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ovsdb-idlc.in
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#! @PYTHON3@
from __future__ import print_function
import getopt
import os
import re
import sys
import ovs.json
import ovs.db.error
import ovs.db.schema
from ovs.db.types import StringType, IntegerType, RealType
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)
exec(compile(open(annotationFile, "rb").read(), annotationFile, 'exec'), globals(), {"s": schemaJson})
ovs.json.to_stream(schemaJson, sys.stdout)
sys.stdout.write('\n')
def constify(cType, const):
if (const
and cType.endswith('*') and
(cType == 'char **' or not cType.endswith('**'))):
return 'const %s' % cType
else:
return cType
def cMembers(prefix, tableName, columnName, column, const, refTable=True):
comment = ""
type = column.type
if type.is_smap():
comment = """
/* Sets the "%(c)s" column's value from the "%(t)s" table in 'row'
* to '%(c)s'.
*
* The caller retains ownership of '%(c)s' and everything in it. */""" \
% {'c': columnName,
't': tableName}
return (comment, [{'name': columnName,
'type': 'struct smap ',
'comment': ''}])
comment = """\n/* Sets the "%s" column from the "%s" table in """\
"""'row' to\n""" % (columnName, tableName)
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:
keyName = "key_%s" % columnName
valueName = "value_%s" % columnName
key = {'name': keyName,
'type': constify(type.key.toCType(prefix, refTable) + pointer, const),
'comment': ''}
value = {'name': valueName,
'type': constify(type.value.toCType(prefix, refTable) + pointer, const),
'comment': ''}
if singleton:
comment += " * the map with key '%s' and value '%s'\n *" \
% (keyName, valueName)
else:
comment += " * the map with keys '%s' and values '%s'\n *" \
% (keyName, valueName)
members = [key, value]
else:
m = {'name': columnName,
'type': constify(type.key.toCType(prefix, refTable) + pointer, const),
'comment': type.cDeclComment()}
if singleton:
comment += " * '%s'" % columnName
else:
comment += " * the '%s' set" % columnName
members = [m]
if not singleton and not type.is_optional_pointer():
sizeName = "n_%s" % columnName
comment += " with '%s' entries" % sizeName
members.append({'name': sizeName,
'type': 'size_t ',
'comment': ''})
comment += ".\n"
if type.is_optional() and not type.is_optional_pointer():
comment += """ *
* '%s' may be 0 or 1; if it is 0, then '%s'
* may be NULL.\n""" \
% ("n_%s" % columnName, columnName)
if type.is_optional_pointer():
comment += """ *
* If "%s" is null, the column will be the empty set,
* otherwise it will contain the specified value.\n""" % columnName
if type.constraintsToEnglish():
comment += """ *
* Argument constraints: %s\n""" \
% type.constraintsToEnglish(lambda s : '"%s"' % s)
comment += " *\n * The caller retains ownership of the arguments. */"
return (comment, members)
# This is equivalent to sorted(table.columns.items()), except that the
# sorting includes a topological component: if column B has a
# dependency on column A, then A will be sorted before B.
def sorted_columns(table):
input = []
for name, column in table.columns.items():
dependencies = column.extensions.get('dependencies', [])
for d in dependencies:
if d not in table.columns:
sys.stderr.write("Table %s column %s depends on column %s "
"but there is no such column\n"
% (table.name, name, d))
sys.exit(1)
input += [(name, column, set(dependencies))]
output = []
satisfied_dependencies = set()
while input:
done = []
next = []
for name, column, dependencies in input:
if dependencies <= satisfied_dependencies:
done += [(name, column)]
else:
next += [(name, column, dependencies)]
if not done:
sys.stderr.write("Table %s columns have circular dependencies\n"
% table.name)
sys.exit(1)
for name, column in done:
satisfied_dependencies.add(name)
output += sorted(done)
