Merge branch 'master' into crud-quotas

lerna.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.0.149",
+  "version": "1.0.151",
   "npmClient": "yarn",
   "packages": [
     "packages/*"

packages/backend-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@budibase/backend-core",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Budibase backend core libraries used in server and worker",
   "main": "src/index.js",
   "author": "Budibase",
@@ -13,7 +13,7 @@
     "@techpass/passport-openidconnect": "^0.3.0",
     "aws-sdk": "^2.901.0",
     "bcryptjs": "^2.4.3",
-    "cls-hooked": "^4.2.2",
+    "emitter-listener": "^1.1.2",
     "ioredis": "^4.27.1",
     "jsonwebtoken": "^8.5.1",
     "koa-passport": "^4.1.4",

packages/backend-core/src/clshooked/index.js

@@ -0,0 +1,650 @@
+const util = require("util")
+const assert = require("assert")
+const wrapEmitter = require("emitter-listener")
+const async_hooks = require("async_hooks")
+
+const CONTEXTS_SYMBOL = "cls@contexts"
+const ERROR_SYMBOL = "error@context"
+
+const DEBUG_CLS_HOOKED = process.env.DEBUG_CLS_HOOKED
+
+let currentUid = -1
+
+module.exports = {
+  getNamespace: getNamespace,
+  createNamespace: createNamespace,
+  destroyNamespace: destroyNamespace,
+  reset: reset,
+  ERROR_SYMBOL: ERROR_SYMBOL,
+}
+
+function Namespace(name) {
+  this.name = name
+  // changed in 2.7: no default context
+  this.active = null
+  this._set = []
+  this.id = null
+  this._contexts = new Map()
+  this._indent = 0
+  this._hook = null
+}
+
+Namespace.prototype.set = function set(key, value) {
+  if (!this.active) {
+    throw new Error(
+      "No context available. ns.run() or ns.bind() must be called first."
+    )
+  }
+
+  this.active[key] = value
+
+  if (DEBUG_CLS_HOOKED) {
+    const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+    debug2(
+      indentStr +
+        "CONTEXT-SET KEY:" +
+        key +
+        "=" +
+        value +
+        " in ns:" +
+        this.name +
+        " currentUid:" +
+        currentUid +
+        " active:" +
+        util.inspect(this.active, { showHidden: true, depth: 2, colors: true })
+    )
+  }
+
+  return value
+}
+
+Namespace.prototype.get = function get(key) {
+  if (!this.active) {
+    if (DEBUG_CLS_HOOKED) {
+      const asyncHooksCurrentId = async_hooks.currentId()
+      const triggerId = async_hooks.triggerAsyncId()
+      const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+      debug2(
+        `${indentStr}CONTEXT-GETTING KEY NO ACTIVE NS: (${this.name}) ${key}=undefined currentUid:${currentUid} asyncHooksCurrentId:${asyncHooksCurrentId} triggerId:${triggerId} len:${this._set.length}`
+      )
+    }
+    return undefined
+  }
+  if (DEBUG_CLS_HOOKED) {
+    const asyncHooksCurrentId = async_hooks.executionAsyncId()
+    const triggerId = async_hooks.triggerAsyncId()
+    const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+    debug2(
+      indentStr +
+        "CONTEXT-GETTING KEY:" +
+        key +
+        "=" +
+        this.active[key] +
+        " (" +
+        this.name +
+        ") currentUid:" +
+        currentUid +
+        " active:" +
+        util.inspect(this.active, { showHidden: true, depth: 2, colors: true })
+    )
+    debug2(
+      `${indentStr}CONTEXT-GETTING KEY: (${this.name}) ${key}=${
+        this.active[key]
+      } currentUid:${currentUid} asyncHooksCurrentId:${asyncHooksCurrentId} triggerId:${triggerId} len:${
+        this._set.length
+      } active:${util.inspect(this.active)}`
+    )
+  }
+  return this.active[key]
+}
+
+Namespace.prototype.createContext = function createContext() {
+  // Prototype inherit existing context if created a new child context within existing context.
