Add ClickHouse output plugin

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

cmd/main.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"time"
+
+	_ "github.com/karaolidis/telegraf-clickhouse-plugin/plugins/outputs/clickhouse"
+
+	"github.com/influxdata/telegraf/plugins/common/shim"
+)
+
+var pollInterval = flag.Duration("poll_interval", 1*time.Second, "how often to send metrics")
+
+var pollIntervalDisabled = flag.Bool(
+	"poll_interval_disabled",
+	false,
+	"set to true to disable polling. You want to use this when you are sending metrics on your own schedule",
+)
+var configFile = flag.String("config", "sample.conf", "path to the config file for this plugin")
+var err error
+
+// This is designed to be simple; Just change the import above, and you're good.
+//
+// However, if you want to do all your config in code, you can like so:
+//
+// // initialize your plugin with any settings you want
+//
+//	myInput := &mypluginname.MyPlugin{
+//		DefaultSettingHere: 3,
+//	}
+//
+// shim := shim.New()
+//
+// shim.AddInput(myInput)
+//
+// // now the shim.Run() call as below. Note the shim is only intended to run a single plugin.
+func main() {
+	// parse command line options
+	flag.Parse()
+	if *pollIntervalDisabled {
+		*pollInterval = shim.PollIntervalDisabled
+	}
+
+	// create the shim. This is what will run your plugins.
+	shimLayer := shim.New()
+
+	// If no config is specified, all imported plugins are loaded.
+	// otherwise, follow what the config asks for.
+	// Check for settings from a config toml file,
+	// (or just use whatever plugins were imported above)
+	if err = shimLayer.LoadConfig(configFile); err != nil {
+		fmt.Fprintf(os.Stderr, "Err loading input: %s\n", err)
+		os.Exit(1)
+	}
+
+	// run a single plugin until stdin closes, or we receive a termination signal
+	if err = shimLayer.Run(*pollInterval); err != nil {
+		fmt.Fprintf(os.Stderr, "Err: %s\n", err)
+		os.Exit(1)
+	}
+}