input = next
return output
# If a column name in the schema is a C or C++ keyword, append an underscore
# to the column name.
def replace_cplusplus_keyword(schema):
keywords = {'alignas', 'alignof', 'and', 'and_eq', 'asm', 'auto', 'bitand',
'bitor', 'bool', 'break', 'case', 'catch', 'char', 'char16_t',
'char32_t', 'class', 'compl', 'concept', 'const', 'const_cast',
'constexpr', 'continue', 'decltype', 'default', 'delete', 'do',
'double', 'dynamic_cast', 'else', 'enum', 'explicit', 'export',
'extern', 'false', 'float', 'for', 'friend', 'goto', 'if',
'inline', 'int', 'long', 'mutable', 'namespace', 'new',
'noexcept', 'not', 'not_eq', 'nullptr', 'operator', 'or',
'or_eq', 'private', 'protected', 'public', 'register',
'reinterpret_cast', 'requires', 'restrict', 'return', 'short',
'signed', 'sizeof', 'static', 'static_assert', 'static_cast',
'struct', 'switch', 'template', 'this', 'thread_local',
'throw', 'true', 'try', 'typedef', 'typeid', 'typename',
'union', 'unsigned', 'using', 'virtual', 'void', 'volatile',
'wchar_t', 'while', 'xor', 'xor_eq'}
for tableName, table in schema.tables.items():
for columnName in list(table.columns):
if columnName in keywords:
table.columns[columnName + '_'] = table.columns.pop(columnName)
def printCIDLHeader(schemaFile):
schema = parseSchema(schemaFile)
replace_cplusplus_keyword(schema)
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 "smap.h"
#include "uuid.h"
#ifdef __cplusplus
extern "C" {
#endif
%(hDecls)s''' % {'prefix': prefix.upper(),
'hDecls': schema.hDecls})
for tableName, table in sorted(schema.tables.items()):
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_columns(table):
print("\n\t/* %s column. */" % columnName)
if column.extensions.get("members"):
print("\t%s" % column.extensions["members"])
continue
comment, members = cMembers(prefix, tableName,
columnName, column, False)
for member in members:
print("\t%(type)s%(name)s;%(comment)s" % member)
print("};")
# Column indexes.
printEnum("%s_column_id" % structName.lower(), ["%s_COL_%s" % (structName.upper(), columnName.upper())
for columnName, column in sorted_columns(table)]
+ ["%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_table *%(s)s_table_get(const struct ovsdb_idl *);
const struct %(s)s *%(s)s_table_first(const struct %(s)s_table *);
#define %(S)s_TABLE_FOR_EACH(ROW, TABLE) \\
for ((ROW) = %(s)s_table_first(TABLE); \\
(ROW); \\
(ROW) = %(s)s_next(ROW))
#define %(S)s_TABLE_FOR_EACH_SAFE(ROW, NEXT, TABLE) \\
for ((ROW) = %(s)s_table_first(TABLE); \\
(ROW) ? ((NEXT) = %(s)s_next(ROW), 1) : 0; \\
(ROW) = (NEXT))
const struct %(s)s *%(s)s_get_for_uuid(const struct ovsdb_idl *, const struct uuid *);
const struct %(s)s *%(s)s_table_get_for_uuid(const struct %(s)s_table *, const struct uuid *);
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))
unsigned int %(s)s_get_seqno(const struct ovsdb_idl *);
unsigned int %(s)s_row_get_seqno(const struct %(s)s *row, enum ovsdb_idl_change change);
const struct %(s)s *%(s)s_track_get_first(const struct ovsdb_idl *);
const struct %(s)s *%(s)s_track_get_next(const struct %(s)s *);
#define %(S)s_FOR_EACH_TRACKED(ROW, IDL) \\
for ((ROW) = %(s)s_track_get_first(IDL); \\
(ROW); \\
(ROW) = %(s)s_track_get_next(ROW))
