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mongoc-write-command.c
1294 lines (1088 loc) · 40.3 KB
/
mongoc-write-command.c
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/*
* Copyright 2014 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <bson.h>
#include "mongoc-client-private.h"
#include "mongoc-client-session-private.h"
#include "mongoc-error.h"
#include "mongoc-trace-private.h"
#include "mongoc-write-command-private.h"
#include "mongoc-write-command-legacy-private.h"
#include "mongoc-write-concern-private.h"
#include "mongoc-util-private.h"
/*
* TODO:
*
* - Remove error parameter to ops, favor result->error.
*/
typedef void (*mongoc_write_op_t) (mongoc_write_command_t *command,
mongoc_client_t *client,
mongoc_server_stream_t *server_stream,
const char *database,
const char *collection,
uint32_t offset,
mongoc_write_result_t *result,
bson_error_t *error);
/* indexed by MONGOC_WRITE_COMMAND_DELETE, INSERT, UPDATE */
static const char *gCommandNames[] = {"delete", "insert", "update"};
static const char *gCommandFields[] = {"deletes", "documents", "updates"};
static const uint32_t gCommandFieldLens[] = {7, 9, 7};
static mongoc_write_op_t gLegacyWriteOps[3] = {
_mongoc_write_command_delete_legacy,
_mongoc_write_command_insert_legacy,
_mongoc_write_command_update_legacy};
const char *
_mongoc_command_type_to_name (int command_type)
{
return gCommandNames[command_type];
}
const char *
_mongoc_command_type_to_field_name (int command_type)
{
return gCommandFields[command_type];
}
void
_mongoc_write_command_insert_append (mongoc_write_command_t *command,
const bson_t *document)
{
bson_iter_t iter;
bson_oid_t oid;
bson_t tmp;
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (command->type == MONGOC_WRITE_COMMAND_INSERT);
BSON_ASSERT (document);
BSON_ASSERT (document->len >= 5);
/*
* If the document does not contain an "_id" field, we need to generate
* a new oid for "_id".
*/
if (!bson_iter_init_find (&iter, document, "_id")) {
bson_init (&tmp);
bson_oid_init (&oid, NULL);
BSON_APPEND_OID (&tmp, "_id", &oid);
bson_concat (&tmp, document);
_mongoc_buffer_append (&command->payload, bson_get_data (&tmp), tmp.len);
bson_destroy (&tmp);
} else {
_mongoc_buffer_append (
&command->payload, bson_get_data (document), document->len);
}
command->n_documents++;
EXIT;
}
void
_mongoc_write_command_update_append (mongoc_write_command_t *command,
const bson_t *selector,
const bson_t *update,
const bson_t *opts)
{
bson_t document;
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (command->type == MONGOC_WRITE_COMMAND_UPDATE);
BSON_ASSERT (selector && update);
bson_init (&document);
BSON_APPEND_DOCUMENT (&document, "q", selector);
BSON_APPEND_DOCUMENT (&document, "u", update);
if (opts) {
bson_iter_t iter;
bson_concat (&document, opts);
command->flags.has_collation |= bson_has_field (opts, "collation");
if (bson_iter_init_find (&iter, opts, "multi") &&
bson_iter_as_bool (&iter)) {
command->flags.has_multi_write = true;
}
}
_mongoc_buffer_append (
&command->payload, bson_get_data (&document), document.len);
command->n_documents++;
bson_destroy (&document);
EXIT;
}
void
_mongoc_write_command_delete_append (mongoc_write_command_t *command,
const bson_t *selector,
const bson_t *opts)
{
bson_t document;
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (command->type == MONGOC_WRITE_COMMAND_DELETE);
BSON_ASSERT (selector);
BSON_ASSERT (selector->len >= 5);
bson_init (&document);
BSON_APPEND_DOCUMENT (&document, "q", selector);
if (opts) {
bson_iter_t iter;
bson_concat (&document, opts);
command->flags.has_collation |= bson_has_field (opts, "collation");
if (bson_iter_init_find (&iter, opts, "limit") &&
bson_iter_as_int64 (&iter) != 1) {
command->flags.has_multi_write = true;
}
}
_mongoc_buffer_append (
&command->payload, bson_get_data (&document), document.len);
command->n_documents++;
bson_destroy (&document);
EXIT;
}
void
_mongoc_write_command_init_bulk (mongoc_write_command_t *command,
int type,
mongoc_bulk_write_flags_t flags,
int64_t operation_id,
const bson_t *opts)
{
ENTRY;
BSON_ASSERT (command);
