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Add possibility to set max db connections

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Since it's an important part of a connection pool configuration, allow
to configure max db connections, that pool will open to a target db.
From this numbers several others (like default pool size, min pool size,
reserve) will be deduced, taking into account desired number of instances.
This commit is contained in:
Dmitrii Dolgov
2020-03-03 15:58:33 +01:00
parent 037d7120ef
commit 918df1461b
9 changed files with 122 additions and 24 deletions
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pkg/controller/operator_config.go
+14 -7
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@@ -22,6 +22,10 @@ func (c *Controller) readOperatorConfigurationFromCRD(configObjectNamespace, con
return config, nil
}
func int32ToPointer(value int32) *int32 {
return &value
}
// importConfigurationFromCRD is a transitional function that converts CRD configuration to the one based on the configmap
func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigurationData) *config.Config {
result := &config.Config{}
@@ -146,14 +150,13 @@ func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigur
// Connection pool. Looks like we can't use defaulting in CRD before 1.17,
// so ensure default values here.
result.ConnectionPool.NumberOfInstances = fromCRD.ConnectionPool.NumberOfInstances
if result.ConnectionPool.NumberOfInstances == nil ||
*result.ConnectionPool.NumberOfInstances < 1 {
var value int32
result.ConnectionPool.NumberOfInstances = util.CoalesceInt32(
fromCRD.ConnectionPool.NumberOfInstances,
int32ToPointer(1))
value = 1
result.ConnectionPool.NumberOfInstances = &value
}
result.ConnectionPool.NumberOfInstances = util.MaxInt32(
result.ConnectionPool.NumberOfInstances,
int32ToPointer(1))
result.ConnectionPool.Schema = util.Coalesce(
fromCRD.ConnectionPool.Schema,
@@ -187,5 +190,9 @@ func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigur
fromCRD.ConnectionPool.DefaultMemoryLimit,
constants.ConnectionPoolDefaultMemoryLimit)
result.ConnectionPool.MaxDBConnections = util.CoalesceInt32(
fromCRD.ConnectionPool.MaxDBConnections,
int32ToPointer(constants.ConnPoolMaxDBConnections))
return result
}