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annotate scripts/dump_dbm_sessions_db.py @ 8286:6445e63bb423

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feat(web) - Use native number type input for Number() and Integer(). When editing hyperdb.Number() or hyperdb.Integer() properties, use a native number input. For Number you can enter digits, +/-, . and e/E for exponent (1E2 = 100). For integer we have the same keys as number, but also add step=1 to the input. This stops submitting 23.5 suggesting 23 or 24. It does allow 2E4 to be submitted that is rejected with an error from the backend. However if the spinner is used with 2E4 it is turned into 20000, a pure integer and incremented/decremented by the spinner. The upgrade happens automatically. Directions on going back to text input provided. User guide updated to describe addition of spinner. Tests added.
author John Rouillard <rouilj@ieee.org>
date Sat, 18 Jan 2025 14:54:31 -0500
parents 9ba04f37896f
children
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1 #! /usr/bin/env python3
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2 """Usage: dump_dbm_sessions_db.py [filename]
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3
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4 Simple script to dump the otks and sessions dbm databases. Dumps
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5 sessions db in current directory if no argument is given.
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6
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7 Dump format:
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8
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9 key: <timestamp> data
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10
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11 where <timestamp> is the human readable __timestamp decoded from the
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12 data object. Data object is dumped in json format. With pretty print
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13
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14 key:
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15 <timestamp>
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16 {
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17 key: val,
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18 ...
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19 }
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20
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21 if data is not a python object, print will be key: data or
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22 key:
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23 data
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24
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25 if pretty printed.
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26 """
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27
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28 import argparse
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29 import dbm
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30 import json
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31 import marshal
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32 import os
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33 import sys
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34 from datetime import datetime
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35
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36
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37 def indent(text, amount, ch=" "):
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38 """ Found at: https://stackoverflow.com/a/8348914
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39 """
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40 padding = amount * ch
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41 return ''.join(padding+line for line in text.splitlines(True))
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42
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43 def print_marshal(k):
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44 d = marshal.loads(db[k])
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45 try:
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46 t = datetime.fromtimestamp(d['__timestamp'])
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47 except (KeyError, TypeError):
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48 # TypeError raised if marshalled data is not a dict (list, tuple etc)
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49 t = "no_timestamp"
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50 if args.pretty:
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51 print("%s:\n %s\n%s"%(k, t, indent(json.dumps(
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52 d, sort_keys=True, indent=4), 4)))
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53 else:
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54 print("%s: %s %s"%(k, t, d))
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55
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56 def print_raw(k):
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57 if args.pretty:
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58 print("%s:\n %s"%(k, db[k]))
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59 else:
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60 print("%s: %s"%(k, db[k]))
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61
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62 parser = argparse.ArgumentParser(
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63 description='Dump DBM files used by Roundup in storage order.')
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64 parser.add_argument('-k', '--key', action="append",
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65 help='dump the entry for a key, can be used multiple times.')
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66 parser.add_argument('-K', '--keysonly', action='store_true',
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67 help='print the database keys, sorted in byte order.')
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68 parser.add_argument('-p', '--pretty', action='store_true',
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69 help='pretty print the output rather than printing on one line.')
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70 parser.add_argument('file', nargs='?',
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71 help='file to be dumped ("sessions" if not provided)')
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72 args = parser.parse_args()
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73
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74 if args.file:
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75 file = args.file
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76 else:
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77 file="sessions"
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78
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79 try:
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80 db = dbm.open(file)
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81 except Exception as e:
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82 print("Unable to open database for %s: %s"%(file, e))
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83 try:
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84 os.stat(file)
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85 print(" perhaps file is invalid or was created with a different version of Python?")
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86 except OSError:
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87 # the file does exist on disk.
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88 pass
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89 sys.exit(1)
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90
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91 if args.keysonly:
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92 for k in sorted(db.keys()):
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93 print("%s"%k)
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94 sys.exit(0)
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95
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96 if args.key:
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97 for k in args.key:
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98 try:
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99 print_marshal(k)
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100 except (ValueError):
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101 print_raw(k)
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102 sys.exit(0)
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103
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104 k = db.firstkey()
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105 while k is not None:
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106 try:
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107 print_marshal(k)
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108 except (ValueError): # ValueError marshal.loads failed
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109 print_raw(k)
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110
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111 k = db.nextkey(k)
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