command->type = type;
command->flags = flags;
command->operation_id = operation_id;
if (!bson_empty0 (opts)) {
bson_copy_to (opts, &command->cmd_opts);
} else {
bson_init (&command->cmd_opts);
}
_mongoc_buffer_init (&command->payload, NULL, 0, NULL, NULL);
command->n_documents = 0;
EXIT;
}
void
_mongoc_write_command_init_insert (mongoc_write_command_t *command, /* IN */
const bson_t *document, /* IN */
const bson_t *cmd_opts, /* IN */
mongoc_bulk_write_flags_t flags, /* IN */
int64_t operation_id, /* IN */
bool allow_bulk_op_insert) /* IN */
{
ENTRY;
BSON_ASSERT (command);
_mongoc_write_command_init_bulk (
command, MONGOC_WRITE_COMMAND_INSERT, flags, operation_id, cmd_opts);
command->u.insert.allow_bulk_op_insert = (uint8_t) allow_bulk_op_insert;
/* must handle NULL document from mongoc_collection_insert_bulk */
if (document) {
_mongoc_write_command_insert_append (command, document);
}
EXIT;
}
void
_mongoc_write_command_init_delete (mongoc_write_command_t *command, /* IN */
const bson_t *selector, /* IN */
const bson_t *cmd_opts, /* IN */
const bson_t *opts, /* IN */
mongoc_bulk_write_flags_t flags, /* IN */
int64_t operation_id) /* IN */
{
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (selector);
_mongoc_write_command_init_bulk (
command, MONGOC_WRITE_COMMAND_DELETE, flags, operation_id, cmd_opts);
_mongoc_write_command_delete_append (command, selector, opts);
EXIT;
}
void
_mongoc_write_command_init_update (mongoc_write_command_t *command, /* IN */
const bson_t *selector, /* IN */
const bson_t *update, /* IN */
const bson_t *opts, /* IN */
mongoc_bulk_write_flags_t flags, /* IN */
int64_t operation_id) /* IN */
{
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (selector);
BSON_ASSERT (update);
_mongoc_write_command_init_bulk (
command, MONGOC_WRITE_COMMAND_UPDATE, flags, operation_id, NULL);
_mongoc_write_command_update_append (command, selector, update, opts);
EXIT;
}
/* takes initialized bson_t *doc and begins formatting a write command */
void
_mongoc_write_command_init (bson_t *doc,
mongoc_write_command_t *command,
const char *collection,
const mongoc_write_concern_t *write_concern)
{
ENTRY;
if (!command->n_documents) {
EXIT;
}
BSON_APPEND_UTF8 (doc, gCommandNames[command->type], collection);
if (write_concern && !mongoc_write_concern_is_default (write_concern)) {
BSON_APPEND_DOCUMENT (doc,
"writeConcern",
_mongoc_write_concern_get_bson (
(mongoc_write_concern_t *) (write_concern)));
}
BSON_APPEND_BOOL (doc, "ordered", command->flags.ordered);
if (command->flags.bypass_document_validation !=
MONGOC_BYPASS_DOCUMENT_VALIDATION_DEFAULT) {
BSON_APPEND_BOOL (doc,
"bypassDocumentValidation",
!!command->flags.bypass_document_validation);
}
EXIT;
}
/*
*-------------------------------------------------------------------------
*
* _mongoc_write_command_too_large_error --
*
* Fill a bson_error_t and optional bson_t with error info after
* receiving a document for bulk insert, update, or remove that is
* larger than max_bson_size.
*
* "err_doc" should be NULL or an empty initialized bson_t.
*
* Returns:
* None.
*
* Side effects:
* "error" and optionally "err_doc" are filled out.
*
*-------------------------------------------------------------------------
*/
void
_mongoc_write_command_too_large_error (bson_error_t *error,
int32_t idx,
int32_t len,
int32_t max_bson_size)
{
bson_set_error (error,
MONGOC_ERROR_BSON,
MONGOC_ERROR_BSON_INVALID,
"Document %u is too large for the cluster. "
"Document is %u bytes, max is %d.",
idx,
len,
max_bson_size);
}
void
_empty_error (mongoc_write_command_t *command, bson_error_t *error)
{
static const uint32_t codes[] = {MONGOC_ERROR_COLLECTION_DELETE_FAILED,
MONGOC_ERROR_COLLECTION_INSERT_FAILED,
MONGOC_ERROR_COLLECTION_UPDATE_FAILED};
bson_set_error (error,
MONGOC_ERROR_COLLECTION,
codes[command->type],
"Cannot do an empty %s",
gCommandNames[command->type]);
}
bool
_mongoc_write_command_will_overflow (uint32_t len_so_far,
uint32_t document_len,
uint32_t n_documents_written,
int32_t max_bson_size,
int32_t max_write_batch_size)
{
/* max BSON object size + 16k bytes.
