Struct mongodb::options::ClientOptions

pub struct ClientOptions {
    pub hosts: Vec<StreamAddress>,
    pub app_name: Option<String>,
    pub cmap_event_handler: Option<Arc<dyn CmapEventHandler>>,
    pub command_event_handler: Option<Arc<dyn CommandEventHandler>>,
    pub connect_timeout: Option<Duration>,
    pub credential: Option<Credential>,
    pub direct_connection: Option<bool>,
    pub heartbeat_freq: Option<Duration>,
    pub local_threshold: Option<Duration>,
    pub max_idle_time: Option<Duration>,
    pub max_pool_size: Option<u32>,
    pub min_pool_size: Option<u32>,
    pub read_concern: Option<ReadConcern>,
    pub repl_set_name: Option<String>,
    pub selection_criteria: Option<SelectionCriteria>,
    pub server_selection_timeout: Option<Duration>,
    pub tls: Option<Tls>,
    pub wait_queue_timeout: Option<Duration>,
    pub write_concern: Option<WriteConcern>,
    // some fields omitted
}

Contains the options that can be used to create a new Client.

Fields

hosts: Vec<StreamAddress>

The initial list of seeds that the Client should connect to.

Note that by default, the driver will autodiscover other nodes in the cluster. To connect directly to a single server (rather than autodiscovering the rest of the cluster), set the direct field to true.

app_name: Option<String>

The application name that the Client will send to the server as part of the handshake. This can be used in combination with the server logs to determine which Client is connected to a server.

cmap_event_handler: Option<Arc<dyn CmapEventHandler>>

The handler that should process all Connection Monitoring and Pooling events. See the CmapEventHandler type documentation for more details.

command_event_handler: Option<Arc<dyn CommandEventHandler>>

The handler that should process all command-related events. See the CommandEventHandler type documentation for more details.

connect_timeout: Option<Duration>

The connect timeout passed to each underlying TcpStream when attemtping to connect to the server.

The default value is 10 seconds.

credential: Option<Credential>

The credential to use for authenticating connections made by this client.

direct_connection: Option<bool>

Specifies whether the Client should directly connect to a single host rather than autodiscover all servers in the cluster.

The default value is false.

heartbeat_freq: Option<Duration>

The amount of time each monitoring thread should wait between sending an isMaster command to its respective server.

The default value is 10 seconds.

local_threshold: Option<Duration>

When running a read operation with a ReadPreference that allows selecting secondaries, local_threshold is used to determine how much longer the average round trip time between the driver and server is allowed compared to the least round trip time of all the suitable servers. For example, if the average round trip times of the suitable servers are 5 ms, 10 ms, and 15 ms, and the local threshold is 8 ms, then the first two servers are within the latency window and could be chosen for the operation, but the last one is not.

A value of zero indicates that there is no latency window, so only the server with the lowest average round trip time is eligible.

The default value is 15 ms.

max_idle_time: Option<Duration>

The amount of time that a connection can remain idle in a connection pool before being closed. A value of zero indicates that connections should not be closed due to being idle.

By default, connections will not be closed due to being idle.

max_pool_size: Option<u32>

The maximum amount of connections that the Client should allow to be created in a connection pool for a given server. If an operation is attempted on a server while max_pool_size connections are checked out, the operation will block until an in-progress operation finishes and its connection is checked back into the pool.

The default value is 100.

min_pool_size: Option<u32>

The minimum number of connections that should be available in a server's connection pool at a given time. If fewer than min_pool_size connections are in the pool, connections will be added to the pool in the background until min_pool_size is reached.

The default value is 0.

read_concern: Option<ReadConcern>

Specifies the default read concern for operations performed on the Client. See the ReadConcern type documentation for more details.

repl_set_name: Option<String>

The name of the replica set that the Client should connect to.

selection_criteria: Option<SelectionCriteria>

The default selection criteria for operations performed on the Client. See the SelectionCriteria type documentation for more details.

server_selection_timeout: Option<Duration>

The amount of time the Client should attempt to select a server for an operation before timing outs

The default value is 30 seconds.

tls: Option<Tls>

The TLS configuration for the Client to use in its connections with the server.