const struct %(s)s *%(s)s_table_track_get_first(const struct %(s)s_table *);
#define %(S)s_TABLE_FOR_EACH_TRACKED(ROW, TABLE) \\
for ((ROW) = %(s)s_table_track_get_first(TABLE); \\
(ROW); \\
(ROW) = %(s)s_track_get_next(ROW))
/* Returns true if 'row' was inserted since the last change tracking reset. */
static inline bool %(s)s_is_new(const struct %(s)s *row)
{
return %(s)s_row_get_seqno(row, OVSDB_IDL_CHANGE_MODIFY) == 0;
}
/* Returns true if 'row' was deleted since the last change tracking reset. */
static inline bool %(s)s_is_deleted(const struct %(s)s *row)
{
return %(s)s_row_get_seqno(row, OVSDB_IDL_CHANGE_DELETE) > 0;
}
void %(s)s_index_destroy_row(const struct %(s)s *);
struct %(s)s *%(s)s_index_find(struct ovsdb_idl_index *, const struct %(s)s *);
int %(s)s_index_compare(
struct ovsdb_idl_index *,
const struct %(s)s *,
const struct %(s)s *);
struct ovsdb_idl_cursor %(s)s_cursor_first(struct ovsdb_idl_index *);
struct ovsdb_idl_cursor %(s)s_cursor_first_eq(
struct ovsdb_idl_index *, const struct %(s)s *);
struct ovsdb_idl_cursor %(s)s_cursor_first_ge(
struct ovsdb_idl_index *, const struct %(s)s *);
struct %(s)s *%(s)s_cursor_data(struct ovsdb_idl_cursor *);
#define %(S)s_FOR_EACH_RANGE(ROW, FROM, TO, INDEX) \\
for (struct ovsdb_idl_cursor cursor__ = %(s)s_cursor_first_ge(INDEX, FROM); \\
(cursor__.position \\
&& ((ROW) = %(s)s_cursor_data(&cursor__), \\
!(TO) || %(s)s_index_compare(INDEX, ROW, TO) <= 0)); \\
ovsdb_idl_cursor_next(&cursor__))
#define %(S)s_FOR_EACH_EQUAL(ROW, KEY, INDEX) \\
for (struct ovsdb_idl_cursor cursor__ = %(s)s_cursor_first_eq(INDEX, KEY); \\
(cursor__.position \\
? ((ROW) = %(s)s_cursor_data(&cursor__), \\
ovsdb_idl_cursor_next_eq(&cursor__), \\
true) \\
: false); \\
)
#define %(S)s_FOR_EACH_BYINDEX(ROW, INDEX) \\
for (struct ovsdb_idl_cursor cursor__ = %(s)s_cursor_first(INDEX); \\
(cursor__.position \\
? ((ROW) = %(s)s_cursor_data(&cursor__), \\
ovsdb_idl_cursor_next(&cursor__), \\
true) \\
: false); \\
)
void %(s)s_init(struct %(s)s *);
void %(s)s_delete(const struct %(s)s *);
struct %(s)s *%(s)s_insert(struct ovsdb_idl_txn *);
bool %(s)s_is_updated(const struct %(s)s *, enum %(s)s_column_id);
''' % {'s': structName, 'S': structName.upper()})
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
print('void %(s)s_verify_%(c)s(const struct %(s)s *);' % {'s': structName, 'c': columnName})
print("")
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
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_columns(table):
if column.extensions.get('synthetic'):
continue
print('void %(s)s_set_%(c)s(const struct %(s)s *,' % {'s': structName, 'c': columnName}, end=' ')
if column.type.is_smap():
args = ['const struct smap *']
else:
comment, members = cMembers(prefix, tableName, columnName,
column, True)
args = ['%(type)s%(name)s' % member for member in members]
print('%s);' % ', '.join(args))
print("")
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
if column.type.is_map():
print('void %(s)s_update_%(c)s_setkey(const struct %(s)s *, ' % {'s': structName, 'c': columnName}, end=' ')
print('%(coltype)s, %(valtype)s);' % {'coltype':column.type.key.to_const_c_type(prefix), 'valtype':column.type.value.to_const_c_type(prefix)})