* server guarantees there is enough room: SERVER-10643
*/
int32_t max_cmd_size = max_bson_size + 16384;
BSON_ASSERT (max_bson_size);
if (len_so_far + document_len > max_cmd_size) {
return true;
} else if (max_write_batch_size > 0 &&
n_documents_written >= max_write_batch_size) {
return true;
}
return false;
}
static void
_mongoc_write_opmsg (mongoc_write_command_t *command,
mongoc_client_t *client,
mongoc_server_stream_t *server_stream,
const char *database,
const char *collection,
const mongoc_write_concern_t *write_concern,
uint32_t index_offset,
mongoc_client_session_t *cs,
mongoc_write_result_t *result,
bson_error_t *error)
{
mongoc_cmd_parts_t parts;
bson_iter_t iter;
bson_t cmd;
bson_t reply;
bool ret = false;
int32_t max_msg_size;
int32_t max_bson_obj_size;
int32_t max_document_count;
uint32_t header;
uint32_t payload_batch_size = 0;
uint32_t payload_total_offset = 0;
bool ship_it = false;
int document_count = 0;
int32_t len;
mongoc_server_stream_t *retry_server_stream = NULL;
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (client);
BSON_ASSERT (database);
BSON_ASSERT (server_stream);
BSON_ASSERT (collection);
/* MongoDB has a extra allowance to allow updating 16mb document,
* as the update operators would otherwise overflow the 16mb object limit
*/
#define BSON_OBJECT_ALLOWANCE (16 * 1024)
max_bson_obj_size = mongoc_server_stream_max_bson_obj_size (server_stream);
max_msg_size = mongoc_server_stream_max_msg_size (server_stream);
max_document_count =
mongoc_server_stream_max_write_batch_size (server_stream);
bson_init (&cmd);
_mongoc_write_command_init (&cmd, command, collection, write_concern);
mongoc_cmd_parts_init (&parts, client, database, MONGOC_QUERY_NONE, &cmd);
mongoc_cmd_parts_set_session (&parts, cs);
parts.assembled.operation_id = command->operation_id;
parts.is_write_command = true;
parts.assembled.is_acknowledged =
mongoc_write_concern_is_acknowledged (write_concern);
/* Write commands that include multi-document operations are not retryable.
* Set this explicitly so that mongoc_cmd_parts_assemble does not need to
* inspect the command body later. */
parts.allow_txn_number = command->flags.has_multi_write
? MONGOC_CMD_PARTS_ALLOW_TXN_NUMBER_NO
: MONGOC_CMD_PARTS_ALLOW_TXN_NUMBER_YES;
bson_iter_init (&iter, &command->cmd_opts);
if (!mongoc_cmd_parts_append_opts (
&parts, &iter, server_stream->sd->max_wire_version, error)) {
bson_destroy (&cmd);
mongoc_cmd_parts_cleanup (&parts);
EXIT;
}
if (!mongoc_cmd_parts_assemble (&parts, server_stream, error)) {
bson_destroy (&cmd);
mongoc_cmd_parts_cleanup (&parts);
EXIT;
}
/*
* OP_MSG header == 16 byte
* + 4 bytes flagBits
* + 1 byte payload type = 1
* + 1 byte payload type = 2
* + 4 byte size of payload
* == 26 bytes opcode overhead
* + X Full command document {insert: "test", writeConcern: {...}}
* + Y command identifier ("documents", "deletes", "updates") ( + \0)
*/
header =
26 + parts.assembled.command->len + gCommandFieldLens[command->type] + 1;
do {
memcpy (&len,
command->payload.data + payload_batch_size + payload_total_offset,
4);
len = BSON_UINT32_FROM_LE (len);
if (len > max_bson_obj_size + BSON_OBJECT_ALLOWANCE) {
/* Quit if the document is too large */
_mongoc_write_command_too_large_error (
error, index_offset, len, max_bson_obj_size);
result->failed = true;
break;
} else if ((payload_batch_size + header) + len <= max_msg_size) {
/* The current batch is still under max batch size in bytes */
payload_batch_size += len;
/* If this document filled the maximum document count */
if (++document_count == max_document_count) {
ship_it = true;
/* If this document is the last document we have */
} else if (payload_batch_size + payload_total_offset ==
command->payload.len) {