By default, TLS is disabled.

wait_queue_timeout: Option<Duration>

The amount of time a thread should block while waiting to check out a connection before returning an error. Note that if there are fewer than max_pool_size connections checked out or if a connection is available in the pool, checking out a connection will not block.

By default, threads will wait indefinitely for a connection to become available.

write_concern: Option<WriteConcern>

Specifies the default write concern for operations performed on the Client. See the WriteConcern type documentation for more details.

Methods

impl ClientOptions

pub fn builder(
) -> TypedBuilder_BuilderFor_ClientOptions<(), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), ()>

Create a builder for building ClientOptions. On the builder, call .hosts(...)(optional), .app_name(...)(optional), .compressors(...)(optional), .cmap_event_handler(...)(optional), .command_event_handler(...)(optional), .connect_timeout(...)(optional), .credential(...)(optional), .direct_connection(...)(optional), .heartbeat_freq(...)(optional), .local_threshold(...)(optional), .max_idle_time(...)(optional), .max_pool_size(...)(optional), .min_pool_size(...)(optional), .read_concern(...)(optional), .repl_set_name(...)(optional), .retry_reads(...)(optional), .retry_writes(...)(optional), .selection_criteria(...)(optional), .server_selection_timeout(...)(optional), .socket_timeout(...)(optional), .tls(...)(optional), .wait_queue_timeout(...)(optional), .write_concern(...)(optional), .zlib_compression(...)(optional), .original_uri(...)(optional) to set the values of the fields(they accept Into values). Finally, call .build() to create the instance of ClientOptions.

impl ClientOptions

pub fn parse(s: &str) -> Result<Self>

Parses a MongoDB connection string into a ClientOptions struct. If the string is malformed or one of the options has an invalid value, an error will be returned.

In the case that "mongodb+srv" is used, SRV and TXT record lookups will be done as part of this method.

The format of a MongoDB connection string is described here.

The following options are supported in the options query string:

• appName: maps to the app_name field
• authMechanism: maps to the mechanism field of the credential field
• authSource: maps to the source field of the credential field
• authMechanismProperties: maps to the mechanism_properties field of the credential field
• compressors: not yet implemented
• connectTimeoutMS: maps to the connect_timeout field
• direct: maps to the direct field
• heartbeatFrequencyMS: maps to the heartbeat_frequency field
• journal: maps to the journal field of the write_concern field
• localThresholdMS: maps to the local_threshold field
• maxIdleTimeMS: maps to the max_idle_time field
• maxStalenessSeconds: maps to the max_staleness field of the selection_criteria field
• maxPoolSize: maps to the max_pool_size field
• minPoolSize: maps to the min_pool_size field
• readConcernLevel: maps to the read_concern field
• readPreferenceField: maps to the ReadPreference enum variant of the selection_criteria field
• readPreferenceTags: maps to the tags field of the selection_criteria field. Note that this option can appear more than once; each instance will be mapped to a separate tag set
• replicaSet: maps to the repl_set_name field
• retryWrites: not yet implemented
• retryReads: not yet implemented
• serverSelectionTimeoutMS: maps to the server_selection_timeout field
• socketTimeoutMS: maps to the socket_timeout field
• ssl: an alias of the tls option
• tls: maps to the TLS variant of the tls field`.
• tlsInsecure: relaxes the TLS constraints on connections being made; currently is just an alias of tlsAllowInvalidCertificates, but more behavior may be added to this option in the future
• tlsAllowInvalidCertificates: maps to the allow_invalidCertificates field of the tls field
• tlsCAFile: maps to the ca_file_path field of the tls field
• tlsCertificateKeyFile: maps to the cert_key_file_path field of the tls field
• w: maps to the w field of the write_concern field
• waitQueueTimeoutMS: maps to the wait_queue_timeout field
• wTimeoutMS: maps to the w_timeout field of the write_concern field
• zlibCompressionLevel: not yet implemented

Trait Implementations

impl Clone for ClientOptions

fn clone(&self) -> ClientOptions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ClientOptions

fn fmt(&self, __f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Default for ClientOptions

fn default() -> Self

Returns the "default value" for a type.

impl PartialEq<ClientOptions> for ClientOptions

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.