/usr/src/openvswitch-1.4.0/ovsdb/ovsdb-idlc.in is in openvswitch-datapath-dkms 1.4.0-1ubuntu1.
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import getopt
import os
import re
import sys
import ovs.json
import ovs.db.error
import ovs.db.schema
argv0 = sys.argv[0]
def parseSchema(filename):
return ovs.db.schema.IdlSchema.from_json(ovs.json.from_file(filename))
def annotateSchema(schemaFile, annotationFile):
schemaJson = ovs.json.from_file(schemaFile)
execfile(annotationFile, globals(), {"s": schemaJson})
ovs.json.to_stream(schemaJson, sys.stdout)
def constify(cType, const):
if (const and cType.endswith('*') and not cType.endswith('**')):
return 'const %s' % cType
else:
return cType
def cMembers(prefix, columnName, column, const):
type = column.type
if is_optional_bool(type):
const = True
if type.n_min == 1 and type.n_max == 1:
singleton = True
pointer = ''
else:
singleton = False
if type.is_optional_pointer():
pointer = ''
else:
pointer = '*'
if type.value:
key = {'name': "key_%s" % columnName,
'type': constify(type.key.toCType(prefix) + pointer, const),
'comment': ''}
value = {'name': "value_%s" % columnName,
'type': constify(type.value.toCType(prefix) + pointer, const),
'comment': ''}
members = [key, value]
else:
m = {'name': columnName,
'type': constify(type.key.toCType(prefix) + pointer, const),
'comment': type.cDeclComment()}
members = [m]
if not singleton and not type.is_optional_pointer():
members.append({'name': 'n_%s' % columnName,
'type': 'size_t ',
'comment': ''})
return members
def printCIDLHeader(schemaFile):
schema = parseSchema(schemaFile)
prefix = schema.idlPrefix
print '''\
/* Generated automatically -- do not modify! -*- buffer-read-only: t -*- */
#ifndef %(prefix)sIDL_HEADER
#define %(prefix)sIDL_HEADER 1
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "ovsdb-data.h"
#include "ovsdb-idl-provider.h"
#include "uuid.h"''' % {'prefix': prefix.upper()}
for tableName, table in sorted(schema.tables.iteritems()):
structName = "%s%s" % (prefix, tableName.lower())
print ""
print "/* %s table. */" % tableName
print "struct %s {" % structName
print "\tstruct ovsdb_idl_row header_;"
for columnName, column in sorted(table.columns.iteritems()):
print "\n\t/* %s column. */" % columnName
for member in cMembers(prefix, columnName, column, False):
print "\t%(type)s%(name)s;%(comment)s" % member
print "};"
# Column indexes.
printEnum(["%s_COL_%s" % (structName.upper(), columnName.upper())
for columnName in sorted(table.columns)]
+ ["%s_N_COLUMNS" % structName.upper()])
print
for columnName in table.columns:
print "#define %(s)s_col_%(c)s (%(s)s_columns[%(S)s_COL_%(C)s])" % {
's': structName,
'S': structName.upper(),
'c': columnName,
'C': columnName.upper()}
print "\nextern struct ovsdb_idl_column %s_columns[%s_N_COLUMNS];" % (structName, structName.upper())
print '''
const struct %(s)s *%(s)s_first(const struct ovsdb_idl *);
const struct %(s)s *%(s)s_next(const struct %(s)s *);
#define %(S)s_FOR_EACH(ROW, IDL) \\
for ((ROW) = %(s)s_first(IDL); \\
(ROW); \\
(ROW) = %(s)s_next(ROW))
#define %(S)s_FOR_EACH_SAFE(ROW, NEXT, IDL) \\
for ((ROW) = %(s)s_first(IDL); \\
(ROW) ? ((NEXT) = %(s)s_next(ROW), 1) : 0; \\
(ROW) = (NEXT))
void %(s)s_delete(const struct %(s)s *);
struct %(s)s *%(s)s_insert(struct ovsdb_idl_txn *);
''' % {'s': structName, 'S': structName.upper()}
for columnName, column in sorted(table.columns.iteritems()):
print 'void %(s)s_verify_%(c)s(const struct %(s)s *);' % {'s': structName, 'c': columnName}
print """
/* Functions for fetching columns as \"struct ovsdb_datum\"s. (This is
rarely useful. More often, it is easier to access columns by using
the members of %(s)s directly.) */""" % {'s': structName}
for columnName, column in sorted(table.columns.iteritems()):
if column.type.value:
valueParam = ', enum ovsdb_atomic_type value_type'
else:
valueParam = ''
print 'const struct ovsdb_datum *%(s)s_get_%(c)s(const struct %(s)s *, enum ovsdb_atomic_type key_type%(v)s);' % {
's': structName, 'c': columnName, 'v': valueParam}
print
for columnName, column in sorted(table.columns.iteritems()):
print 'void %(s)s_set_%(c)s(const struct %(s)s *,' % {'s': structName, 'c': columnName},
args = ['%(type)s%(name)s' % member for member
in cMembers(prefix, columnName, column, True)]
print '%s);' % ', '.join(args)
