Ported getBestBlockHash()

src/routes/v3/full-node/blockchain2.js

@@ -29,12 +29,27 @@ class Blockchain {
 
     this.router = router
     this.router.get("/", this.root)
+    this.router.get("/getBestBlockHash", this.getBestBlockHash)
+    this.router.get("/getBlockchainInfo", this.getBlockchainInfo)
   }
 
   root(req, res, next) {
     return res.json({ status: "blockchain" })
   }
 
+  // DRY error handler.
+  errorHandler(err, res) {
+    // Attempt to decode the error message.
+    const { msg, status } = routeUtils.decodeError(err)
+    if (msg) {
+      res.status(status)
+      return res.json({ error: msg })
+    }
+
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+
   /**
    * @api {get} /blockchain/getBestBlockHash Get best block hash
    * @apiName GetBestBlockHash
@@ -60,19 +75,54 @@ class Blockchain {
 
       return res.json(response.data.result)
     } catch (err) {
-      // Attempt to decode the error message.
-      const { msg, status } = routeUtils.decodeError(err)
-      if (msg) {
-        res.status(status)
-        return res.json({ error: msg })
-      }
-
       // Write out error to error log.
-      //logger.error(`Error in rawtransactions/decodeRawTransaction: `, err)
       wlogger.error(`Error in blockchain.ts/getBestBlockHash().`, err)
 
-      res.status(500)
-      return res.json({ error: util.inspect(err) })
+      return this.errorHandler(err, res)
+    }
+  }
+
+  /**
+   * @api {get} /blockchain/getBlockchainInfo Get blockchain info
+   * @apiName GetBlockchainInfo
+   * @apiGroup Blockchain
+   * @apiDescription Returns an object containing various state info regarding blockchain processing.
+   *
+   * @apiExample Example usage:
+   * curl -X GET "https://mainnet.bchjs.cash/v3/blockchain/getBlockchainInfo" -H "accept: application/json"
+   *
+   * @apiSuccess {Object}   object                      Object containing data
+   * @apiSuccess {String}   object.chain                "main"
+   * @apiSuccess {Number}   object.blocks               561838
+   * @apiSuccess {Number}   object.headers              561838
+   * @apiSuccess {String}   object.bestblockhash        "000000000000000002307dd38cd01c7308b8febfcdf5772cf087b5bb023d55bc"
+   * @apiSuccess {Number}   object.difficulty           246585566638.1496
+   * @apiSuccess {String}   object.mediantime           1545402693
+   * @apiSuccess {Number}   object.verificationprogress 0.999998831622689
+   * @apiSuccess {Boolean}  object.chainwork            "000000000000000000000000000000000000000000d8c09a8ab7262080266b3e"
+   * @apiSuccess {Number}   object.pruned               false
+   * @apiSuccess {Array}    object.softforks            Array of objects
+   * @apiSuccess {String}   object.softforks.id         "bip34"
+   * @apiSuccess {String}   object.softforks.version    2
+   * @apiSuccess {Object}   object.softforks.reject
+   * @apiSuccess {String}   object.softforks.reject.status true
+   */
+  async getBlockchainInfo(req, res, next) {
+    try {
+      // Axios options
+      const options = routeUtils.getAxiosOptions()
+      options.data.id = "getblockchaininfo"
+      options.data.method = "getblockchaininfo"
+      options.data.params = []
+
+      const response = await this.axios.request(options)
+
+      return res.json(response.data.result)
+    } catch (err) {
+      // Write out error to error log.
+      wlogger.error(`Error in blockchain.ts/getBlockchainInfo().`, err)
+
+      return this.errorHandler(err, res)
     }
   }
 }