ship_it = true;
} else {
ship_it = false;
}
} else {
ship_it = true;
}
if (ship_it) {
bool is_retryable = parts.is_retryable_write;
/* Seek past the document offset we have already sent */
parts.assembled.payload = command->payload.data + payload_total_offset;
/* Only send the documents up to this size */
parts.assembled.payload_size = payload_batch_size;
parts.assembled.payload_identifier = gCommandFields[command->type];
/* increment the transaction number for the first attempt of each
* retryable write command */
if (is_retryable) {
bson_iter_t txn_number_iter;
BSON_ASSERT (bson_iter_init_find (
&txn_number_iter, parts.assembled.command, "txnNumber"));
bson_iter_overwrite_int64 (
&txn_number_iter,
++parts.assembled.session->server_session->txn_number);
}
retry:
ret = mongoc_cluster_run_command_monitored (
&client->cluster, &parts.assembled, &reply, error);
/* Add this batch size so we skip these documents next time */
payload_total_offset += payload_batch_size;
payload_batch_size = 0;
/* If a retryable error is encountered and the write is retryable,
* select a new writable stream and retry. If server selection fails or
* the selected server does not support retryable writes, fall through
* and allow the original error to be reported. */
if (!ret && is_retryable &&
(error->domain == MONGOC_ERROR_STREAM ||
mongoc_cluster_is_not_master_error (error))) {
bson_error_t ignored_error;
/* each write command may be retried at most once */
is_retryable = false;
if (retry_server_stream) {
mongoc_server_stream_cleanup (retry_server_stream);
}
retry_server_stream = mongoc_cluster_stream_for_writes (
&client->cluster, &ignored_error);
if (retry_server_stream &&
retry_server_stream->sd->max_wire_version >=
WIRE_VERSION_RETRY_WRITES) {
parts.assembled.server_stream = retry_server_stream;
GOTO (retry);
}
}
if (!ret) {
result->failed = true;
result->must_stop = true;
}
/* Result merge needs to know the absolute index for a document
* so it can rewrite the error message which contains the relative
* document index per batch
*/
_mongoc_write_result_merge (result, command, &reply, index_offset);
index_offset += document_count;
document_count = 0;
bson_destroy (&reply);
}
/* While we have more documents to write */
} while (payload_total_offset < command->payload.len);
bson_destroy (&cmd);
mongoc_cmd_parts_cleanup (&parts);
if (retry_server_stream) {
mongoc_server_stream_cleanup (retry_server_stream);
}
if (ret) {
/* if a retry succeeded, clear the initial error */
memset (&result->error, 0, sizeof (bson_error_t));
}
EXIT;
}
void
_append_array_from_command (mongoc_write_command_t *command, bson_t *bson)
{
bson_t ar;
bson_reader_t *reader;
char str[16];
uint32_t i = 0;
const char *key;
bool eof;
const bson_t *current;
reader =
bson_reader_new_from_data (command->payload.data, command->payload.len);
bson_append_array_begin (bson,
gCommandFields[command->type],
gCommandFieldLens[command->type],
&ar);
while ((current = bson_reader_read (reader, &eof))) {
bson_uint32_to_string (i, &key, str, sizeof str);
BSON_APPEND_DOCUMENT (&ar, key, current);
i++;
}
bson_append_array_end (bson, &ar);
bson_reader_destroy (reader);
}
static void
_mongoc_write_opquery (mongoc_write_command_t *command,
mongoc_client_t *client,
mongoc_server_stream_t *server_stream,
const char *database,
const char *collection,
const mongoc_write_concern_t *write_concern,
uint32_t offset,
mongoc_client_session_t *session,
mongoc_write_result_t *result,
bson_error_t *error)
{
mongoc_cmd_parts_t parts;
bson_iter_t iter;
const char *key;
uint32_t len = 0;
bson_t ar;
bson_t cmd;
bson_t reply;
char str[16];
bool has_more;
bool ret = false;
uint32_t i;
int32_t max_bson_obj_size;
int32_t max_write_batch_size;
uint32_t overhead;