# Table indexes.
printEnum(["%sTABLE_%s" % (prefix.upper(), tableName.upper()) for tableName in sorted(schema.tables)] + ["%sN_TABLES" % prefix.upper()])
print
for tableName in schema.tables:
print "#define %(p)stable_%(t)s (%(p)stable_classes[%(P)sTABLE_%(T)s])" % {
'p': prefix,
'P': prefix.upper(),
't': tableName.lower(),
'T': tableName.upper()}
print "\nextern struct ovsdb_idl_table_class %stable_classes[%sN_TABLES];" % (prefix, prefix.upper())
print "\nextern struct ovsdb_idl_class %sidl_class;" % prefix
print "\nvoid %sinit(void);" % prefix
print "\n#endif /* %(prefix)sIDL_HEADER */" % {'prefix': prefix.upper()}
def printEnum(members):
if len(members) == 0:
return
print "\nenum {";
for member in members[:-1]:
print " %s," % member
print " %s" % members[-1]
print "};"
def is_optional_bool(type):
return (type.key.type == ovs.db.types.BooleanType and not type.value
and type.n_min == 0 and type.n_max == 1)
def printCIDLSource(schemaFile):
schema = parseSchema(schemaFile)
prefix = schema.idlPrefix
print '''\
/* Generated automatically -- do not modify! -*- buffer-read-only: t -*- */
#include <config.h>
#include %s
#include <assert.h>
#include <limits.h>
#include "ovsdb-data.h"
#include "ovsdb-error.h"
static bool inited;
''' % schema.idlHeader
# Cast functions.
for tableName, table in sorted(schema.tables.iteritems()):
structName = "%s%s" % (prefix, tableName.lower())
print '''
static struct %(s)s *
%(s)s_cast(const struct ovsdb_idl_row *row)
{
return row ? CONTAINER_OF(row, struct %(s)s, header_) : NULL;
}\
''' % {'s': structName}
for tableName, table in sorted(schema.tables.iteritems()):
structName = "%s%s" % (prefix, tableName.lower())
print ""
print "/* %s table. */" % (tableName)
# Parse functions.
for columnName, column in sorted(table.columns.iteritems()):
print '''
static void
%(s)s_parse_%(c)s(struct ovsdb_idl_row *row_, const struct ovsdb_datum *datum)
{
struct %(s)s *row = %(s)s_cast(row_);''' % {'s': structName,
'c': columnName}
type = column.type
if type.value:
keyVar = "row->key_%s" % columnName
valueVar = "row->value_%s" % columnName
else:
keyVar = "row->%s" % columnName
valueVar = None
if is_optional_bool(type):
