1MONGOC_TOPOLOGY_DESCRIPTION_HMAOSN_GROECA_DlTAiOBbPLmOEoL_nOSgGEoYRc_VDEERS(C3R)IPTION_HAS_READABLE_SERVER(3)
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NAME

6       mongoc_topology_description_has_readable_server  -  mongoc_topology_de‐
7       scription_has_readable_server()
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SYNOPSIS

10          bool
11          mongoc_topology_description_has_readable_server (
12             mongoc_topology_description_t *td, const mongoc_read_prefs_t *prefs);
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14       Determines if the topology has a readable  server  available.   Servers
15       are  filtered  by the given read preferences only if the driver is con‐
16       nected to a replica set, otherwise the read  preferences  are  ignored.
17       This  function  uses the driver's current knowledge of the state of the
18       MongoDB server or servers it is connected to; it does  no  I/O  and  it
19       does not block.
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21       Use  this  function in a topology-changed callback registered with mon‐
22       goc_apm_set_topology_changed_cb.  For  historical  reasons,  the   mon‐
23       goc_topology_description_t  passed  to the callback is a const pointer,
24       you must cast away const to pass  the  pointer  to  mongoc_topology_de‐
25       scription_has_readable_server.
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PARAMETERS

28       • td: A mongoc_topology_description_t.
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30       • read_prefs:  A  mongoc_read_prefs_t  or NULL for default read prefer‐
31         ences.
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RETURNS

34       True if there is a known server matching prefs.
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36       SEE ALSO:
37          Introduction to Application Performance Monitoring
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AUTHOR

41       MongoDB, Inc
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44       2017-present, MongoDB, Inc
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491.20.0                      MONGONCo_vTO1P8O,LO2G0Y2_1DESCRIPTION_HAS_READABLE_SERVER(3)
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