rss example added

.gitignore

@@ -4,6 +4,7 @@
 **/krakend_gorilla*
 **/krakend_negroni*
 **/krakend_httpcache*
+**/krakend_rss*
 server.rsa.crt
 server.rsa.key
 *.json

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all deps test build benchmark coveralls build_gin_example build_dns_example build_mux_example build_gorilla_example build_negroni_example build_httpcache_example
+.PHONY: all deps test build benchmark coveralls build_gin_example build_dns_example build_mux_example build_gorilla_example build_negroni_example build_httpcache_example build_rss_example
 
 PACKAGES = $(shell go list ./... | grep -v /examples/)
 
@@ -11,6 +11,7 @@ deps:
 	go get -u github.com/gorilla/mux
 	go get -u github.com/urfave/negroni
 	go get -u github.com/clbanning/mxj/x2j
+	go get -u github.com/mmcdole/gofeed
 
 test:
 	go fmt ./...
@@ -20,7 +21,7 @@ test:
 benchmark:
 	go test -bench=. -benchtime=3s $(PACKAGES)
 
-build: build_gin_example build_dns_example build_mux_example build_gorilla_example build_negroni_example build_httpcache_example
+build: build_gin_example build_dns_example build_mux_example build_gorilla_example build_negroni_example build_httpcache_example build_rss_example
 
 build_gin_example:
 	cd examples/gin/ && make && cd ../.. && cp examples/gin/krakend_gin_example* .
@@ -40,6 +41,9 @@ build_negroni_example:
 build_httpcache_example:
 	cd examples/httpcache/ && make && cd ../.. && cp examples/httpcache/krakend_httpcache_example* .
 
+build_rss_example:
+	cd examples/rss/ && make && cd ../.. && cp examples/rss/krakend_rss_example* .
+
 coveralls: all
 	go get github.com/mattn/goveralls
 	sh coverage.sh --coveralls

examples/rss/Makefile

@@ -0,0 +1,20 @@
+.PHONY: all deps build
+
+# This Makefile is a simple example that demonstrates usual steps to build a binary that can be run in the same
+# architecture that was compiled in. The "ldflags" in the build assure that any needed dependency is included in the
+# binary and no external dependencies are needed to run the service.
+
+KRAKEND_VERSION=$(shell git describe --always --long --dirty --tags)
+BIN_NAME=krakend_rss_example_${KRAKEND_VERSION}
+
+all: deps build
+
+deps:
+	go get "github.com/devopsfaith/krakend/config/viper"
+	go get "github.com/devopsfaith/krakend/proxy"
+	go get "github.com/devopsfaith/krakend/router/gin"
+	go get "github.com/devopsfaith/krakend/logging/gologging"
+
+build:
+	go build -ldflags="-X github.com/devopsfaith/krakend/core.KrakendVersion=${KRAKEND_VERSION}" -o ${BIN_NAME}
+	@echo "You can now use ./${BIN_NAME}"

examples/rss/README.md

@@ -0,0 +1,59 @@
+Krakend RSS example
+====
+
+## Build
+
+Go 1.8 is a requirement
+
+	$ make
+
+## Run
+
+Running it as a common executable, logs are send to the stdOut and some options are available at the CLI
+
+	$ ./krakend_rss_example
+	Usage of ./krakend_rss_example:
+	  -c string
+	    	Path to the configuration filename (default "/etc/krakend/configuration.json")
+	  -d	Enable the debug
+	  -p int
+	    	Port of the service
+
+This is an example of a suitable json configuration
+
+	{
+	    "version": 1,
+	    "name": "TV shows gateway",
+	    "port": 8080,
+	    "cache_ttl": 3600,
+	    "timeout": "3s",
+	    "endpoints": [
+	        {
+	            "endpoint": "/showrss/{id}",
+	            "backend": [
+	                {
+	                    "host": [
+	                        "http://showrss.info/"
+	                    ],
+	                    "url_pattern": "/user/schedule/{id}.rss",
+	                    "encoding": "rss",
+	                    "group": "schedule",
+	                    "whitelist": ["items", "title"]
+	                },
+	                {
+	                    "host": [
+	                        "http://showrss.info/"
+	                    ],
+	                    "url_pattern": "/user/{id}.rss",
+	                    "encoding": "rss",
+	                    "group": "available",
+	                    "whitelist": ["items", "title"]
+	                }
+	            ]
+	        }
+	    ]
+	}
+
+You can see the resulting output with this simple curl command (replace `<YOUR_SHOWRSS_USER_ID>` with your own id)
+
+	$ curl -i http://127.0.0.1:8080/showrss/<YOUR_SHOWRSS_USER_ID>

examples/rss/main.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/devopsfaith/krakend/config"
+	"github.com/devopsfaith/krakend/config/viper"
+	"github.com/devopsfaith/krakend/logging"
+	"github.com/devopsfaith/krakend/logging/gologging"
+	"github.com/devopsfaith/krakend/proxy"
+	"github.com/devopsfaith/krakend/router/gin"
+)
+
+func main() {
+	port := flag.Int("p", 0, "Port of the service")
+	logLevel := flag.String("l", "ERROR", "Logging level")
+	debug := flag.Bool("d", false, "Enable the debug")
+	configFile := flag.String("c", "/etc/krakend/configuration.json", "Path to the configuration filename")
+	flag.Parse()
+
+	parser := viper.New()
+	serviceConfig, err := parser.Parse(*configFile)
+	if err != nil {
+		log.Fatal("ERROR:", err.Error())
+	}
+	serviceConfig.Debug = serviceConfig.Debug || *debug
+	if *port != 0 {
+		serviceConfig.Port = *port
+	}
+
+	logger, err := gologging.NewLogger(*logLevel, os.Stdout, "[KRAKEND]")
+	if err != nil {
+		log.Fatal("ERROR:", err.Error())
+	}
+
+	gin.DefaultFactory(proxy.DefaultFactory(logger), logger).
+		New().
+		Run(serviceConfig)
+}
+
+// customProxyFactory adds a logging middleware wrapping the internal factory
+type customProxyFactory struct {
+	logger  logging.Logger
+	factory proxy.Factory
+}
+
+// New implements the Factory interface
+func (cf customProxyFactory) New(cfg *config.EndpointConfig) (p proxy.Proxy, err error) {
+	p, err = cf.factory.New(cfg)
+	if err == nil {
+		p = proxy.NewLoggingMiddleware(cf.logger, cfg.Endpoint)(p)
+	}
+	return
+}