historical order query

db.js

@@ -1,11 +1,11 @@
 import pg from 'pg'
 
-export const pool = new pg.Pool({
+export const dbpool = new pg.Pool({
     connectionString: process.env.DEXORDER_DB_URL || 'postgres://dexorder:redroxed@localhost:5432/dexorder',
     max: parseInt(process.env.DEXORDER_POOL_SIZE) || 10,
     idleTimeoutMillis: parseInt(process.env.DEXORDER_POOL_TIMEOUT) || 10*60*1000,
 })
 
-pool.on('connect', (client) => {
+dbpool.on('connect', (client) => {
     client.query("SET TIME ZONE 'UTC'")
 })

order.js

@@ -1,20 +1,37 @@
 import {orderFilled, orderStatuses, vaultOpenOrders} from "./cache.js"
 import {applyFills} from "../web/src/blockchain/common.js"
+import {dbpool} from "./db.js";
 
 
 export function sendVaultOrders( socket, chainId, vault ) {
+
     vaultOpenOrders.get(chainId, vault).then(async (orderIndexes)=>{
-        const result = []
+        const statuses = {}
         if( orderIndexes !== null ) {
             for (const orderIndex of JSON.parse(orderIndexes)) {
                 // there is a race condition here since we need multiple queries to get the complete order status,
-                // so we diligently check for nulls and exclude such an order, since it was deleted and no longer active.
+                // so we check for nulls and exclude such an order, since it was deleted and no longer active.
                 const status = await orderStatus(chainId, vault, orderIndex)
                 if (status !== null)
-                    result.push([orderIndex, status])
+                    statuses[orderIndex] = status
             }
         }
-        socket.emit('os', chainId, vault, result)
+        recentOrders(socket, chainId, vault).then(async (recents)=>{
+            const proms = []
+            for( let [orderIndex, status] of recents ) {
+                if( !(orderIndex in statuses) ) {
+                    // only write the database version if there's no open order in the memcache
+                    const orderKey = `${vault}|${orderIndex}`
+                    proms.push(fillOrderStatus(chainId, orderKey, status))
+                    statuses[orderIndex] = status
+                }
+            }
+            await Promise.all(proms)
+            const result = []
+            for( const index of Object.keys(statuses).sort())
+                result.push([index, statuses[index]])
+            socket.emit('os', chainId, vault, result)
+        })
     })
 }
 
@@ -27,10 +44,29 @@ export async function orderStatus( chainId, vault, orderIndex ) {
     let status = await orderStatuses.get(chainId, orderKey)
     if( status !== null ) {
         status = JSON.parse(status)
-        const fills = await orderFilled.get(chainId, orderKey)
-        if (fills !== null) {
-            applyFills(status, JSON.parse(fills))
-        }
+        await fillOrderStatus(chainId, orderKey, status)
     }
     return status
 }
+
+async function fillOrderStatus( chainId, orderKey, status ) {
+    const fills = await orderFilled.get(chainId, orderKey)
+    if (fills !== null)
+        applyFills(status, JSON.parse(fills))
+}
+
+export async function recentOrders( socket, chainId, vault, limit=25 ) {
+    const db = await dbpool.connect()
+    const sql =
+        `select oi.order_index, sd.value from seriesdict sd, orderindex oi
+            where oi.chain=${chainId} and oi.vault='${vault}'
+                and sd.series='o' and sd.key=concat('${vault}','|',to_char(oi.order_index, 'FM00000')) 
+            order by oi.order_index desc limit ${limit}`;
+    console.log('sql',sql)
+    const query = await db.query(sql)
+    console.log('got historical statuses', query)
+    const result = []
+    for( const {order_index, value} of query.rows)
+        result.push([order_index,JSON.parse(value)])
+    return result
+}

token.js

@@ -13,7 +13,7 @@ const tokens = {
 }
 
 export async function lookupToken(chainId, address) {
-    console.log('lookupToken', chainId, address)
+    // console.log('lookupToken', chainId, address)
     const chainTokens = tokens[chainId]
     if( chainTokens === undefined ) {
         console.log('no tokens for chain', chainId)
@@ -21,14 +21,14 @@ export async function lookupToken(chainId, address) {
     }
     try {
         let result = chainTokens[address]
-        console.log('found', result)
+        // console.log('found', result)
         if (result === undefined) {
             // todo look in tokens project
             const addr = ethers.getAddress(address)
-            console.log('addr', addr)
+            // console.log('addr', addr)
             const token = new ethers.Contract(addr, erc20Abi, getProvider(chainId))
             const symbol = await token.symbol()
-            console.log('symbol', symbol)
+            // console.log('symbol', symbol)
             const decimals = Number(await token.decimals())
             result = {name: null, symbol, decimals, address: addr}
             chainTokens[addr] = result