# Special case for an optional bool. This is only here because
# sparse does not like the "normal" case below ("warning:
# expression using sizeof bool").
print
print " assert(inited);"
print " if (datum->n >= 1) {"
print " static const bool false_value = false;"
print " static const bool true_value = true;"
print
print " row->n_%s = 1;" % columnName
print " %s = datum->keys[0].boolean ? &true_value : &false_value;" % keyVar
print " } else {"
print " row->n_%s = 0;" % columnName
print " %s = NULL;" % keyVar
print " }"
elif (type.n_min == 1 and type.n_max == 1) or type.is_optional_pointer():
print
print " assert(inited);"
print " if (datum->n >= 1) {"
if not type.key.ref_table:
print " %s = datum->keys[0].%s;" % (keyVar, type.key.type.to_string())
else:
print " %s = %s%s_cast(ovsdb_idl_get_row_arc(row_, &%stable_classes[%sTABLE_%s], &datum->keys[0].uuid));" % (keyVar, prefix, type.key.ref_table.name.lower(), prefix, prefix.upper(), type.key.ref_table.name.upper())
if valueVar:
if type.value.ref_table:
print " %s = datum->values[0].%s;" % (valueVar, type.value.type.to_string())
else:
print " %s = %s%s_cast(ovsdb_idl_get_row_arc(row_, &%stable_classes[%sTABLE_%s], &datum->values[0].uuid));" % (valueVar, prefix, type.value.ref_table.name.lower(), prefix, prefix.upper(), type.value.ref_table.name.upper())
print " } else {"
print " %s" % type.key.initCDefault(keyVar, type.n_min == 0)
if valueVar:
print " %s" % type.value.initCDefault(valueVar, type.n_min == 0)
print " }"
else:
if type.n_max != sys.maxint:
print " size_t n = MIN(%d, datum->n);" % type.n_max
nMax = "n"
else:
nMax = "datum->n"
print " size_t i;"
print
print " assert(inited);"
print " %s = NULL;" % keyVar
if valueVar:
print " %s = NULL;" % valueVar
print " row->n_%s = 0;" % columnName
print " for (i = 0; i < %s; i++) {" % nMax
refs = []
if type.key.ref_table:
print " struct %s%s *keyRow = %s%s_cast(ovsdb_idl_get_row_arc(row_, &%stable_classes[%sTABLE_%s], &datum->keys[i].uuid));" % (prefix, type.key.ref_table.name.lower(), prefix, type.key.ref_table.name.lower(), prefix, prefix.upper(), type.key.ref_table.name.upper())
keySrc = "keyRow"
refs.append('keyRow')
else:
keySrc = "datum->keys[i].%s" % type.key.type.to_string()
if type.value and type.value.ref_table:
print " struct %s%s *valueRow = %s%s_cast(ovsdb_idl_get_row_arc(row_, &%stable_classes[%sTABLE_%s], &datum->values[i].uuid));" % (prefix, type.value.ref_table.name.lower(), prefix, type.value.ref_table.name.lower(), prefix, prefix.upper(), type.value.ref_table.name.upper())
valueSrc = "valueRow"
refs.append('valueRow')
elif valueVar:
valueSrc = "datum->values[i].%s" % type.value.type.to_string()
if refs:
print " if (%s) {" % ' && '.join(refs)
indent = " "
else:
indent = " "
print "%sif (!row->n_%s) {" % (indent, columnName)
print "%s %s = xmalloc(%s * sizeof *%s);" % (indent, keyVar, nMax, keyVar)
if valueVar:
print "%s %s = xmalloc(%s * sizeof *%s);" % (indent, valueVar, nMax, valueVar)
print "%s}" % indent
print "%s%s[row->n_%s] = %s;" % (indent, keyVar, columnName, keySrc)
if valueVar:
print "%s%s[row->n_%s] = %s;" % (indent, valueVar, columnName, valueSrc)
print "%srow->n_%s++;" % (indent, columnName)
if refs:
print " }"
print " }"
print "}"
# Unparse functions.
for columnName, column in sorted(table.columns.iteritems()):
type = column.type
if (type.key.type == ovs.db.types.BooleanType and not type.value
and type.n_min == 0 and type.n_max == 1):
print '''
static void
%(s)s_unparse_%(c)s(struct ovsdb_idl_row *row OVS_UNUSED)
{
/* Nothing to do. */
}''' % {'s': structName, 'c': columnName}
elif (type.n_min != 1 or type.n_max != 1) and not type.is_optional_pointer():
print '''
static void
%(s)s_unparse_%(c)s(struct ovsdb_idl_row *row_)
{
struct %(s)s *row = %(s)s_cast(row_);
assert(inited);''' % {'s': structName, 'c': columnName}
if type.value:
keyVar = "row->key_%s" % columnName
valueVar = "row->value_%s" % columnName
else:
keyVar = "row->%s" % columnName
valueVar = None
print " free(%s);" % keyVar
if valueVar:
print " free(%s);" % valueVar
print '}'
else:
print '''
static void
%(s)s_unparse_%(c)s(struct ovsdb_idl_row *row OVS_UNUSED)
{
/* Nothing to do. */
}''' % {'s': structName, 'c': columnName}
# First, next functions.
print '''
const struct %(s)s *
%(s)s_first(const struct ovsdb_idl *idl)
{
return %(s)s_cast(ovsdb_idl_first_row(idl, &%(p)stable_classes[%(P)sTABLE_%(T)s]));
}
const struct %(s)s *
%(s)s_next(const struct %(s)s *row)
{
return %(s)s_cast(ovsdb_idl_next_row(&row->header_));
}''' % {'s': structName,
'p': prefix,
'P': prefix.upper(),
'T': tableName.upper()}
print '''
void
%(s)s_delete(const struct %(s)s *row)
{
ovsdb_idl_txn_delete(&row->header_);
}
struct %(s)s *
%(s)s_insert(struct ovsdb_idl_txn *txn)
{
return %(s)s_cast(ovsdb_idl_txn_insert(txn, &%(p)stable_classes[%(P)sTABLE_%(T)s], NULL));
