Don't fail when no IP can be fetched (#58)

Pipfile

@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+flask = "*"
+instamojo-wrapper = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3.7"

README.md

@@ -3,14 +3,12 @@
 Installation:
 Create a virtualenv and install requirements
 ```
-virtualenv env
-. env/bin/activate
-pip install -r requirements.txt
+pipenv install
 ```
 
 Start the server:
 ```
-python main.py
+pipenv run python main.py
 ```
 
 Deploy to heroku (on master branch):

static/js/banditLocal.js

@@ -1,9 +1,9 @@
-let experimentId = "84a8cc7a-9156-41fb-af9d-8001c8e1897b";
+let experimentId = "4e3b296f-c9b3-4af6-a498-e6d9888aaf55";
 let bandit = new banditml.BanditAPI(
-  apiKey = "6bd9ba8f-bd71-3139-a6e5-41275f34afe9",
+  apiKey = "4be5e740e5d4ee99accc33b903cdb8e4",
   recClassByExperimentId = {[experimentId]: "product-recs"},
   config = {
-    debugMode: true,
+    debugMode: false,
     banditHostUrl: "http://localhost:8000/api/",
     debugOptions: {forceVariantSlug: "tf"}
   }

static/js/banditMl.js

@@ -331,7 +331,8 @@ banditml.BanditAPI.prototype.validateAndFilterFeaturesInContext = function (cont
         this.logError(msg, {featureName: featureName}, e);
       }
     } else {
-      console.warn(`Feature ${featureName} is not defined in experiment context. Including it, but check experiment dash.`);
+      // This is noisy, so let's silence it for now
+      // console.warn(`Feature ${featureName} is not defined in experiment context. Including it, but check experiment dash.`);
       filteredFeatures[featureName] = context[featureName];
     }
   }
@@ -513,16 +514,21 @@ banditml.BanditAPI.prototype.getDecision = async function (
 
   let context = self.getContext(experimentId);
   if (!('ipAddress' in context)) {
+    let ipResult;
     try {
-      let ipPromise = self.asyncGetRequest(
-        self.ipUrl,
-        params = {},
-        headers = {
-          'Content-Type': 'application/json',
-          'Accept': 'application/json'
-        }
-      );
-      let ipResult = await ipPromise;
+      try {
+        let ipPromise = self.asyncGetRequest(
+          self.ipUrl,
+          params = {},
+          headers = {
+            'Content-Type': 'application/json',
+            'Accept': 'application/json'
+          }
+        );
+        ipResult = await ipPromise;
+      } catch (err) {
+        ipResult = {"ip": "unset-IP-session-" + this.getSessionId()};
+      }
       const ipAddress = ipResult.ip;
       context.ipAddress = ipAddress;
       context = self.updateContext(context, experimentId);