uint32_t key_len;
int data_offset = 0;
bson_reader_t *reader;
const bson_t *bson;
bool eof;
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (client);
BSON_ASSERT (database);
BSON_ASSERT (server_stream);
BSON_ASSERT (collection);
bson_init (&cmd);
max_bson_obj_size = mongoc_server_stream_max_bson_obj_size (server_stream);
max_write_batch_size =
mongoc_server_stream_max_write_batch_size (server_stream);
again:
has_more = false;
i = 0;
_mongoc_write_command_init (&cmd, command, collection, write_concern);
/* 1 byte to specify array type, 1 byte for field name's null terminator */
overhead = cmd.len + 2 + gCommandFieldLens[command->type];
reader = bson_reader_new_from_data (command->payload.data + data_offset,
command->payload.len - data_offset);
bson_append_array_begin (&cmd,
gCommandFields[command->type],
gCommandFieldLens[command->type],
&ar);
while ((bson = bson_reader_read (reader, &eof))) {
key_len = (uint32_t) bson_uint32_to_string (i, &key, str, sizeof str);
len = bson->len;
/* 1 byte to specify document type, 1 byte for key's null terminator */
if (_mongoc_write_command_will_overflow (overhead,
key_len + len + 2 + ar.len,
i,
max_bson_obj_size,
max_write_batch_size)) {
has_more = true;
break;
}
BSON_APPEND_DOCUMENT (&ar, key, bson);
data_offset += len;
i++;
}
bson_append_array_end (&cmd, &ar);
if (!i) {
_mongoc_write_command_too_large_error (error, i, len, max_bson_obj_size);
result->failed = true;
result->must_stop = true;
ret = false;
if (bson) {
data_offset += len;
}
} else {
mongoc_cmd_parts_init (&parts, client, database, MONGOC_QUERY_NONE, &cmd);
mongoc_cmd_parts_set_session (&parts, session);
parts.is_write_command = true;
parts.assembled.operation_id = command->operation_id;
parts.assembled.is_acknowledged =
mongoc_write_concern_is_acknowledged (write_concern);
bson_iter_init (&iter, &command->cmd_opts);
if (!mongoc_cmd_parts_append_opts (
&parts, &iter, server_stream->sd->max_wire_version, error)) {
bson_destroy (&cmd);
mongoc_cmd_parts_cleanup (&parts);
EXIT;
}
ret = mongoc_cmd_parts_assemble (&parts, server_stream, error);
if (ret) {
ret = mongoc_cluster_run_command_monitored (
&client->cluster, &parts.assembled, &reply, error);
} else {
/* assembling failed */
result->must_stop = true;
bson_init (&reply);
}
if (!ret) {
result->failed = true;
if (bson_empty (&reply)) {
/* assembling failed, or a network error running the command */
result->must_stop = true;
}
}
if (session) {
_mongoc_client_session_handle_reply (
session,
mongoc_write_concern_is_acknowledged (write_concern),
&reply);
}
_mongoc_write_result_merge (result, command, &reply, offset);
offset += i;
bson_destroy (&reply);
mongoc_cmd_parts_cleanup (&parts);
}
bson_reader_destroy (reader);
if (has_more && (ret || !command->flags.ordered) && !result->must_stop) {
bson_reinit (&cmd);
GOTO (again);
}
bson_destroy (&cmd);
EXIT;
}
void
_mongoc_write_command_execute (
mongoc_write_command_t *command, /* IN */
mongoc_client_t *client, /* IN */
mongoc_server_stream_t *server_stream, /* IN */
const char *database, /* IN */
const char *collection, /* IN */
const mongoc_write_concern_t *write_concern, /* IN */
uint32_t offset, /* IN */
mongoc_client_session_t *cs, /* IN */
mongoc_write_result_t *result) /* OUT */
{
ENTRY;
BSON_ASSERT (command);
BSON_ASSERT (client);
BSON_ASSERT (server_stream);
BSON_ASSERT (database);
BSON_ASSERT (collection);
BSON_ASSERT (result);
if (!write_concern) {
write_concern = client->write_concern;
}
if (!mongoc_write_concern_is_valid (write_concern)) {
bson_set_error (&result->error,
MONGOC_ERROR_COMMAND,
MONGOC_ERROR_COMMAND_INVALID_ARG,
"The write concern is invalid.");
result->failed = true;
EXIT;
}
if (command->flags.has_collation) {
