Provided by: libmongodb-perl_2.2.2-2_all 
NAME
MongoDB::Error - MongoDB Driver Error classes
VERSION
version v2.2.2
SYNOPSIS
use MongoDB::Error;
MongoDB::Error->throw("a generic error");
MongoDB::DatabaseError->throw(
message => $string,
result => $hashref,
);
DESCRIPTION
This class defines a hierarchy of exception objects.
USAGE
Unless otherwise explicitly documented, all driver methods throw exceptions if an error occurs.
To catch and handle errors, the Try::Tiny and Safe::Isa modules are recommended:
use Try::Tiny;
use Safe::Isa; # provides $_isa
try {
$coll->insert( $doc )
}
catch {
if ( $_->$_isa("MongoDB::DuplicateKeyError" ) ) {
...
}
else {
...
}
};
To retry failures automatically, consider using Try::Tiny::Retry.
EXCEPTION HIERARCHY
MongoDB::Error
|
|->MongoDB::AuthError
|
|->MongoDB::ConnectionError
| |
| |->MongoDB::HandshakeError
| |
| |->MongoDB::NetworkError
|
|->MongoDB::ConfigurationError
|
|->MongoDB::DatabaseError
| |
| |->MongoDB::CursorNotFoundError
| |
| |->MongoDB::DuplicateKeyError
| |
| |->MongoDB::NotMasterError
| |
| |->MongoDB::WriteError
| |
| |->MongoDB::WriteConcernError
|
|->MongoDB::DecodingError
|
|->MongoDB::DocumentError
|
|->MongoDB::GridFSError
|
|->MongoDB::InternalError
|
|->MongoDB::InvalidOperationError
|
|->MongoDB::ProtocolError
|
|->MongoDB::SelectionError
|
|->MongoDB::TimeoutError
| |
| |->MongoDB::ExecutionTimeout
| |
| |->MongoDB::NetworkTimeout
|
|->MongoDB::UsageError
All classes inherit from "MongoDB::Error".
All error classes have the attribute:
• message — a text representation of the error
MongoDB::AuthError
This error indicates a problem with authentication, either in the underlying mechanism or a problem
authenticating with the server.
MongoDB::ConnectionError
Errors related to network connections.
MongoDB::HandshakeError
This error is thrown when a connection has been made, but SSL or authentication handshakes fail.
MongoDB::NetworkError
This error is thrown when a socket error occurs, when the wrong number of bytes are read, or other wire-
related errors occur.
MongoDB::ConfigurationError
This error is thrown when there is a configuration error between the MongoDB deployment and the
configuration of the client, such as when trying to use explicit sessions on a MongoDB < 3.6
MongoDB::CursorNotFoundError
This error indicates that a cursor timed out on a server.
MongoDB::DatabaseError
Errors related to database operations. Specifically, when an error of this type occurs, the driver has
received an error condition from the server.
Attributes include:
• result — response from a database command; this must implement the "last_errmsg" method
• code — numeric error code; see "ERROR CODES"; if no code was provided by the database, the
"UNKNOWN_ERROR" code will be substituted instead
MongoDB::DuplicateKeyError
This error indicates that a write attempted to create a document with a duplicate key in a collection
with a unique index. The "result" attribute is a result object.
MongoDB::NotMasterError
This error indicates that a write or other state-modifying operation was attempted on a server that was
not a primary. The "result" attribute is a MongoDB::CommandResult object.
MongoDB::WriteError
Errors indicating failure of a write command. The "result" attribute is a result object.
MongoDB::WriteConcernError
Errors indicating failure of a write concern. The "result" attribute is a result object.
MongoDB::DecodingError
This error indicates a problem during BSON decoding; it wraps the error provided by the underlying BSON
encoder. Note: Encoding errors will be thrown as a "MongoDB::DocumentError".
MongoDB::DocumentError
This error indicates a problem with a document to be inserted or replaced into the database, or used as
an update document.
Attributes include:
• document — the document that caused the error
MongoDB::GridFSError
Errors related to GridFS operations, such a corrupted file.
MongoDB::InternalError
Errors that indicate problems in the driver itself, typically when something unexpected is detected.
These should be reported as potential bugs.
MongoDB::ProtocolError
Errors related to the MongoDB wire protocol, typically problems parsing a database response packet.
MongoDB::SelectionError
When server selection fails for a given operation, this is thrown. For example, attempting a write when
no primary is available or reading with a specific mode and tag set and no servers match.
MongoDB::TimeoutError
These errors indicate a user-specified timeout has been exceeded.
MongoDB::ExecutionTimeout
This error is thrown when a query or command fails because "max_time_ms" has been reached. The "result"
attribute is a MongoDB::CommandResult object.
MongoDB::NetworkTimeout
This error is thrown when a network operation exceeds a timeout, typically "connect_timeout_ms" or
"socket_timeout_ms".
MongoDB::UsageError
Indicates invalid arguments or configuration options. Not all usage errors will throw this — only ones
originating directly from the MongoDB::* library files. Some type and usage errors will originate from
the Type::Tiny library if the objects are used incorrectly.
Also used to indicate usage errors for transaction commands.
ERROR CODES
The following error code constants are automatically exported by this module.
BAD_VALUE => 2,
UNKNOWN_ERROR => 8,
NAMESPACE_NOT_FOUND => 26,
EXCEEDED_TIME_LIMIT => 50,
COMMAND_NOT_FOUND => 59,
WRITE_CONCERN_ERROR => 64,
NOT_MASTER => 10107,
DUPLICATE_KEY => 11000,
DUPLICATE_KEY_UPDATE => 11001, # legacy before 2.6
DUPLICATE_KEY_CAPPED => 12582, # legacy before 2.6
UNRECOGNIZED_COMMAND => 13390, # mongos error before 2.4
NOT_MASTER_NO_SLAVE_OK => 13435,
NOT_MASTER_OR_SECONDARY => 13436,
CANT_OPEN_DB_IN_READ_LOCK => 15927,
This is a very, very small subset of error codes possible from the server, but covers some of the more
common ones seen by drivers.
Note:
• Only "MongoDB::DatabaseError" objects have a "code" attribute.
• The database uses multiple write concern error codes. The driver maps them all to
WRITE_CONCERN_ERROR for consistency and convenience.
ERROR LABELS
From MongoDB 4.0 onwards, errors may contain an error labels field. This field is populated for extra
information from either the server or the driver, depending on the error.
Known error labels include (but are not limited to):
• "TransientTransactionError" - added when network errors are encountered inside a transaction.
• "UnknownTransactionCommitResult" - added when a transaction commit may not have been able to satisfy
the provided write concern.
AUTHORS
• David Golden <david@mongodb.com>
• Rassi <rassi@mongodb.com>
• Mike Friedman <friedo@friedo.com>
• Kristina Chodorow <k.chodorow@gmail.com>
• Florian Ragwitz <rafl@debian.org>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2020 by MongoDB, Inc.
This is free software, licensed under:
The Apache License, Version 2.0, January 2004
perl v5.34.0 2022-06-30 MongoDB::Error(3pm)