V0.1i dev buildout wendelin

See merge request !1

Makefile

+
+ifeq ($(PREFIX),)
+	PREFIX=/opt/fluentbit-plugin-wendelin
+endif
+
+.PHONY: all
+all: build
+
+build:
+	go build -v -buildmode=c-shared -o build/libfluentbit_wendelin.so src/fluentbit_wendelin.go
+
+.PHONY: install
+install: all
+	install -d $(DESTDIR)$(PREFIX)/etc/
+	install -d $(DESTDIR)$(PREFIX)/include/
+	install -d $(DESTDIR)$(PREFIX)/lib/
+	cp src/configuration-files/flb.conf.in	$(DESTDIR)$(PREFIX)/etc/
+	cp build/libfluentbit_wendelin.h	$(DESTDIR)$(PREFIX)/include/
+	cp build/libfluentbit_wendelin.so	$(DESTDIR)$(PREFIX)/lib/
+
+.PHONY: uninstall
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/etc/flb.conf.in
+	rm -f $(DESTDIR)$(PREFIX)/include/libfluentbit_wendelin.h
+	rm -f $(DESTDIR)$(PREFIX)/lib/libfluentbit_wendelin.so
+
+.PHONY: clean
+clean:
+	rm -rf build/
+
+
+# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)
+.PHONY: test
+test:
+	gcc -L. -lfluentbit_wendelin test/test.c

README.md

-fluentbit-plugin-wendelin
-======================
+output plugin for fluentbit
 
+more :
 
-This is output plugin for [Fluentbit][] to forward data to [Wendelin][] system.
-
-[Fluentbit]:  http://fluentbit.io/
-[Wendelin]: http://wendelin.io/
-
-See *example/to_wendelin.conf* for fully setup example.
\ No newline at end of file
+https://docs.fluentbit.io/manual/development/golang-output-plugins
+https://github.com/fluent/fluent-bit-go

go.mod

+module fluentbit-plugin-wendelin
+
+go 1.16
+
+require github.com/fluent/fluent-bit-go v0.0.0-20201210173045-3fd1e0486df2 // indirect

go.sum

+github.com/fluent/fluent-bit-go v0.0.0-20201210173045-3fd1e0486df2 h1:G57WNyWS0FQf43hjRXLy5JT1V5LWVsSiEpkUcT67Ugk=
+github.com/fluent/fluent-bit-go v0.0.0-20201210173045-3fd1e0486df2/go.mod h1:L92h+dgwElEyUuShEwjbiHjseW410WIcNz+Bjutc8YQ=
+github.com/ugorji/go v1.1.7 h1:/68gy2h+1mWMrwZFeD1kQialdSzAb432dtpeJ42ovdo=
+github.com/ugorji/go v1.1.7/go.mod h1:kZn38zHttfInRq0xu/PH0az30d+z6vm202qpg1oXVMw=
+github.com/ugorji/go/codec v1.1.7 h1:2SvQaVZ1ouYrrKKwoSk2pzd4A9evlKJb9oTL+OaLUSs=
+github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=

src/configuration-files/flb.conf.in

+[SERVICE]
+  flush 5
+
+[INPUT]
+  name tail
+  path /var/log/metadata_collect.log
+  refresh_interval 2
+
+[output]
+  name fluentbit_wendelin
+  match *
+  streamtool_uri %WENDELIN_URL%
+  user zope
+  password %WENDELIN_PWD%
+  buffer_type memory
+  flush_interval 60s
+  disable_retry_limit true
+  reference %WENDELIN_REFERENCE%

src/fluentbit_wendelin.go

+package main
+
+import "github.com/fluent/fluent-bit-go/output"
+import (
+	"C"
+	"bytes"
+	"fmt"
+	"net/http"
+	"regexp"
+	"strconv"
+	"unsafe"
+)
+
+// configuration parameters
+var user string
+var password string
+var uri string
+var reference string
+
+//export FLBPluginRegister
+func FLBPluginRegister(ctx unsafe.Pointer) int {
+	return output.FLBPluginRegister(ctx, "wendelin_out", "Wendelin Out GO!")
+}
+
+//export FLBPluginInit
+// (fluentbit will call this)
+// ctx (context) pointer to fluentbit context (state/ c code)
+func FLBPluginInit(ctx unsafe.Pointer) int {
+	// Example to retrieve an optional configuration parameter
+	//	param := output.FLBPluginConfigKey(ctx, "param")
+	user = output.FLBPluginConfigKey(ctx, "User")
+	password = output.FLBPluginConfigKey(ctx, "Password")
+	uri = output.FLBPluginConfigKey(ctx, "Uri")
+	reference = output.FLBPluginConfigKey(ctx, "Reference")
+
+	//fmt.Printf("[flb-go] plugin parameter = '%s'\n", param)
+	fmt.Printf("[flb-go user] plugin parameter = '%s'\n", user)
+	fmt.Printf("[flb-go password] plugin parameter = '%s'\n", password)
+	fmt.Printf("[flb-go uri] plugin parameter = '%s'\n", uri)
+	fmt.Printf("[flb-go reference] plugin parameter = '%s'\n", reference)
+
+	return output.FLB_OK
+}
+
+//export FLBPluginFlush
+func FLBPluginFlush(data unsafe.Pointer, length C.int, tag *C.char) int {
+
+	request_string := uri + "/ingest?reference=" + reference
+	var b []byte
+	b = C.GoBytes(data, C.int(length))
+
+	hc := http.Client{}
+
+	req, err := http.NewRequest("POST", request_string, bytes.NewBuffer(b))
+
+	if err != nil {
+		return output.FLB_ERROR
+	}
+
+	req.Header.Set("Content-Type", "application/octet-stream")
+	req.SetBasicAuth(user, password)
+
+	resp, err := hc.Do(req)
+
+	if err != nil {
+		return output.FLB_ERROR
+	}
+
+	/*
+	 * Only allow the following HTTP status:
+	 *
+	 *  - 200: OK
+	 *  - 201: Created
+	 *  - 202: Accepted
+	 *  - 203: no authorative resp
+	 *  - 204: No Content
+	 *  - 205: Reset content
+	 */
+	re := regexp.MustCompile("[0-9]+") // get only the status code
+	status_code := re.FindAllString(resp.Status, -1)
+	resp_status, err := strconv.Atoi(status_code[0])
+	if err != nil {
+		fmt.Println(err)
+		return output.FLB_RETRY
+	}
+
+	fmt.Println(resp.Status)
+	fmt.Println(err)
+
+	if resp_status < 200 && resp_status > 205 {
+		return output.FLB_RETRY
+	}
+
+	defer resp.Body.Close()
+
+	/*
+	 * Return options:
+	 *
+	 * - output.FLB_OK    = data have been processed.
+	 * - output.FLB_ERROR = unrecoverable error, do not try this again.
+	 * - output.FLB_RETRY = retry to flush later.
+	 */
+	return output.FLB_OK
+}
+
+//export FLBPluginExit
+func FLBPluginExit() int {
+	return output.FLB_OK
+}
+
+func main() {
+}
+

test/test.c

+#include <stdio.h>
+#include "../libfluentbit_wendelin.h"
+
+void main() {
+  printf("test");
+
+}