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HTTP Client: Introduce dataproxy_max_idle_connections config variable (#35864)

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* Introduce dataproxy_max_idle_connections config var

* Fix according to reviewer's comments

* Fix according to reviewer's comments - round 2

* Remove unused const

* Bring back MaxIdleConnsPerHost

* Fixes according to reviewer's comments
This commit is contained in:
Dimitris Sotirakis
2021-07-07 13:13:53 +03:00
committed by GitHub
parent d1da97b176
commit 069fb0cf38
5 changed files with 20 additions and 20 deletions
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3
conf/defaults.ini
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@ -166,9 +166,6 @@ max_conns_per_host = 0
# The maximum number of idle connections that Grafana will keep alive.
max_idle_connections = 100
# The maximum number of idle connections per host that Grafana will keep alive.
max_idle_connections_per_host = 2
# How many seconds the data proxy keeps an idle connection open before timing out.
idle_conn_timeout_seconds = 90

3
conf/sample.ini
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@ -172,9 +172,6 @@
# The maximum number of idle connections that Grafana will keep alive.
;max_idle_connections = 100
# The maximum number of idle connections per host that Grafana will keep alive.
;max_idle_connections_per_host = 2
# How many seconds the data proxy keeps an idle connection open before timing out.
;idle_conn_timeout_seconds = 90

1
docs/sources/administration/configuration.md
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@ -424,6 +424,7 @@ For more details check the [Transport.MaxConnsPerHost](https://golang.org/pkg/ne
The maximum number of idle connections that Grafana will maintain. Default is `100`. For more details check the [Transport.MaxIdleConns](https://golang.org/pkg/net/http/#Transport.MaxIdleConns) documentation.
### max_idle_connections_per_host
[Deprecated - use max_idle_connections instead]
The maximum number of idle connections per host that Grafana will maintain. Default is `2`. For more details check the [Transport.MaxIdleConnsPerHost](https://golang.org/pkg/net/http/#Transport.MaxIdleConnsPerHost) documentation.

25
pkg/models/datasource_cache.go
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@ -84,19 +84,20 @@ func (ds *DataSource) GetHTTPTransport(provider httpclient.Provider, customMiddl
func (ds *DataSource) HTTPClientOptions() sdkhttpclient.Options {
tlsOptions := ds.TLSOptions()
timeouts := &sdkhttpclient.TimeoutOptions{
Timeout: ds.getTimeout(),
DialTimeout: time.Duration(setting.DataProxyDialTimeout) * time.Second,
KeepAlive: time.Duration(setting.DataProxyKeepAlive) * time.Second,
TLSHandshakeTimeout: time.Duration(setting.DataProxyTLSHandshakeTimeout) * time.Second,
ExpectContinueTimeout: time.Duration(setting.DataProxyExpectContinueTimeout) * time.Second,
MaxConnsPerHost: setting.DataProxyMaxConnsPerHost,
MaxIdleConns: setting.DataProxyMaxIdleConns,
MaxIdleConnsPerHost: setting.DataProxyMaxIdleConns,
IdleConnTimeout: time.Duration(setting.DataProxyIdleConnTimeout) * time.Second,
}
opts := sdkhttpclient.Options{
Timeouts: &sdkhttpclient.TimeoutOptions{
Timeout: ds.getTimeout(),
DialTimeout: time.Duration(setting.DataProxyDialTimeout) * time.Second,
KeepAlive: time.Duration(setting.DataProxyKeepAlive) * time.Second,
TLSHandshakeTimeout: time.Duration(setting.DataProxyTLSHandshakeTimeout) * time.Second,
ExpectContinueTimeout: time.Duration(setting.DataProxyExpectContinueTimeout) * time.Second,
MaxConnsPerHost: setting.DataProxyMaxConnsPerHost,
MaxIdleConns: setting.DataProxyMaxIdleConns,
MaxIdleConnsPerHost: setting.DataProxyMaxIdleConnsPerHost,
IdleConnTimeout: time.Duration(setting.DataProxyIdleConnTimeout) * time.Second,
},
Headers: getCustomHeaders(ds.JsonData, ds.DecryptedValues()),
Timeouts: timeouts,
Headers: getCustomHeaders(ds.JsonData, ds.DecryptedValues()),
Labels: map[string]string{
"datasource_name": ds.Name,
"datasource_uid": ds.Uid,

8
pkg/setting/setting.go
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@ -850,11 +850,15 @@ func (cfg *Cfg) Load(args *CommandLineArgs) error {
DataProxyTLSHandshakeTimeout = dataproxy.Key("tls_handshake_timeout_seconds").MustInt(10)
DataProxyExpectContinueTimeout = dataproxy.Key("expect_continue_timeout_seconds").MustInt(1)
DataProxyMaxConnsPerHost = dataproxy.Key("max_conns_per_host").MustInt(0)
DataProxyMaxIdleConns = dataproxy.Key("max_idle_connections").MustInt(100)
DataProxyMaxIdleConnsPerHost = dataproxy.Key("max_idle_connections_per_host").MustInt(2)
DataProxyMaxIdleConns = dataproxy.Key("max_idle_connections").MustInt()
DataProxyIdleConnTimeout = dataproxy.Key("idle_conn_timeout_seconds").MustInt(90)
cfg.SendUserHeader = dataproxy.Key("send_user_header").MustBool(false)
if val, err := dataproxy.Key("max_idle_connections_per_host").Int(); err == nil {
cfg.Logger.Warn("[Deprecated] the configuration setting 'max_idle_connections_per_host' is deprecated, please use 'max_idle_connections' instead")
DataProxyMaxIdleConns = val
}
if err := readSecuritySettings(iniFile, cfg); err != nil {
return err
}