 | + deletions += [''] * (max_len - len(deletions)) |
| 99 | + |
| 100 | + restrict_column_width(additions, COLUMN_WIDTH_MAX) |
| 101 | + restrict_column_width(deletions, COLUMN_WIDTH_MAX) |
| 102 | + restrict_column_width(modifications, MODIF_COLUMN_WIDTH_MAX) |
| 103 | + |
| 104 | + table_data = list(zip(additions, deletions)) |
| 105 | + headers = ["ADDITIONS", "DELETIONS"] |
| 106 | + |
| 107 | + add_del = tabulate(table_data, headers=headers, tablefmt="grid") |
| 108 | + mod = tabulate(list(zip(modifications)), headers=["MODIFICATIONS"], tablefmt="grid") |
| 109 | + return add_del, mod |
| 110 | + |
| 111 | +def parse_kver(loc): |
| 112 | + files = glob.glob(os.path.join(loc, "config-*")) |
| 113 | + if len(files) > 1: |
| 114 | + print("WARNING: Multiple config- files present under {}, {}".format(loc, files)) |
| 115 | + result = re.search(r"config-(.*)", os.path.basename(files[-1])) |
| 116 | + return result.group(1) |
| 117 | + |
| 118 | +def create_parser(): |
| 119 | + # Create argument parser |
| 120 | + parser = argparse.ArgumentParser() |
| 121 | + |
| 122 | + # Optional arguments |
| 123 | + parser.add_argument("--arch", type=str, required=True) |
| 124 | + parser.add_argument("--old_kcfg", type=str, required=True) |
| 125 | + parser.add_argument("--new_kcfg", type=str, required=True) |
| 126 | + parser.add_argument("--output", type=str, required=True) |
| 127 | + parser.add_argument("--ref_buildid", type=str, required=True) |
| 128 | + parser.add_argument("--buildid", type=str, required=True) |
| 129 | + return parser |
| 130 | + |
| 131 | +def verify_args(args): |
| 132 | + if not glob.glob(os.path.join(args.old_kcfg, "config-*")): |
| 133 | + print("ABORT: config file missing under {}".format(args.old_kcfg)) |
| 134 | + return False |
| 135 | + |
| 136 | + if not glob.glob(os.path.join(args.new_kcfg, "config-*")): |
| 137 | + print("ABORT: config file missing under {}".format(args.new_kcfg)) |
| 138 | + return False |
| 139 | + |
| 140 | + if not os.path.exists(os.path.dirname(args.output)): |
| 141 | + print("ABORT: Output Folder {} doesn't exist".format(args.output)) |
| 142 | + return False |
| 143 | + return True |
| 144 | + |
| 145 | +if __name__ == "__main__": |
| 146 | + parser = create_parser() |
| 147 | + args = parser.parse_args() |
| 148 | + if not verify_args(args): |
| 149 | + sys.exit(1) |
| 150 | + |
| 151 | + ver_old = parse_kver(args.old_kcfg) |
| 152 | + ver_new = parse_kver(args.new_kcfg) |
| 153 | + f_old = os.path.join(args.old_kcfg, 'config-{}'.format(ver_old)) |
| 154 | + f_new = os.path.join(args.new_kcfg, 'config-{}'.format(ver_new)) |
| 155 | + |
| 156 | + additions, modifications, deletions = generate_diff(f_old, f_new) |
| 157 | + add_del, mod = format_diff_table(additions, modifications, deletions) |
| 158 | + |
| 159 | + diff = RST_TEMPLATE.format(ver_old, args.ref_buildid, ver_new, args.buildid, add_del, mod) |
| 160 | + write_data(args.output, diff) |
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