NAME

MongoDB::Error - MongoDB Driver Error classes

VERSION

version v0.999.998.5

SYNOPSIS

use MongoDB::Error;

MongoDB::Error->throw("a generic error");

MongoDB::DatabaseError->throw(
    message => $string,
    result => $hashref,
);

DESCRIPTION

This class defines a heirarchy of exception objects.

USAGE

Unless otherwise explictly 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.

METHODS

throw

MongoDB::Error->throw( "message" );
MongoDB::Error->throw( message => "message" );
MongoDB::Error->throw( $error_object );

EXCEPTION HIERARCHY

MongoDB::Error
    |
    |->MongoDB::AuthError
    |
    |->MongoDB::ConnectionError
    |   |
    |   |->MongoDB::HandshakeError
    |   |
    |   |->MongoDB::NetworkError
    |
    |->MongoDB::CursorNotFoundError
    |
    |->MongoDB::DatabaseError
    |   |
    |   |->MongoDB::DuplicateKeyError
    |   |
    |   |->MongoDB::NotMasterError
    |   |
    |   |->MongoDB::WriteError
    |   |
    |   |->MongoDB::WriteConcernError
    |
    |->MongoDB::DocumentError
    |
    |->MongoDB::GridFSError
    |
    |->MongoDB::InternalError
    |
    |->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::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 impliement 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::DocumentError

This error indicates a problem with a document to be inserted or replaced into the database.

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 Moose object system if the objects are used incorrectly.

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.

AUTHORS

• David Golden <david@mongodb.com>

• Mike Friedman <friedo@mongodb.com>

• Kristina Chodorow <kristina@mongodb.com>

• Florian Ragwitz <rafl@debian.org>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2015 by MongoDB, Inc..

This is free software, licensed under:

The Apache License, Version 2.0, January 2004

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