print('void %(s)s_update_%(c)s_delkey(const struct %(s)s *, ' % {'s': structName, 'c': columnName}, end=' ')
print('%(coltype)s);' % {'coltype':column.type.key.to_const_c_type(prefix)})
if column.type.is_set():
print('void %(s)s_update_%(c)s_addvalue(const struct %(s)s *, ' % {'s': structName, 'c': columnName}, end=' ')
print('%(valtype)s);' % {'valtype':column.type.key.to_const_c_type(prefix)})
print('void %(s)s_update_%(c)s_delvalue(const struct %(s)s *, ' % {'s': structName, 'c': columnName}, end=' ')
print('%(valtype)s);' % {'valtype':column.type.key.to_const_c_type(prefix)})
print('void %(s)s_add_clause_%(c)s(struct ovsdb_idl_condition *, enum ovsdb_function function,' % {'s': structName, 'c': columnName}, end=' ')
if column.type.is_smap():
args = ['const struct smap *']
else:
comment, members = cMembers(prefix, tableName, columnName,
column, True, refTable=False)
args = ['%(type)s%(name)s' % member for member in members]
print('%s);' % ', '.join(args))
print('void %(s)s_set_condition(struct ovsdb_idl *, struct ovsdb_idl_condition *);' % {'s': structName})
print("")
# Table indexes.
print("struct %(s)s *%(s)s_index_init_row(struct ovsdb_idl_index *);" % {'s': structName})
print
for columnName, column in sorted(table.columns.items()):
print('void %(s)s_index_set_%(c)s(const struct %(s)s *,' % {'s': structName, 'c': columnName})
if column.type.is_smap():
args = ['const struct smap *']
else:
comment, members = cMembers(prefix, tableName, columnName,
column, True)
args = ['%(type)s%(name)s' % member for member in members]
print('%s);' % ', '.join(args))
print
printEnum("%stable_id" % prefix.lower(), ["%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("\nconst char * %sget_db_version(void);" % prefix)
print('''
#ifdef __cplusplus
}
#endif''')
print("\n#endif /* %(prefix)sIDL_HEADER */" % {'prefix': prefix.upper()})
def printEnum(type, members):
if len(members) == 0:
return
print("\nenum %s {" % type)
for member in members[:-1]:
print(" %s," % member)
print(" %s" % members[-1])
print("};")
def printCIDLSource(schemaFile):
schema = parseSchema(schemaFile)
replace_cplusplus_keyword(schema)
prefix = schema.idlPrefix
print('''\
/* Generated automatically -- do not modify! -*- buffer-read-only: t -*- */
#include <config.h>
#include %(header)s
#include <limits.h>
#include "ovs-thread.h"
#include "ovsdb-data.h"
#include "ovsdb-error.h"
#include "util.h"
%(cDecls)s
''' % {'header': schema.idlHeader,
'cDecls': schema.cDecls})
# Cast functions.
for tableName, table in sorted(schema.tables.items()):
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.items()):
structName = "%s%s" % (prefix, tableName.lower())
print(" ")
print("/* %s table. */" % (tableName))
print('''
const struct %(s)s_table *
%(s)s_table_get(const struct ovsdb_idl *idl)
{
return (const struct %(s)s_table *) idl;
}
const struct %(s)s *
%(s)s_table_first(const struct %(s)s_table *table)
{
const struct ovsdb_idl *idl = (const struct ovsdb_idl *) table;
return %(s)s_first(idl);
}
const struct %(s)s *
%(s)s_table_track_get_first(const struct %(s)s_table *table)
{
const struct ovsdb_idl *idl = (const struct ovsdb_idl *) table;
return %(s)s_track_get_first(idl);
}
''' % {'s': structName})
