schemadiff.py
author Radek Brich <radek.brich@devl.cz>
Tue, 05 Mar 2013 11:24:47 +0100
changeset 71 4251068a251a
parent 63 8c7f0a51ba50
child 93 b72591087495
permissions -rwxr-xr-x
Update MyManager.
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#!/usr/bin/env python3.2
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#
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# Print differences in database schema.
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#
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# Prints changes from source to destination.
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# SQL patch updates source database schema to destination schema.
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#
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from pgtoolkit import pgmanager, pgbrowser, pgdiff, toolbase
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class SchemaDiffTool(toolbase.SrcDstTool):
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    def __init__(self):
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        toolbase.SrcDstTool.__init__(self, name='schemadiff', desc='Database schema diff.', allow_reverse = True)
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        self.parser.add_argument('-s', dest='schema', nargs='*', help='Schema filter')
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        self.parser.add_argument('-t', dest='table', nargs='*', help='Table filter')
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        self.parser.add_argument('-f', dest='function', type=str, help='Function filter (regex)')
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        self.parser.add_argument('--sql', action='store_true', help='Output is SQL script.')
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        self.parser.add_argument('--body', action='store_true', help='Output diff for function bodies.')
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        self.init()
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    def main(self):
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        srcbrowser = pgbrowser.PgBrowser(self.pgm.get_conn('src'))
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        dstbrowser = pgbrowser.PgBrowser(self.pgm.get_conn('dst'))
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        pgd = pgdiff.PgDiff(srcbrowser, dstbrowser)
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        try:
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            if self.args.schema:
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                pgd.filter_schemas(include=self.args.schema)
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            if self.args.table:
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                pgd.filter_tables(include=self.args.table)
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            if self.args.function:
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                pgd.filter_functions(self.args.function)
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            if self.args.body:
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                pgd.function_body_diff = True
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            if self.args.sql:
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                pgd.print_patch()
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            else:
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                pgd.print_diff()
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        except pgdiff.PgDiffError as e:
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            print('PgDiff error:', str(e))
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tool = SchemaDiffTool()
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tool.main()