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s4:dsdb Reload partition metadata if the main db updates

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This uses the fact that the primary DB does not change often.  Before
each operation, we see if the sequence number has changed.

Andrew Bartlett
This commit is contained in:
Andrew Bartlett
2009-10-14 12:57:03 +11:00
parent 18035251ad
commit e62200e253
3 changed files with 120 additions and 39 deletions
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38
source4/dsdb/samdb/ldb_modules/partition_init.c
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@ -159,6 +159,38 @@ static int partition_reload_metadata(struct ldb_module *module, struct partition
return LDB_SUCCESS;
}
int partition_reload_if_required(struct ldb_module *module,
struct partition_private_data *data)
{
uint64_t seq;
int ret;
TALLOC_CTX *mem_ctx = talloc_new(data);
if (!data) {
/* Not initilised yet */
return LDB_SUCCESS;
}
if (!mem_ctx) {
ldb_oom(ldb_module_get_ctx(module));
return LDB_ERR_OPERATIONS_ERROR;
}
ret = partition_primary_sequence_number(module, mem_ctx, LDB_SEQ_HIGHEST_SEQ, &seq);
if (ret != LDB_SUCCESS) {
talloc_free(mem_ctx);
return ret;
}
if (seq != data->metadata_seq) {
ret = partition_reload_metadata(module, data, mem_ctx, NULL);
if (ret != LDB_SUCCESS) {
talloc_free(mem_ctx);
return ret;
}
data->metadata_seq = seq;
}
talloc_free(mem_ctx);
return LDB_SUCCESS;
}
static const char **find_modules_for_dn(struct partition_private_data *data, struct ldb_dn *dn)
{
int i;
@ -577,6 +609,12 @@ int partition_init(struct ldb_module *module)
return LDB_ERR_OPERATIONS_ERROR;
}
ret = partition_primary_sequence_number(module, mem_ctx, LDB_SEQ_HIGHEST_SEQ, &data->metadata_seq);
if (ret != LDB_SUCCESS) {
talloc_free(mem_ctx);
return ret;
}
ret = partition_reload_metadata(module, data, mem_ctx, &msg);
if (ret != LDB_SUCCESS) {
return ret;