+  let context = Object.create(this.active ? this.active : Object.prototype)
+  context._ns_name = this.name
+  context.id = currentUid
+
+  if (DEBUG_CLS_HOOKED) {
+    const asyncHooksCurrentId = async_hooks.executionAsyncId()
+    const triggerId = async_hooks.triggerAsyncId()
+    const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+    debug2(
+      `${indentStr}CONTEXT-CREATED Context: (${
+        this.name
+      }) currentUid:${currentUid} asyncHooksCurrentId:${asyncHooksCurrentId} triggerId:${triggerId} len:${
+        this._set.length
+      } context:${util.inspect(context, {
+        showHidden: true,
+        depth: 2,
+        colors: true,
+      })}`
+    )
+  }
+
+  return context
+}
+
+Namespace.prototype.run = function run(fn) {
+  let context = this.createContext()
+  this.enter(context)
+
+  try {
+    if (DEBUG_CLS_HOOKED) {
+      const triggerId = async_hooks.triggerAsyncId()
+      const asyncHooksCurrentId = async_hooks.executionAsyncId()
+      const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+      debug2(
+        `${indentStr}CONTEXT-RUN BEGIN: (${
+          this.name
+        }) currentUid:${currentUid} triggerId:${triggerId} asyncHooksCurrentId:${asyncHooksCurrentId} len:${
+          this._set.length
+        } context:${util.inspect(context)}`
+      )
+    }
+    fn(context)
+    return context
+  } catch (exception) {
+    if (exception) {
+      exception[ERROR_SYMBOL] = context
+    }
+    throw exception
+  } finally {
+    if (DEBUG_CLS_HOOKED) {
+      const triggerId = async_hooks.triggerAsyncId()
+      const asyncHooksCurrentId = async_hooks.executionAsyncId()
+      const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+      debug2(
+        `${indentStr}CONTEXT-RUN END: (${
+          this.name
+        }) currentUid:${currentUid} triggerId:${triggerId} asyncHooksCurrentId:${asyncHooksCurrentId} len:${
+          this._set.length
+        } ${util.inspect(context)}`
+      )
+    }
+    this.exit(context)
+  }
+}
+
+Namespace.prototype.runAndReturn = function runAndReturn(fn) {
+  let value
+  this.run(function (context) {
+    value = fn(context)
+  })
+  return value
+}
+
+/**
+ * Uses global Promise and assumes Promise is cls friendly or wrapped already.
+ * @param {function} fn
+ * @returns {*}
+ */
+Namespace.prototype.runPromise = function runPromise(fn) {
+  let context = this.createContext()
+  this.enter(context)
+
+  let promise = fn(context)
+  if (!promise || !promise.then || !promise.catch) {
+    throw new Error("fn must return a promise.")
+  }
+
+  if (DEBUG_CLS_HOOKED) {
+    debug2(
+      "CONTEXT-runPromise BEFORE: (" +
+        this.name +
+        ") currentUid:" +
+        currentUid +
+        " len:" +
+        this._set.length +
+        " " +
+        util.inspect(context)
+    )
+  }
+
+  return promise
+    .then(result => {
+      if (DEBUG_CLS_HOOKED) {
+        debug2(
+          "CONTEXT-runPromise AFTER then: (" +
+            this.name +
+            ") currentUid:" +
+            currentUid +
+            " len:" +
+            this._set.length +
+            " " +
+            util.inspect(context)
+        )
+      }
+      this.exit(context)
+      return result
+    })
+    .catch(err => {
+      err[ERROR_SYMBOL] = context
+      if (DEBUG_CLS_HOOKED) {
+        debug2(
+          "CONTEXT-runPromise AFTER catch: (" +
+            this.name +
+            ") currentUid:" +
+            currentUid +
+            " len:" +
+            this._set.length +
+            " " +
+            util.inspect(context)
+        )
+      }
+      this.exit(context)
+      throw err
+    })
+}
+
+Namespace.prototype.bind = function bindFactory(fn, context) {
+  if (!context) {
+    if (!this.active) {
+      context = this.createContext()
+    } else {
+      context = this.active
+    }
+  }
+
+  let self = this
+  return function clsBind() {
+    self.enter(context)
+    try {
+      return fn.apply(this, arguments)
+    } catch (exception) {
+      if (exception) {
+        exception[ERROR_SYMBOL] = context
+      }
+      throw exception
+    } finally {
+      self.exit(context)
+    }
+  }
+}
+
+Namespace.prototype.enter = function enter(context) {
+  assert.ok(context, "context must be provided for entering")
+  if (DEBUG_CLS_HOOKED) {
+    const asyncHooksCurrentId = async_hooks.executionAsyncId()
+    const triggerId = async_hooks.triggerAsyncId()
+    const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+    debug2(
+      `${indentStr}CONTEXT-ENTER: (${
+        this.name
+      }) currentUid:${currentUid} triggerId:${triggerId} asyncHooksCurrentId:${asyncHooksCurrentId} len:${
+        this._set.length
+      } ${util.inspect(context)}`
+    )
+  }
+
+  this._set.push(this.active)
+  this.active = context
+}
+
+Namespace.prototype.exit = function exit(context) {
+  assert.ok(context, "context must be provided for exiting")
+  if (DEBUG_CLS_HOOKED) {
+    const asyncHooksCurrentId = async_hooks.executionAsyncId()
+    const triggerId = async_hooks.triggerAsyncId()
+    const indentStr = " ".repeat(this._indent < 0 ? 0 : this._indent)
+    debug2(
+      `${indentStr}CONTEXT-EXIT: (${
+        this.name
+      }) currentUid:${currentUid} triggerId:${triggerId} asyncHooksCurrentId:${asyncHooksCurrentId} len:${
+        this._set.length
+      } ${util.inspect(context)}`
+    )
+  }
+
+  // Fast path for most exits that are at the top of the stack
+  if (this.active === context) {
+    assert.ok(this._set.length, "can't remove top context")
+    this.active = this._set.pop()
+    return
+  }
+
+  // Fast search in the stack using lastIndexOf
+  let index = this._set.lastIndexOf(context)
+
+  if (index < 0) {
+    if (DEBUG_CLS_HOOKED) {
+      debug2(
+        "??ERROR?? context exiting but not entered - ignoring: " +
+          util.inspect(context)
+      )
+    }
+    assert.ok(
+      index >= 0,
+      "context not currently entered; can't exit. \n" +
+        util.inspect(this) +
+        "\n" +
+        util.inspect(context)
+    )
+  } else {
+    assert.ok(index, "can't remove top context")
+    this._set.splice(index, 1)
+  }
+}
+
+Namespace.prototype.bindEmitter = function bindEmitter(emitter) {
+  assert.ok(
+    emitter.on && emitter.addListener && emitter.emit,
+    "can only bind real EEs"
+  )
+
+  let namespace = this
+  let thisSymbol = "context@" + this.name
+
+  // Capture the context active at the time the emitter is bound.