# Parse functions.
for columnName, column in sorted_columns(table):
if 'parse' in column.extensions:
print('''
static void
%(s)s_parse_%(c)s(struct ovsdb_idl_row *row_, const struct ovsdb_datum *datum OVS_UNUSED)
{
struct %(s)s *row = %(s)s_cast(row_);\
''' % {'s': structName, 'c': columnName})
print(column.extensions["parse"])
print("}")
continue
if column.extensions.get('synthetic'):
# Synthetic columns aren't parsed from a datum.
unused = " OVS_UNUSED"
else:
unused = ""
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 'parse' in column.extensions:
print(column.extensions["parse"])
print("}")
continue
if type.value:
keyVar = "row->key_%s" % columnName
valueVar = "row->value_%s" % columnName
else:
keyVar = "row->%s" % columnName
valueVar = None
if type.is_smap():
print(" smap_init(&row->%s);" % columnName)
print(" for (size_t i = 0; i < datum->n; i++) {")
print(" smap_add(&row->%s," % columnName)
print(" datum->keys[i].string,")
print(" datum->values[i].string);")
print(" }")
elif (type.n_min == 1 and type.n_max == 1) or type.is_optional_pointer():
print("")
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_%s, &datum->keys[0].uuid));" % (keyVar, prefix, type.key.ref_table.name.lower(), prefix, type.key.ref_table.name.lower()))
if valueVar:
if not 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_%s, &datum->values[0].uuid));" % (valueVar, prefix, type.value.ref_table.name.lower(), prefix, type.value.ref_table.name.lower()))
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.maxsize:
print(" size_t n = MIN(%d, datum->n);" % type.n_max)
nMax = "n"
else:
nMax = "datum->n"
print(" %s = NULL;" % keyVar)
if valueVar:
print(" %s = NULL;" % valueVar)
print(" row->n_%s = 0;" % columnName)
print(" for (size_t i = 0; i < %s; i++) {" % nMax)
if type.key.ref_table:
print("""\
struct %s%s *keyRow = %s%s_cast(ovsdb_idl_get_row_arc(row_, &%stable_%s, &datum->keys[i].uuid));
if (!keyRow) {
continue;
}\
""" % (prefix, type.key.ref_table.name.lower(), prefix, type.key.ref_table.name.lower(), prefix, type.key.ref_table.name.lower()))
keySrc = "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_%s, &datum->values[i].uuid));
if (!valueRow) {
continue;
}\
""" % (prefix, type.value.ref_table.name.lower(), prefix, type.value.ref_table.name.lower(), prefix, type.value.ref_table.name.lower()))
valueSrc = "valueRow"
elif valueVar:
valueSrc = "datum->values[i].%s" % type.value.type.to_string()
print(" if (!row->n_%s) {" % (columnName))
print(" %s = xmalloc(%s * sizeof *%s);" % (
keyVar, nMax, keyVar))
if valueVar:
print(" %s = xmalloc(%s * sizeof *%s);" % (
valueVar, nMax, valueVar))
print(" }")
print(" %s[row->n_%s] = %s;" % (keyVar, columnName, keySrc))
if valueVar:
print(" %s[row->n_%s] = %s;" % (valueVar, columnName, valueSrc))
print(" row->n_%s++;" % columnName)
print(" }")
print("}")
# Unparse functions.
for columnName, column in sorted_columns(table):
type = column.type
if (type.is_smap() or (type.n_min != 1 or type.n_max != 1) and not type.is_optional_pointer()) or 'unparse' in column.extensions:
print('''
static void
%(s)s_unparse_%(c)s(struct ovsdb_idl_row *row_)
{
struct %(s)s *row = %(s)s_cast(row_);''' % {'s': structName,
'c': columnName})
if 'unparse' in column.extensions:
print(column.extensions["unparse"])
elif type.is_smap():
print(" smap_destroy(&row->%s);" % columnName)
else:
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})
