camel snippet using oauth to get an auth token and use it to request a secured rest service

camel-raw-oauth.java

		from("timer://scheduler?period=30s")
			.log("get access token")
			.to("direct:authService");

		from("direct:authService").tracing()
			.setHeader(Exchange.HTTP_PATH)
				.simple("<auth service context>/oauth2/token")
			.setHeader("CamelHttpMethod")
				.simple("POST")
			.setHeader("Content-Type")
				.simple("application/x-www-form-urlencoded")
			.setHeader("Accept")
				.simple("application/json")
			.setBody()
				.constant("grant_type=client_credentials&client_id=<client id>&client_secret=<client sec>")
			.to("https4://<remote auth service url>")
				.convertBodyTo(String.class)
			.log("response from API: " + body())
			.choice()
				.when().simple("${header.CamelHttpResponseCode} == 200")
					.unmarshal().json(JsonLibrary.Jackson, AccessResponseToken.class)
					.setHeader("jwt").simple("${body.access_token}")
					.to("direct:<some direct route>")
				.otherwise()
					.log("Not Authenticated!!!");

		from("direct:<some direct route>").tracing()
			.log("body: " + body().toString())
			.setBody().constant(null)
			.setHeader(Exchange.HTTP_PATH)
				.simple("v1/canais")
			.setHeader("CamelHttpMethod")
				.simple("GET")
			.setHeader("Accept")
				.simple("application/json")
			.setHeader("Authorization")
				.simple("${header.jwt}")     // <<<<<< HERE YOU GET YOUR AUTH TOKEN GRANTED IN PREVIOUS ROUTE >>>>>>
			.to("https4://<remote secured service url>")
				.convertBodyTo(String.class)
			.choice()
				.when().simple("${header.CamelHttpResponseCode} == 200")
				.setBody().javaScript(""
						+ " canais = JSON.parse(request.body);"
						+ " idx = Math.floor(Math.random() * (canais.length - 1));"
						+ " result = canais[idx].id;"
						+ "")
				.log("response from globosat API: " + body())
				.to("direct:<another route>")
			.otherwise()
				.log("Error!!!");