Add logger

deno.lock

@@ -11,6 +11,16 @@
     "https://deno.land/std@0.160.0/async/pool.ts": "ef9eb97b388543acbf0ac32647121e4dbe629236899586c4d4311a8770fbb239",
     "https://deno.land/std@0.160.0/async/tee.ts": "9af3a3e7612af75861308b52249e167f5ebc3dcfc8a1a4d45462d96606ee2b70",
     "https://deno.land/std@0.160.0/http/server.ts": "e99c1bee8a3f6571ee4cdeb2966efad465b8f6fe62bec1bdb59c1f007cc4d155",
+    "https://deno.land/std@0.198.0/assert/assert.ts": "9a97dad6d98c238938e7540736b826440ad8c1c1e54430ca4c4e623e585607ee",
+    "https://deno.land/std@0.198.0/assert/assertion_error.ts": "4d0bde9b374dfbcbe8ac23f54f567b77024fb67dbb1906a852d67fe050d42f56",
+    "https://deno.land/std@0.198.0/bytes/copy.ts": "939d89e302a9761dcf1d9c937c7711174ed74c59eef40a1e4569a05c9de88219",
+    "https://deno.land/std@0.198.0/fmt/colors.ts": "a7eecffdf3d1d54db890723b303847b6e0a1ab4b528ba6958b8f2e754cf1b3bc",
+    "https://deno.land/std@0.198.0/fs/exists.ts": "29c26bca8584a22876be7cb8844f1b6c8fc35e9af514576b78f5c6884d7ed02d",
+    "https://deno.land/std@0.198.0/io/buf_writer.ts": "48c33c8f00b61dcbc7958706741cec8e59810bd307bc6a326cbd474fe8346dfd",
+    "https://deno.land/std@0.198.0/log/handlers.ts": "38871ecbfa67b0d39dc3384210439ac9a13cba6118b912236f9011b5989b9a4d",
+    "https://deno.land/std@0.198.0/log/levels.ts": "6309147664e9e008cd6671610f2505c4c95f181f6bae4816a84b33e0aec66859",
+    "https://deno.land/std@0.198.0/log/logger.ts": "257ceb47e3f5f872068073de9809b015a7400e8d86dd40563c1d80169e578f71",
+    "https://deno.land/std@0.198.0/log/mod.ts": "cc1989f3290b792271f41f4cba392a367520564efbc892be1e00dee423ccd3d9",
     "https://deno.land/x/wren@0.8.0/mod.ts": "4516d9ea9393e466c94bcc525768a74af9efb7799e5df7e4b0e45474251d5f81",
     "https://deno.land/x/wren@0.8.0/response.ts": "83bf67e3a39cfd61c38b912916f4a3cb98446320b0254c62d34c897c15daa31e",
     "https://deno.land/x/wren@0.8.0/route.ts": "b1acd71c4664799edcf216d0d37c6ebab1d57ea674f5e8a72baa4bf28aaf3383",

import_map.json

@@ -1,6 +1,7 @@
 {
   "imports": {
     "http/": "https://deno.land/std@0.160.0/http/",
+    "log/": "https://deno.land/std@0.198.0/log/",
     "wren/": "https://deno.land/x/wren@0.8.0/"
   }
 }

invariant.ts

@@ -1,6 +1,7 @@
 // From https://github.com/alexreardon/tiny-invariant/blob/master/src/tiny-invariant.ts
 
-const isDenoDeploy: boolean = Deno.env.get("DENO_DEPLOYMENT_ID") !== undefined;
+import { isDenoDeploy } from "./utils.ts";
+
 const prefix: string = "Invariant failed";
 
 // Throw an error if the condition fails

logger.ts

@@ -0,0 +1,13 @@
+import * as log from "log/mod.ts";
+import { isDenoDeploy } from "./utils.ts";
+
+log.setup({
+  handlers: {
+    console: new log.handlers.ConsoleHandler("DEBUG"),
+  },
+  loggers: {
+    default: {
+      level: isDenoDeploy ? "INFO" : "DEBUG",
+    },
+  },
+});

main.ts

@@ -19,6 +19,8 @@ import {
 import { DenoAPL } from "./deno-apl.ts";
 import { fetchRemoteJwks, getAppId } from "./utils.ts";
 import { AuthData } from "npm:@saleor/app-sdk@0.43.0/APL";
+import "./logger.ts";
+import * as log from "log/mod.ts";
 
 const apl = new DenoAPL();
 
@@ -59,7 +61,10 @@ function getUrl(req: Request) {
 const routes = [
   GET("/", () => Response.OK("Hello, Root")),
   GET("/manifest", (req) => {
+    log.debug("Requesting manifest", req.headers.get("HOST"));
     const URL = getUrl(req);
+    log.debug("Determined app URL", URL);
+
     return Response.OK({
       id: "witoszekdev.dummy-payment-app",
       name: "Dummy Payment App",
@@ -117,8 +122,11 @@ const routes = [
     const authToken = json.auth_token;
     const saleorDomain = req.headers.get(SALEOR_DOMAIN_HEADER);
     const saleorApiUrl = req.headers.get(SALEOR_API_URL_HEADER);
+    log.info("Running installation", { saleorDomain, saleorApiUrl });
+    log.debug("Installation token", { authToken });
 
     if (!authToken || !saleorDomain || !saleorApiUrl) {
+      log.warning("Missing headers");
       return Response.BadRequest({
         code: "MISSING_HEADER",
         message: "One of requried headers is missing",
@@ -126,8 +134,10 @@ const routes = [
     }
 
     const appId = await getAppId({ saleorApiUrl, token: authToken });
+    log.debug("Got appId", appId);
 
     if (!appId) {
+      log.error("Missing app id", { saleorDomain, saleorApiUrl });
       return Response.BadRequest({
         code: "UNKNOWN_APP_ID",
         message: `The auth data given during registration request could not be used to fetch app ID. 
@@ -136,7 +146,9 @@ const routes = [
     }
 
     const jwks = await fetchRemoteJwks(saleorApiUrl);
+    log.debug("Got jwks", jwks);
     if (!jwks) {
+      log.error("Missing jwks", { saleorDomain, saleorApiUrl });
       return Response.BadRequest({
         code: "JWKS_NOT_AVAILABLE",
         message: "Can't fetch the remote JWKS.",
@@ -153,7 +165,9 @@ const routes = [
 
     try {
       apl.set(authData);
-    } catch (_e) {
+      log.debug("Auth data saved");
+    } catch (error) {
+      log.critical("Cannot save auth data", error);
       return Response.InternalServerError({
         code: "APL_SAVE_ERROR",
         message: "Cannot save APL",

utils.ts

@@ -53,3 +53,6 @@ export const getAppId = async ({
     return undefined;
   }
 };
+
+export const isDenoDeploy: boolean =
+  Deno.env.get("DENO_DEPLOYMENT_ID") !== undefined;