}
''' % {'s': structName,
'p': prefix,
'P': prefix.upper(),
'T': tableName.upper()}
# Verify functions.
for columnName, column in sorted(table.columns.iteritems()):
print '''
void
%(s)s_verify_%(c)s(const struct %(s)s *row)
{
assert(inited);
ovsdb_idl_txn_verify(&row->header_, &%(s)s_columns[%(S)s_COL_%(C)s]);
}''' % {'s': structName,
'S': structName.upper(),
'c': columnName,
'C': columnName.upper()}
# Get functions.
for columnName, column in sorted(table.columns.iteritems()):
if column.type.value:
valueParam = ',\n\tenum ovsdb_atomic_type value_type OVS_UNUSED'
valueType = '\n assert(value_type == %s);' % column.type.value.toAtomicType()
valueComment = "\n * 'value_type' must be %s." % column.type.value.toAtomicType()
else:
valueParam = ''
valueType = ''
valueComment = ''
print """
/* Returns the %(c)s column's value in 'row' as a struct ovsdb_datum.
* This is useful occasionally: for example, ovsdb_datum_find_key() is an
* easier and more efficient way to search for a given key than implementing
* the same operation on the "cooked" form in 'row'.
*
* 'key_type' must be %(kt)s.%(vc)s
* (This helps to avoid silent bugs if someone changes %(c)s's
* type without updating the caller.)
*
* The caller must not modify or free the returned value.
*
* Various kinds of changes can invalidate the returned value: modifying
* 'column' within 'row', deleting 'row', or completing an ongoing transaction.
* If the returned value is needed for a long time, it is best to make a copy
* of it with ovsdb_datum_clone(). */
const struct ovsdb_datum *
%(s)s_get_%(c)s(const struct %(s)s *row,
\tenum ovsdb_atomic_type key_type OVS_UNUSED%(v)s)
{
assert(key_type == %(kt)s);%(vt)s
return ovsdb_idl_read(&row->header_, &%(s)s_col_%(c)s);
}""" % {'s': structName, 'c': columnName,
'kt': column.type.key.toAtomicType(),
'v': valueParam, 'vt': valueType, 'vc': valueComment}
# Set functions.
for columnName, column in sorted(table.columns.iteritems()):
type = column.type
print '\nvoid'
members = cMembers(prefix, columnName, column, True)
keyVar = members[0]['name']
nVar = None
valueVar = None
if type.value:
valueVar = members[1]['name']
if len(members) > 2:
nVar = members[2]['name']
else:
if len(members) > 1:
nVar = members[1]['name']
print '%(s)s_set_%(c)s(const struct %(s)s *row, %(args)s)' % \
{'s': structName, 'c': columnName,
'args': ', '.join(['%(type)s%(name)s' % m for m in members])}
print "{"
print " struct ovsdb_datum datum;"
if type.n_min == 1 and type.n_max == 1:
print
print " assert(inited);"
print " datum.n = 1;"
print " datum.keys = xmalloc(sizeof *datum.keys);"
print " " + type.key.copyCValue("datum.keys[0].%s" % type.key.type.to_string(), keyVar)
if type.value:
print " datum.values = xmalloc(sizeof *datum.values);"
print " "+ type.value.copyCValue("datum.values[0].%s" % type.value.type.to_string(), valueVar)
else:
print " datum.values = NULL;"
elif type.is_optional_pointer():
print
print " assert(inited);"
print " if (%s) {" % keyVar
print " datum.n = 1;"
print " datum.keys = xmalloc(sizeof *datum.keys);"
print " " + type.key.copyCValue("datum.keys[0].%s" % type.key.type.to_string(), keyVar)
print " } else {"
print " datum.n = 0;"
print " datum.keys = NULL;"
print " }"
print " datum.values = NULL;"
else:
print " size_t i;"
print
print " assert(inited);"
print " datum.n = %s;" % nVar
print " datum.keys = xmalloc(%s * sizeof *datum.keys);" % nVar
if type.value:
print " datum.values = xmalloc(%s * sizeof *datum.values);" % nVar
else:
print " datum.values = NULL;"
print " for (i = 0; i < %s; i++) {" % nVar
print " " + type.key.copyCValue("datum.keys[i].%s" % type.key.type.to_string(), "%s[i]" % keyVar)
if type.value:
print " " + type.value.copyCValue("datum.values[i].%s" % type.value.type.to_string(), "%s[i]" % valueVar)
print " }"
if type.value:
valueType = type.value.toAtomicType()
else:
valueType = "OVSDB_TYPE_VOID"
print " ovsdb_datum_sort_unique(&datum, %s, %s);" % (
type.key.toAtomicType(), valueType)
print " ovsdb_idl_txn_write(&row->header_, &%(s)s_columns[%(S)s_COL_%(C)s], &datum);" \
% {'s': structName,
'S': structName.upper(),
'C': columnName.upper()}
print "}"
