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Add logging in API Gateway

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This commit is contained in:
Amit Garg 2020-08-09 14:18:41 +01:00 committed by Amit Garg
parent 1e90d0d645
commit d219a104c7
4 changed files with 57 additions and 2 deletions
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23
api-gateway/api-gateway-service/src/main/java/com/iluwatar/api/gateway/ImageClientImpl.java
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@ -23,11 +23,16 @@
package com.iluwatar.api.gateway;
import static org.slf4j.LoggerFactory.getLogger;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import org.slf4j.Logger;
import org.springframework.stereotype.Component;
/**
@ -35,6 +40,8 @@ import org.springframework.stereotype.Component;
*/
@Component
public class ImageClientImpl implements ImageClient {
private static final Logger LOGGER = getLogger(ImageClientImpl.class);
/**
* Makes a simple HTTP Get request to the Image microservice.
*
@ -49,12 +56,26 @@ public class ImageClientImpl implements ImageClient {
.build();
try {
LOGGER.info("Sending request to fetch image path");
var httpResponse = httpClient.send(httpGet, BodyHandlers.ofString());
logResponse(httpResponse);
return httpResponse.body();
} catch (IOException | InterruptedException e) {
e.printStackTrace();
LOGGER.error("Failure occurred while getting image path", e);
}
return null;
}
private void logResponse(HttpResponse<String> httpResponse) {
if (isSuccessResponse(httpResponse.statusCode())) {
LOGGER.info("Image path received successfully");
} else {
LOGGER.warn("Image path request failed");
}
}
private boolean isSuccessResponse(int responseCode) {
return responseCode >= 200 && responseCode <= 299;
}
}

24
api-gateway/api-gateway-service/src/main/java/com/iluwatar/api/gateway/PriceClientImpl.java
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@ -23,18 +23,26 @@
package com.iluwatar.api.gateway;
import static org.slf4j.LoggerFactory.getLogger;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import org.slf4j.Logger;
import org.springframework.stereotype.Component;
/**
* An adapter to communicate with the Price microservice.
*/
@Component
public class PriceClientImpl implements PriceClient {
private static final Logger LOGGER = getLogger(PriceClientImpl.class);
/**
* Makes a simple HTTP Get request to the Price microservice.
*
@ -49,12 +57,26 @@ public class PriceClientImpl implements PriceClient {
.build();
try {
LOGGER.info("Sending request to fetch price info");
var httpResponse = httpClient.send(httpGet, BodyHandlers.ofString());
logResponse(httpResponse);
return httpResponse.body();
} catch (IOException | InterruptedException e) {
e.printStackTrace();
LOGGER.error("Failure occurred while getting price info", e);
}
return null;
}
private void logResponse(HttpResponse<String> httpResponse) {
if (isSuccessResponse(httpResponse.statusCode())) {
LOGGER.info("Price info received successfully");
} else {
LOGGER.warn("Price info request failed");
}
}
private boolean isSuccessResponse(int responseCode) {
return responseCode >= 200 && responseCode <= 299;
}
}

6
api-gateway/image-microservice/src/main/java/com/iluwatar/image/microservice/ImageController.java
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@ -23,15 +23,20 @@
package com.iluwatar.image.microservice;
import static org.slf4j.LoggerFactory.getLogger;
import org.slf4j.Logger;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
/**
* Exposes the Image microservice's endpoints.
*/
@RestController
public class ImageController {
private static final Logger LOGGER = getLogger(ImageController.class);
/**
* An endpoint for a user to retrieve an image path.
@ -40,6 +45,7 @@ public class ImageController {
*/
@RequestMapping(value = "/image-path", method = RequestMethod.GET)
public String getImagePath() {
LOGGER.info("Successfully found image path");
return "/product-image.png";
}
}

6
api-gateway/price-microservice/src/main/java/com/iluwatar/price/microservice/PriceController.java
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@ -23,15 +23,20 @@
package com.iluwatar.price.microservice;
import static org.slf4j.LoggerFactory.getLogger;
import org.slf4j.Logger;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
/**
* Exposes the Price microservice's endpoints.
*/
@RestController
public class PriceController {
private static final Logger LOGGER = getLogger(PriceController.class);
/**
* An endpoint for a user to retrieve a product's price.
@ -40,6 +45,7 @@ public class PriceController {
*/
@RequestMapping(value = "/price", method = RequestMethod.GET)
public String getPrice() {
LOGGER.info("Successfully found price info");
return "20";
}
}