SERVER-25027 Configurable connpool in mongos

Export server parameters for sharding connection pool

(cherry picked from commit b6c29702d8dcadb6c1ee90a876fac4117e0ca062)

1 files changed, 5 insertions, 3 deletions

diff --git a/src/mongo/executor/connection_pool.cpp b/src/mongo/executor/connection_pool.cpp
index 7b0e206469f..5f1b194dded 100644
--- a/src/mongo/executor/connection_pool.cpp
+++ b/src/mongo/executor/connection_pool.cpp
@@ -166,9 +166,11 @@ private:
     State _state;
 };
 
-Milliseconds const ConnectionPool::kDefaultRefreshTimeout = Seconds(20);
-Milliseconds const ConnectionPool::kDefaultRefreshRequirement = Seconds(60);
-Milliseconds const ConnectionPool::kDefaultHostTimeout = Minutes(5);
+constexpr Milliseconds ConnectionPool::kDefaultHostTimeout;
+size_t const ConnectionPool::kDefaultMaxConns = std::numeric_limits<size_t>::max();
+size_t const ConnectionPool::kDefaultMinConns = 1;
+constexpr Milliseconds ConnectionPool::kDefaultRefreshRequirement;
+constexpr Milliseconds ConnectionPool::kDefaultRefreshTimeout;
 
 const Status ConnectionPool::kConnectionStateUnknown =
     Status(ErrorCodes::InternalError, "Connection is in an unknown state");