# Table columns.
print "\nstruct ovsdb_idl_column %s_columns[%s_N_COLUMNS];" % (
structName, structName.upper())
print """
static void\n%s_columns_init(void)
{
struct ovsdb_idl_column *c;\
""" % structName
for columnName, column in sorted(table.columns.iteritems()):
cs = "%s_col_%s" % (structName, columnName)
d = {'cs': cs, 'c': columnName, 's': structName}
print
print " /* Initialize %(cs)s. */" % d
print " c = &%(cs)s;" % d
print " c->name = \"%(c)s\";" % d
print column.type.cInitType(" ", "c->type")
print " c->parse = %(s)s_parse_%(c)s;" % d
print " c->unparse = %(s)s_unparse_%(c)s;" % d
print "}"
# Table classes.
print ""
print "struct ovsdb_idl_table_class %stable_classes[%sN_TABLES] = {" % (prefix, prefix.upper())
for tableName, table in sorted(schema.tables.iteritems()):
structName = "%s%s" % (prefix, tableName.lower())
if table.is_root:
is_root = "true"
else:
is_root = "false"
print " {\"%s\", %s," % (tableName, is_root)
print " %s_columns, ARRAY_SIZE(%s_columns)," % (
structName, structName)
print " sizeof(struct %s)}," % structName
print "};"
# IDL class.
print "\nstruct ovsdb_idl_class %sidl_class = {" % prefix
print " \"%s\", %stable_classes, ARRAY_SIZE(%stable_classes)" % (
schema.name, prefix, prefix)
print "};"
# global init function
print """
void
%sinit(void)
{
if (inited) {
return;
}
inited = true;
""" % prefix
for tableName, table in sorted(schema.tables.iteritems()):
structName = "%s%s" % (prefix, tableName.lower())
print " %s_columns_init();" % structName
print "}"
def ovsdb_escape(string):
def escape(match):
c = match.group(0)
if c == '\0':
raise ovs.db.error.Error("strings may not contain null bytes")
elif c == '\\':
return '\\\\'
elif c == '\n':
return '\\n'
elif c == '\r':
return '\\r'
elif c == '\t':
return '\\t'
elif c == '\b':
return '\\b'
elif c == '\a':
return '\\a'
else:
return '\\x%02x' % ord(c)
return re.sub(r'["\\\000-\037]', escape, string)
def usage():
print """\
%(argv0)s: ovsdb schema compiler
usage: %(argv0)s [OPTIONS] COMMAND ARG...
The following commands are supported:
annotate SCHEMA ANNOTATIONS print SCHEMA combined with ANNOTATIONS
c-idl-header IDL print C header file for IDL
c-idl-source IDL print C source file for IDL implementation
nroff IDL print schema documentation in nroff 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:], 'C:hV',
['directory',
'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-idlc (Open vSwitch) @VERSION@"
elif key in ['-C', '--directory']:
os.chdir(value)
else:
sys.exit(0)
optKeys = [key for key, value in options]
if not args:
sys.stderr.write("%s: missing command argument "
"(use --help for help)\n" % argv0)
sys.exit(1)
commands = {"annotate": (annotateSchema, 2),
"c-idl-header": (printCIDLHeader, 1),
"c-idl-source": (printCIDLSource, 1)}
if not args[0] in commands:
sys.stderr.write("%s: unknown command \"%s\" "
"(use --help for help)\n" % (argv0, args[0]))
sys.exit(1)
func, n_args = commands[args[0]]
if len(args) - 1 != n_args:
sys.stderr.write("%s: \"%s\" requires %d arguments but %d "
"provided\n"
% (argv0, args[0], n_args, len(args) - 1))
sys.exit(1)
func(*args[1:])
except ovs.db.error.Error, e:
sys.stderr.write("%s: %s\n" % (argv0, e))
sys.exit(1)
# Local variables:
# mode: python
# End:
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