Merge pull request eco-stake#72 from eco-stake/expire-image-cache

Expire validator image cache after 3 days
LPX55 · Mar 7, 2022 · fdeb614 · fdeb614
2 parents 3d45faa + 54660dd
commit fdeb614
Showing 1 changed file with 24 additions and 4 deletions.
diff --git a/src/components/App.js b/src/components/App.js
@@ -123,12 +123,32 @@ class App extends React.Component {
     })
   }
 
-  getValidatorImage(network, validatorAddress){
+  getValidatorImage(network, validatorAddress, expireCache){
     const images = this.state.validatorImages[network.name] || {}
     if(images[validatorAddress]){
       return images[validatorAddress]
     }
-    return localStorage.getItem(validatorAddress)
+    return this.getValidatorImageCache(validatorAddress, expireCache)
+  }
+
+  getValidatorImageCache(validatorAddress, expireCache){
+    const cache = localStorage.getItem(validatorAddress)
+    if(!cache) return
+
+    let cacheData = {}
+    try {
+      cacheData = JSON.parse(cache)
+    } catch {
+      cacheData.url = cache
+    }
+    if(!cacheData.url) return
+    if(!expireCache) return cacheData.url
+
+    const cacheTime = cacheData.time && new Date(cacheData.time)
+    if(!cacheData.time) return
+
+    const expiry = new Date() - 1000 * 60 * 60 * 24 * 3
+    if(cacheTime >= expiry) return cacheData.url
   }
 
   async loadValidatorImages(network, validators) {
@@ -137,7 +157,7 @@ class App extends React.Component {
     }));
     const calls = Object.values(validators).map(validator => {
       return () => {
-        if(validator.description.identity && !this.getValidatorImage(network, validator.operator_address)){
+        if(validator.description.identity && !this.getValidatorImage(network, validator.operator_address, true)){
           return fetch("https://keybase.io/_/api/1.0/user/lookup.json?fields=pictures&key_suffix=" + validator.description.identity)
             .then((response) => {
               return response.json();
@@ -147,7 +167,7 @@ class App extends React.Component {
                 this.setState((state, props) => ({
                   validatorImages: _.set(state.validatorImages, [network.name, validator.operator_address], imageUrl)
                 }));
-                localStorage.setItem(validator.operator_address, imageUrl)
+                localStorage.setItem(validator.operator_address, JSON.stringify({url: imageUrl, time: +new Date()}))
               }
             }, error => { })
         }else{