# Generic Row Initialization function.
print("""
static void
%(s)s_init__(struct ovsdb_idl_row *row)
{
%(s)s_init(%(s)s_cast(row));
}""" % {'s': structName})
# Row Initialization function.
print("""
/* Clears the contents of 'row' in table "%(t)s". */
void
%(s)s_init(struct %(s)s *row)
{
memset(row, 0, sizeof *row); """ % {'s': structName, 't': tableName})
for columnName, column in sorted_columns(table):
if column.type.is_smap():
print(" smap_init(&row->%s);" % columnName)
elif (column.type.n_min == 1 and
column.type.n_max == 1 and
column.type.key.type == ovs.db.types.StringType and
not column.type.value):
print(" row->%s = \"\";" % columnName)
print("}")
# First, next functions.
print('''
/* Searches table "%(t)s" in 'idl' for a row with UUID 'uuid'. Returns
* a pointer to the row if there is one, otherwise a null pointer. */
const struct %(s)s *
%(s)s_get_for_uuid(const struct ovsdb_idl *idl, const struct uuid *uuid)
{
return %(s)s_cast(ovsdb_idl_get_row_for_uuid(idl, &%(p)stable_%(tl)s, uuid));
}
/* Searches table "%(t)s" for a row with UUID 'uuid'. Returns
* a pointer to the row if there is one, otherwise a null pointer. */
const struct %(s)s *
%(s)s_table_get_for_uuid(const struct %(s)s_table *table, const struct uuid *uuid)
{
const struct ovsdb_idl *idl = (const struct ovsdb_idl *) table;
return %(s)s_get_for_uuid(idl, uuid);
}
/* Returns a row in table "%(t)s" in 'idl', or a null pointer if that
* table is empty.
*
* Database tables are internally maintained as hash tables, so adding or
* removing rows while traversing the same table can cause some rows to be
* visited twice or not at apply. */
const struct %(s)s *
%(s)s_first(const struct ovsdb_idl *idl)
{
return %(s)s_cast(ovsdb_idl_first_row(idl, &%(p)stable_%(tl)s));
}
/* Returns a row following 'row' within its table, or a null pointer if 'row'
* is the last row in its table. */
const struct %(s)s *
%(s)s_next(const struct %(s)s *row)
{
return %(s)s_cast(ovsdb_idl_next_row(&row->header_));
}
unsigned int %(s)s_get_seqno(const struct ovsdb_idl *idl)
{
return ovsdb_idl_table_get_seqno(idl, &%(p)stable_%(tl)s);
}
unsigned int %(s)s_row_get_seqno(const struct %(s)s *row, enum ovsdb_idl_change change)
{
return ovsdb_idl_row_get_seqno(&row->header_, change);
}
const struct %(s)s *
%(s)s_track_get_first(const struct ovsdb_idl *idl)
{
return %(s)s_cast(ovsdb_idl_track_get_first(idl, &%(p)stable_%(tl)s));
}
const struct %(s)s
*%(s)s_track_get_next(const struct %(s)s *row)
{
return %(s)s_cast(ovsdb_idl_track_get_next(&row->header_));
}''' % {'s': structName,
'p': prefix,
'P': prefix.upper(),
't': tableName,
'tl': tableName.lower(),
'T': tableName.upper()})
print('''
/* Deletes 'row' from table "%(t)s". 'row' may be freed, so it must not be
* accessed afterward.
*
* The caller must have started a transaction with ovsdb_idl_txn_create(). */
void
%(s)s_delete(const struct %(s)s *row)
{
ovsdb_idl_txn_delete(&row->header_);
}
/* Inserts and returns a new row in the table "%(t)s" in the database
* with open transaction 'txn'.
*
* The new row is assigned a randomly generated provisional UUID.
