[exporter/signalfx] enabled http2 healthcheck

Signed-off-by: Dani Louca <[email protected]>

Author: dloucasfx

.chloggen/sfx-exporter-http2.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: signalfxexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Enable HTTP/2 health check by default
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [29716]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []

exporter/signalfxexporter/README.md

@@ -86,6 +86,10 @@ The following configuration options can also be configured:
   defined in `translation/constants.go`.
 - `timeout` (default = 10s): Amount of time to wait for a send operation to
   complete.
+- `http2_read_idle_timeout` (default = 10s): Send a ping frame for a health check if the connection has been idle for the configured value.
+  0s means http/2 health check will be disabled.
+- `http2_ping_timeout` (default = 10s): Triggered by `http2_read_idle_timeout`; When there's no response to the ping within the configured value, 
+  the connection will be closed. If this value is set to 0, it will default to 15s. 
 - `headers` (no default): Headers to pass in the payload.
 - `max_idle_conns` (default = 100): The maximum idle HTTP connections the client can keep open.
 - `max_idle_conns_per_host` (default = 100): The maximum idle HTTP connections the client can keep open per host.

exporter/signalfxexporter/config_test.go

@@ -48,11 +48,13 @@ func TestLoadConfig(t *testing.T) {
 				AccessToken: "testToken",
 				Realm:       "ap0",
 				HTTPClientSettings: confighttp.HTTPClientSettings{
-					Timeout:             10 * time.Second,
-					Headers:             nil,
-					MaxIdleConns:        &hundred,
-					MaxIdleConnsPerHost: &hundred,
-					IdleConnTimeout:     &idleConnTimeout,
+					Timeout:              10 * time.Second,
+					Headers:              nil,
+					MaxIdleConns:         &hundred,
+					MaxIdleConnsPerHost:  &hundred,
+					IdleConnTimeout:      &idleConnTimeout,
+					HTTP2ReadIdleTimeout: 10 * time.Second,
+					HTTP2PingTimeout:     10 * time.Second,
 				},
 				RetrySettings: exporterhelper.RetrySettings{
 					Enabled:             true,
@@ -114,9 +116,11 @@ func TestLoadConfig(t *testing.T) {
 						"added-entry": "added value",
 						"dot.test":    "test",
 					},
-					MaxIdleConns:        &seventy,
-					MaxIdleConnsPerHost: &seventy,
-					IdleConnTimeout:     &idleConnTimeout,
+					MaxIdleConns:         &seventy,
+					MaxIdleConnsPerHost:  &seventy,
+					IdleConnTimeout:      &idleConnTimeout,
+					HTTP2ReadIdleTimeout: 10 * time.Second,
+					HTTP2PingTimeout:     10 * time.Second,
 				},
 				RetrySettings: exporterhelper.RetrySettings{
 					Enabled:             true,

exporter/signalfxexporter/factory.go

@@ -22,8 +22,10 @@ import (
 )
 
 const (
-	defaultHTTPTimeout = time.Second * 10
-	defaultMaxConns    = 100
+	defaultHTTPTimeout          = time.Second * 10
+	defaultHTTP2ReadIdleTimeout = time.Second * 10
+	defaultHTTP2PingTimeout     = time.Second * 10
+	defaultMaxConns             = 100
 
 	defaultDimMaxBuffered         = 10000
 	defaultDimSendDelay           = 10 * time.Second
@@ -52,10 +54,12 @@ func createDefaultConfig() component.Config {
 		RetrySettings: exporterhelper.NewDefaultRetrySettings(),
 		QueueSettings: exporterhelper.NewDefaultQueueSettings(),
 		HTTPClientSettings: confighttp.HTTPClientSettings{
-			Timeout:             defaultHTTPTimeout,
-			MaxIdleConns:        &maxConnCount,
-			MaxIdleConnsPerHost: &maxConnCount,
-			IdleConnTimeout:     &idleConnTimeout,
+			Timeout:              defaultHTTPTimeout,
+			MaxIdleConns:         &maxConnCount,
+			MaxIdleConnsPerHost:  &maxConnCount,
+			IdleConnTimeout:      &idleConnTimeout,
+			HTTP2ReadIdleTimeout: defaultHTTP2ReadIdleTimeout,
+			HTTP2PingTimeout:     defaultHTTP2PingTimeout,
 		},
 		AccessTokenPassthroughConfig: splunk.AccessTokenPassthroughConfig{
 			AccessTokenPassthrough: true,