InfluxDB Line Protocol support (#26)

* inital support for summary as influx line format

* add inlfux-line output option

* add influx-details option

* remove pretty.json

* influx fixes and docs

* fix usage and docs

* relative links

* fix spelling

* readme

* readme

* readme

README.md

@@ -15,10 +15,21 @@
 
 Simple [gRPC](http://grpc.io/) benchmarking and load testing tool inspired by [hey](https://github.com/rakyll/hey/) and [grpcurl](https://github.com/fullstorydev/grpcurl).
 
+## Documentation
+
+- [Intall](#install)
+- [Usage](#usage)
+- [Call Template Data](#call_template_data)
+- [Examples](#examples)
+- [Output](#output)
+- [Extras](#extras)
+
+<a name="install"></a>
 ## Install
 
 Download a prebuilt executable binary from the [releases page](https://github.com/bojand/ghz/releases).
 
+<a name="usage"></a>
 ## Usage
 
 ```
@@ -56,6 +67,8 @@ Options:
       "json" outputs the metrics report in JSON format.
       "pretty" outputs the metrics report in pretty JSON format.
       "html" outputs the metrics report as HTML.
+      "influx-summary" outputs the metrics summary as influxdb line protocol.
+      "influx-details" outputs the metrics details as influxdb line protocol.
 
   -i  Comma separated list of proto import paths. The current working directory and the directory
 	  of the protocol buffer file are automatically added to the import list.
@@ -70,6 +83,7 @@ Options:
 
 Alternatively all settings can be set via `ghz.json` file if present in the same path as the `ghz` executable. A custom configuration file can be specified using `-config` option.
 
+<a name="call_template_data"></a>
 ## Call Template Data
 
 Data and metadata can specify [template actions](https://golang.org/pkg/text/template/) that will be parsed and evaluated at every request. Each request gets a new instance of the data. The available variables / actions are:
@@ -92,6 +106,7 @@ type callTemplateData struct {
 
 This can be useful to inject variable information into the data or metadata payload for each request, such as timestamp or unique request number. See examples below.
 
+<a name="examples"></a>
 ## Examples
 
 A simple unary call:
@@ -166,8 +181,12 @@ Example `ghz.json`
 }
 ```
 
+<a name="output"></a>
 ## Output
 
+<a name="output-summary"></a>
+### Summary
+
 Sample standard output of summary of the results:
 
 ```
@@ -204,6 +223,9 @@ Status code distribution:
   [OK]	2000 responses
 ```
 
+<a name="output-csv"></a>
+### CSV
+
 Alternatively with `-O csv` flag we can get detailed listing in csv format:
 
 ```sh
@@ -221,10 +243,54 @@ duration (ms),status,error
 ...
 ```
 
+<a name="output-html"></a>
+### HTML
+
 HTML output can be generated using `html` as format in the `-O` option. See [sample output](http://bojand.github.io/sample.html).
 
+<a name="output-json"></a>
+### JSON
+
 Using `-O json` outputs JSON data, and `-O pretty` outputs JSON in pretty format.
 
+<a name="output-influx"></a>
+### InfluxDB Line Protocol
+
+Using `-O influx-summary` outputs the summary data as [InfluxDB Line Protocol](https://docs.influxdata.com/influxdb/v1.6/concepts/glossary/#line-protocol). Sample output:
+
+```
+ghz_run,proto="/testdata/greeter.proto",call="helloworld.Greeter.SayHello",host="0.0.0.0:50051",n=1000,c=50,qps=0,z=0,timeout=20,dial_timeout=10,keepalive=0,data="{\"name\":\"{{.InputName}}\"}",metadata="{\"rn\":\"{{.RequestNumber}}\"}",errors=74,has_errors=true count=1000,total=50000556,average=1771308,fastest=248603,slowest=7241944,rps=19999.78,median=1715940,p95=4354194,errors=74 128802790
+```
+
+Use `-O influx-summary` to get the individual details for each request:
+
+```
+ghz_detail,proto="/testdata/greeter.proto",call="helloworld.Greeter.SayHello",host="0.0.0.0:50051",n=1000,c=50,qps=0,z=0,timeout=20,dial_timeout=10,keepalive=0,data="{\"name\":\"{{.InputName}}\"}",metadata="{\"rn\":\"{{.RequestNumber}}\"}",hasError=false latency=5157328,error=,status=OK 681023506
+ghz_detail,proto="/testdata/greeter.proto",call="helloworld.Greeter.SayHello",host="0.0.0.0:50051",n=1000,c=50,qps=0,z=0,timeout=20,dial_timeout=10,keepalive=0,data="{\"name\":\"{{.InputName}}\"}",metadata="{\"rn\":\"{{.RequestNumber}}\"}",hasError=false latency=4990499,error=,status=OK 681029613
+```
+
+## Extras
+
+For conveniance we include prebuilt [Grafana](http://grafana.com/) dashboards for [summary](extras/influx-summary-grafana-dashboard.json) and [details](extras/influx-details-grafana-dashboard.json).
+
+Summary Grafana Dashboard:
+
+<div align="center">
+	<br>
+	<img src="extras/influx-summary-grafana-dashboard.png" alt="Summary Grafana Dashboard">
+	<br>
+</div>
+
+
+Details Grafana Dashboard:
+
+<div align="center">
+	<br>
+	<img src="extras/influx-details-grafana-dashboard.png" alt="Details Grafana Dashboard">
+	<br>
+</div>
+
+
 ## Credit
 
 Icon made by <a href="http://www.freepik.com" title="Freepik">Freepik</a> from <a href="https://www.flaticon.com/" title="Flaticon">www.flaticon.com</a> is licensed by <a href="http://creativecommons.org/licenses/by/3.0/" title="Creative Commons BY 3.0" target="_blank">CC 3.0 BY</a>

cmd/ghz/main.go

@@ -89,6 +89,8 @@ Options:
       "json" outputs the metrics report in JSON format.
       "pretty" outputs the metrics report in pretty JSON format.
       "html" outputs the metrics report as HTML.
+      "influx-summary" outputs the metrics summary as influxdb line protocol.
+      "influx-details" outputs the metrics details as influxdb line protocol.
 
   -i  Comma separated list of proto import paths. The current working directory and the directory
 	  of the protocol buffer file are automatically added to the import list.
@@ -195,7 +197,14 @@ func runTest(config *config.Config) (*ghz.Report, error) {
 		return nil, err
 	}
 
+	input := config.Proto
+	if config.Protoset != "" {
+		input = config.Protoset
+	}
+
 	opts := &ghz.Options{
+		Proto:         input,
+		Call:          config.Call,
 		Host:          config.Host,
 		Cert:          config.Cert,
 		CName:         config.CName,