* ovsdb-server will assign a different UUID when 'txn' is committed,
* but the IDL will replace any uses of the provisional UUID in the
* data to be to be committed by the UUID assigned by ovsdb-server. */
struct %(s)s *
%(s)s_insert(struct ovsdb_idl_txn *txn)
{
return %(s)s_cast(ovsdb_idl_txn_insert(txn, &%(p)stable_%(tl)s, NULL));
}
bool
%(s)s_is_updated(const struct %(s)s *row, enum %(s)s_column_id column)
{
return ovsdb_idl_track_is_updated(&row->header_, &%(s)s_columns[column]);
}''' % {'s': structName,
'p': prefix,
'P': prefix.upper(),
't': tableName,
'tl': tableName.lower(),
'T': tableName.upper()})
# Verify functions.
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
print('''
/* Causes the original contents of column "%(c)s" in 'row' to be
* verified as a prerequisite to completing the transaction. That is, if
* "%(c)s" in 'row' changed (or if 'row' was deleted) between the
* time that the IDL originally read its contents and the time that the
* transaction aborts and ovsdb_idl_txn_commit() returns TXN_TRY_AGAIN.
*
* The intention is that, to ensure that no transaction commits based on dirty
* reads, an application should call this function any time "%(c)s" is
* read as part of a read-modify-write operation.
*
* In some cases this function reduces to a no-op, because the current value
* of "%(c)s" is already known:
*
* - If 'row' is a row created by the current transaction (returned by
* %(s)s_insert()).
*
* - If "%(c)s" has already been modified (with
* %(s)s_set_%(c)s()) within the current transaction.
*
* Because of the latter property, always call this function *before*
* %(s)s_set_%(c)s() for a given read-modify-write.
*
* The caller must have started a transaction with ovsdb_idl_txn_create(). */
void
%(s)s_verify_%(c)s(const struct %(s)s *row)
{
ovsdb_idl_txn_verify(&row->header_, &%(s)s_col_%(c)s);
}''' % {'s': structName,
'S': structName.upper(),
'c': columnName,
'C': columnName.upper()})
# Get functions.
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
if column.type.value:
valueParam = ',\n\tenum ovsdb_atomic_type value_type OVS_UNUSED'
valueType = '\n ovs_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 from the "%(t)s" table 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().
*
* This function is rarely useful, since it is easier to access the value
* directly through the "%(c)s" member in %(s)s. */
const struct ovsdb_datum *
%(s)s_get_%(c)s(const struct %(s)s *row,
\tenum ovsdb_atomic_type key_type OVS_UNUSED%(v)s)
{
ovs_assert(key_type == %(kt)s);%(vt)s
return ovsdb_idl_read(&row->header_, &%(s)s_col_%(c)s);
}""" % {'t': tableName, 's': structName, 'c': columnName,
'kt': column.type.key.toAtomicType(),
'v': valueParam, 'vt': valueType, 'vc': valueComment})