if (!mongoc_write_concern_is_acknowledged (write_concern)) {
result->failed = true;
bson_set_error (&result->error,
MONGOC_ERROR_COMMAND,
MONGOC_ERROR_COMMAND_INVALID_ARG,
"Cannot set collation for unacknowledged writes");
EXIT;
}
if (server_stream->sd->max_wire_version < WIRE_VERSION_COLLATION) {
bson_set_error (&result->error,
MONGOC_ERROR_COMMAND,
MONGOC_ERROR_PROTOCOL_BAD_WIRE_VERSION,
"Collation is not supported by the selected server");
result->failed = true;
EXIT;
}
}
if (command->flags.bypass_document_validation !=
MONGOC_BYPASS_DOCUMENT_VALIDATION_DEFAULT) {
if (!mongoc_write_concern_is_acknowledged (write_concern)) {
result->failed = true;
bson_set_error (
&result->error,
MONGOC_ERROR_COMMAND,
MONGOC_ERROR_COMMAND_INVALID_ARG,
"Cannot set bypassDocumentValidation for unacknowledged writes");
EXIT;
}
}
if (command->payload.len == 0) {
_empty_error (command, &result->error);
EXIT;
}
if (server_stream->sd->max_wire_version >= WIRE_VERSION_OP_MSG) {
_mongoc_write_opmsg (command,
client,
server_stream,
database,
collection,
write_concern,
offset,
cs,
result,
&result->error);
} else {
if (mongoc_write_concern_is_acknowledged (write_concern)) {
_mongoc_write_opquery (command,
client,
server_stream,
database,
collection,
write_concern,
offset,
cs,
result,
&result->error);
} else {
gLegacyWriteOps[command->type](command,
client,
server_stream,
database,
collection,
offset,
result,
&result->error);
}
}
EXIT;
}
void
_mongoc_write_command_destroy (mongoc_write_command_t *command)
{
ENTRY;
if (command) {
bson_destroy (&command->cmd_opts);
_mongoc_buffer_destroy (&command->payload);
}
EXIT;
}
void
_mongoc_write_result_init (mongoc_write_result_t *result) /* IN */
{
ENTRY;
BSON_ASSERT (result);
memset (result, 0, sizeof *result);
bson_init (&result->upserted);
bson_init (&result->writeConcernErrors);
bson_init (&result->writeErrors);
EXIT;
}
void
_mongoc_write_result_destroy (mongoc_write_result_t *result)
{
ENTRY;
BSON_ASSERT (result);
bson_destroy (&result->upserted);
bson_destroy (&result->writeConcernErrors);
bson_destroy (&result->writeErrors);
EXIT;
}
void
_mongoc_write_result_append_upsert (mongoc_write_result_t *result,
int32_t idx,
const bson_value_t *value)
{
bson_t child;
const char *keyptr = NULL;
char key[12];
int len;
BSON_ASSERT (result);
BSON_ASSERT (value);
len = (int) bson_uint32_to_string (
result->upsert_append_count, &keyptr, key, sizeof key);
bson_append_document_begin (&result->upserted, keyptr, len, &child);
BSON_APPEND_INT32 (&child, "index", idx);
BSON_APPEND_VALUE (&child, "_id", value);
bson_append_document_end (&result->upserted, &child);
result->upsert_append_count++;
}
int32_t
_mongoc_write_result_merge_arrays (uint32_t offset,
mongoc_write_result_t *result, /* IN */
bson_t *dest, /* IN */
bson_iter_t *iter) /* IN */
{
const bson_value_t *value;
bson_iter_t ar;
bson_iter_t citer;
int32_t idx;
int32_t count = 0;
int32_t aridx;
bson_t child;
const char *keyptr = NULL;
char key[12];
int len;
ENTRY;
BSON_ASSERT (result);
BSON_ASSERT (dest);
BSON_ASSERT (iter);
BSON_ASSERT (BSON_ITER_HOLDS_ARRAY (iter));
aridx = bson_count_keys (dest);
if (bson_iter_recurse (iter, &ar)) {
while (bson_iter_next (&ar)) {
if (BSON_ITER_HOLDS_DOCUMENT (&ar) &&
bson_iter_recurse (&ar, &citer)) {
len =
(int) bson_uint32_to_string (aridx++, &keyptr, key, sizeof key);
bson_append_document_begin (dest, keyptr, len, &child);
while (bson_iter_next (&citer)) {
if (BSON_ITER_IS_KEY (&citer, "index")) {
idx = bson_iter_int32 (&citer) + offset;
BSON_APPEND_INT32 (&child, "index", idx);
} else {
value = bson_iter_value (&citer);
BSON_APPEND_VALUE (&child, bson_iter_key (&citer), value);
}
}
bson_append_document_end (dest, &child);
count++;
}
}
}
RETURN (count);
}
void