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vswitchd: Add entity-relationship diagram to ovs-vswitchd.conf.db.5.
I've updated http://openvswitch.org/ovs-vswitchd.conf.db.5.pdf with example output.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| #! @PYTHON@ | ||
|
|
||
| from datetime import date | ||
| import getopt | ||
| import os | ||
| import re | ||
| import sys | ||
|
|
||
| sys.path.insert(0, "@abs_top_srcdir@/ovsdb") | ||
| import simplejson as json | ||
|
|
||
| from OVSDB import * | ||
|
|
||
| argv0 = sys.argv[0] | ||
|
|
||
| def printEdge(tableName, baseType, label): | ||
| if baseType.refTable: | ||
| options = {} | ||
| options['label'] = '"%s"' % label | ||
| if baseType.refType == 'weak': | ||
| options['constraint'] = 'false' | ||
| print "\t%s -> %s [%s];" % ( | ||
| tableName, | ||
| baseType.refTable, | ||
| ', '.join(['%s=%s' % (k,v) for k,v in options.items()])) | ||
|
|
||
| def schemaToDot(schemaFile): | ||
| schema = DbSchema.fromJson(json.load(open(schemaFile, "r"))) | ||
|
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| print "digraph %s {" % schema.name | ||
| for tableName, table in schema.tables.iteritems(): | ||
| print '\tsize="6.5,4";' | ||
| print '\tmargin="0";' | ||
| print "\tnode [shape=box];" | ||
| print "\t%s;" % tableName | ||
| for columnName, column in table.columns.iteritems(): | ||
| if column.type.value: | ||
| printEdge(tableName, column.type.key, "%s key" % columnName) | ||
| printEdge(tableName, column.type.value, "%s value" % columnName) | ||
| else: | ||
| printEdge(tableName, column.type.key, columnName) | ||
| print "}"; | ||
|
|
||
| def usage(): | ||
| print """\ | ||
| %(argv0)s: compiles ovsdb schemas to graphviz format | ||
| Prints a .dot file that "dot" can render to an entity-relationship diagram | ||
| usage: %(argv0)s [OPTIONS] SCHEMA | ||
| where SCHEMA is an OVSDB schema in JSON format | ||
|
|
||
| The following options are also available: | ||
| -h, --help display this help message | ||
| -V, --version display version information\ | ||
| """ % {'argv0': argv0} | ||
| sys.exit(0) | ||
|
|
||
| if __name__ == "__main__": | ||
| try: | ||
| try: | ||
| options, args = getopt.gnu_getopt(sys.argv[1:], 'hV', | ||
| ['help', 'version']) | ||
| except getopt.GetoptError, geo: | ||
| sys.stderr.write("%s: %s\n" % (argv0, geo.msg)) | ||
| sys.exit(1) | ||
|
|
||
| for key, value in options: | ||
| if key in ['-h', '--help']: | ||
| usage() | ||
| elif key in ['-V', '--version']: | ||
| print "ovsdb-dot (Open vSwitch) @VERSION@" | ||
| else: | ||
| sys.exit(0) | ||
|
|
||
| if len(args) != 1: | ||
| sys.stderr.write("%s: exactly 1 non-option argument required " | ||
| "(use --help for help)\n" % argv0) | ||
| sys.exit(1) | ||
|
|
||
| schemaToDot(args[0]) | ||
|
|
||
| except Error, e: | ||
| sys.stderr.write("%s: %s\n" % (argv0, e.msg)) | ||
| sys.exit(1) | ||
|
|
||
| # Local variables: | ||
| # mode: python | ||
| # End: |
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