# Set functions.
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
type = column.type
comment, members = cMembers(prefix, tableName, columnName,
column, True)
if type.is_smap():
print(comment)
print("""void
%(s)s_set_%(c)s(const struct %(s)s *row, const struct smap *%(c)s)
{
struct ovsdb_datum datum;
if (%(c)s) {
ovsdb_datum_from_smap(&datum, %(c)s);
} else {
ovsdb_datum_init_empty(&datum);
}
ovsdb_idl_txn_write(&row->header_,
&%(s)s_col_%(c)s,
&datum);
}
""" % {'t': tableName,
's': structName,
'S': structName.upper(),
'c': columnName,
'C': columnName.upper()})
continue
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(comment)
print("""\
void
%(s)s_set_%(c)s(const struct %(s)s *row, %(args)s)
{
struct ovsdb_datum datum;""" % {'s': structName,
'c': columnName,
'args': ', '.join(['%(type)s%(name)s'
% m for m in members])})
if type.n_min == 1 and type.n_max == 1:
print(" union ovsdb_atom key;")
if type.value:
print(" union ovsdb_atom value;")
print("")
print(" datum.n = 1;")
print(" datum.keys = &key;")
print(" " + type.key.assign_c_value_casting_away_const("key.%s" % type.key.type.to_string(), keyVar))
if type.value:
print(" datum.values = &value;")
print(" "+ type.value.assign_c_value_casting_away_const("value.%s" % type.value.type.to_string(), valueVar))
else:
print(" datum.values = NULL;")
txn_write_func = "ovsdb_idl_txn_write_clone"
elif type.is_optional_pointer():
print(" union ovsdb_atom key;")
print("")
print(" if (%s) {" % keyVar)
print(" datum.n = 1;")
print(" datum.keys = &key;")
print(" " + type.key.assign_c_value_casting_away_const("key.%s" % type.key.type.to_string(), keyVar))
print(" } else {")
print(" datum.n = 0;")
print(" datum.keys = NULL;")
print(" }")
print(" datum.values = NULL;")
txn_write_func = "ovsdb_idl_txn_write_clone"
elif type.n_max == 1:
print(" union ovsdb_atom key;")
print("")
print(" if (%s) {" % nVar)
print(" datum.n = 1;")
print(" datum.keys = &key;")
print(" " + type.key.assign_c_value_casting_away_const("key.%s" % type.key.type.to_string(), "*" + keyVar))
print(" } else {")
print(" datum.n = 0;")
print(" datum.keys = NULL;")
print(" }")
print(" datum.values = NULL;")
txn_write_func = "ovsdb_idl_txn_write_clone"
else:
print("")
print(" datum.n = %s;" % nVar)
print(" datum.keys = %s ? xmalloc(%s * sizeof *datum.keys) : NULL;" % (nVar, nVar))
if type.value:
print(" datum.values = xmalloc(%s * sizeof *datum.values);" % nVar)
else:
print(" datum.values = NULL;")
print(" for (size_t 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"
txn_write_func = "ovsdb_idl_txn_write"
print(" %(f)s(&row->header_, &%(s)s_col_%(c)s, &datum);" \
% {'f': txn_write_func,
's': structName,
'S': structName.upper(),
'c': columnName})
print("}")
# Update/Delete of partial map column functions
for columnName, column in sorted_columns(table):
if column.extensions.get('synthetic'):
continue
type = column.type
if type.is_map():
print('''
/* Sets an element of the "%(c)s" map column from the "%(t)s" table in 'row'
* to 'new_value' given the key value 'new_key'.
*
*/
void
%(s)s_update_%(c)s_setkey(const struct %(s)s *row, %(coltype)snew_key, %(valtype)snew_value)
{
struct ovsdb_datum *datum;
datum = xmalloc(sizeof *datum);
datum->n = 1;
datum->keys = xmalloc(datum->n * sizeof *datum->keys);
datum->values = xmalloc(datum->n * sizeof *datum->values);
''' % {'s': structName, 'c': columnName,'coltype':column.type.key.to_const_c_type(prefix),
'valtype':column.type.value.to_const_c_type(prefix), 'S': structName.upper(),
'C': columnName.upper(), 't': tableName})
print(" "+ type.key.copyCValue("datum->keys[0].%s" % type.key.type.to_string(), "new_key"))
print(" "+ type.value.copyCValue("datum->values[0].%s" % type.value.type.to_string(), "new_value"))
print('''
ovsdb_idl_txn_write_partial_map(&row->header_,
&%(s)s_col_%(c)s,
datum);
}''' % {'s': structName, 'c': columnName,'coltype':column.type.key.toCType(prefix),
'valtype':column.type.value.to_const_c_type(prefix), 'S': structName.upper()})
print('''
/* Deletes an element of the "%(c)s" map column from the "%(t)s" table in 'row'
* given the key value 'delete_key'.
*
*/
void
%(s)s_update_%(c)s_delkey(const struct %(s)s *row, %(coltype)sdelete_key)
{