From ecb1dc3a656d30b32ae8f820d113701eca5ceb46 Mon Sep 17 00:00:00 2001
From: Thunnini <yunjh1994@gmail.com>
Date: Tue, 20 Apr 2021 17:02:47 +0900
Subject: [PATCH] Temporary fix for the sifchain #84 #81

---
 .../src/query/cosmos/supply/inflation.ts      | 97 ++++++++++---------
 1 file changed, 53 insertions(+), 44 deletions(-)

diff --git a/packages/stores/src/query/cosmos/supply/inflation.ts b/packages/stores/src/query/cosmos/supply/inflation.ts
index c6839ef143..fb20259d9f 100644
--- a/packages/stores/src/query/cosmos/supply/inflation.ts
+++ b/packages/stores/src/query/cosmos/supply/inflation.ts
@@ -41,56 +41,65 @@ export class ObservableQueryInflation {
   // If the staking pool info is fetched, this will consider this info for calculating the more accurate value.
   @computed
   get inflation(): IntPretty {
-    let dec: Dec | undefined;
+    try {
+      let dec: Dec | undefined;
 
-    // XXX: Hard coded part for the iris hub and sifchain.
-    // TODO: Remove this part.
-    const chainInfo = this.chainGetter.getChain(this.chainId);
-    if (chainInfo.chainId.startsWith("irishub")) {
-      dec = new Dec(
-        this._queryIrisMint.response?.data.result.inflation ?? "0"
-      ).mul(DecUtils.getPrecisionDec(2));
-    } else if (chainInfo.chainId.startsWith("sifchain")) {
-      return new IntPretty(
-        new Dec(this._querySifchainAPY.liquidityAPY.toString())
-      );
-    } else {
-      dec = new Dec(this._queryMint.response?.data.result ?? "0").mul(
-        DecUtils.getPrecisionDec(2)
-      );
-    }
+      // XXX: Hard coded part for the iris hub and sifchain.
+      // TODO: Remove this part.
+      const chainInfo = this.chainGetter.getChain(this.chainId);
+      if (chainInfo.chainId.startsWith("irishub")) {
+        dec = new Dec(
+          this._queryIrisMint.response?.data.result.inflation ?? "0"
+        ).mul(DecUtils.getPrecisionDec(2));
+      } else if (chainInfo.chainId.startsWith("sifchain")) {
+        return new IntPretty(
+          new Dec(this._querySifchainAPY.liquidityAPY.toString())
+        );
+      } else {
+        dec = new Dec(this._queryMint.response?.data.result ?? "0").mul(
+          DecUtils.getPrecisionDec(2)
+        );
+      }
 
-    if (!dec || dec.equals(new Dec(0))) {
-      return new IntPretty(new Int(0)).ready(false);
-    }
+      if (!dec || dec.equals(new Dec(0))) {
+        return new IntPretty(new Int(0)).ready(false);
+      }
 
-    if (
-      this._queryPool.response &&
-      this._querySupplyTotal.getQueryStakeDenom().response
-    ) {
-      const bondedToken = new Dec(
-        this._queryPool.response.data.result.bonded_tokens
-      );
-      const totalStr = (() => {
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-        const response = this._querySupplyTotal.getQueryStakeDenom().response!
-          .data.result;
+      if (
+        this._queryPool.response &&
+        this._querySupplyTotal.getQueryStakeDenom().response
+      ) {
+        const bondedToken = new Dec(
+          this._queryPool.response.data.result.bonded_tokens
+        );
+        const totalStr = (() => {
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          const response = this._querySupplyTotal.getQueryStakeDenom().response!
+            .data.result;
 
-        if (typeof response === "string") {
-          return response;
-        } else {
-          return response.amount;
-        }
-      })();
-      const total = new Dec(totalStr);
-      if (total.gt(new Dec(0))) {
-        const ratio = bondedToken.quo(total);
+          if (typeof response === "string") {
+            return response;
+          } else {
+            return response.amount;
+          }
+        })();
+        const total = new Dec(totalStr);
+        if (total.gt(new Dec(0))) {
+          const ratio = bondedToken.quo(total);
 
-        dec = dec.quo(ratio);
-        // TODO: Rounding?
+          dec = dec.quo(ratio);
+          // TODO: Rounding?
+        }
       }
-    }
 
-    return new IntPretty(dec);
+      return new IntPretty(dec);
+    } catch (e) {
+      console.log(e);
+      // XXX: There have been reported errors regarding Sifchain.
+      // However, I wasn’t able to reproduce the error so exact cause haven’t been identified.
+      // For now, use try-catch on suspect parts to resolve the issue. Will be on a lookout for a more permanent solution in the future.
+
+      return new IntPretty(new Int(0)).ready(false);
+    }
   }
 }