+  function attach(listener) {
+    if (!listener) {
+      return
+    }
+    if (!listener[CONTEXTS_SYMBOL]) {
+      listener[CONTEXTS_SYMBOL] = Object.create(null)
+    }
+
+    listener[CONTEXTS_SYMBOL][thisSymbol] = {
+      namespace: namespace,
+      context: namespace.active,
+    }
+  }
+
+  // At emit time, bind the listener within the correct context.
+  function bind(unwrapped) {
+    if (!(unwrapped && unwrapped[CONTEXTS_SYMBOL])) {
+      return unwrapped
+    }
+
+    let wrapped = unwrapped
+    let unwrappedContexts = unwrapped[CONTEXTS_SYMBOL]
+    Object.keys(unwrappedContexts).forEach(function (name) {
+      let thunk = unwrappedContexts[name]
+      wrapped = thunk.namespace.bind(wrapped, thunk.context)
+    })
+    return wrapped
+  }
+
+  wrapEmitter(emitter, attach, bind)
+}
+
+/**
+ * If an error comes out of a namespace, it will have a context attached to it.
+ * This function knows how to find it.
+ *
+ * @param {Error} exception Possibly annotated error.
+ */
+Namespace.prototype.fromException = function fromException(exception) {
+  return exception[ERROR_SYMBOL]
+}
+
+function getNamespace(name) {
+  return process.namespaces[name]
+}
+
+function createNamespace(name) {
+  assert.ok(name, "namespace must be given a name.")
+
+  if (DEBUG_CLS_HOOKED) {
+    debug2(`NS-CREATING NAMESPACE (${name})`)
+  }
+  let namespace = new Namespace(name)
+  namespace.id = currentUid
+
+  const hook = async_hooks.createHook({
+    init(asyncId, type, triggerId, resource) {
+      currentUid = async_hooks.executionAsyncId()
+
+      //CHAIN Parent's Context onto child if none exists. This is needed to pass net-events.spec
+      // let initContext = namespace.active;
+      // if(!initContext && triggerId) {
+      //   let parentContext = namespace._contexts.get(triggerId);
+      //   if (parentContext) {
+      //     namespace.active = parentContext;
+      //     namespace._contexts.set(currentUid, parentContext);
+      //     if (DEBUG_CLS_HOOKED) {
+      //       const indentStr = ' '.repeat(namespace._indent < 0 ? 0 : namespace._indent);
+      //       debug2(`${indentStr}INIT [${type}] (${name}) WITH PARENT CONTEXT asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(namespace.active, true)} resource:${resource}`);
+      //     }
+      //   } else if (DEBUG_CLS_HOOKED) {
+      //       const indentStr = ' '.repeat(namespace._indent < 0 ? 0 : namespace._indent);
+      //       debug2(`${indentStr}INIT [${type}] (${name}) MISSING CONTEXT asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(namespace.active, true)} resource:${resource}`);
+      //     }
+      // }else {
+      //   namespace._contexts.set(currentUid, namespace.active);
+      //   if (DEBUG_CLS_HOOKED) {
+      //     const indentStr = ' '.repeat(namespace._indent < 0 ? 0 : namespace._indent);
+      //     debug2(`${indentStr}INIT [${type}] (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(namespace.active, true)} resource:${resource}`);
+      //   }
+      // }
+      if (namespace.active) {
+        namespace._contexts.set(asyncId, namespace.active)
+
+        if (DEBUG_CLS_HOOKED) {
+          const indentStr = " ".repeat(
+            namespace._indent < 0 ? 0 : namespace._indent
+          )
+          debug2(
+            `${indentStr}INIT [${type}] (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+              namespace.active,
+              { showHidden: true, depth: 2, colors: true }
+            )} resource:${resource}`
+          )
+        }
+      } else if (currentUid === 0) {
+        // CurrentId will be 0 when triggered from C++. Promise events
+        // https://github.com/nodejs/node/blob/master/doc/api/async_hooks.md#triggerid
+        const triggerId = async_hooks.triggerAsyncId()
+        const triggerIdContext = namespace._contexts.get(triggerId)
+        if (triggerIdContext) {
+          namespace._contexts.set(asyncId, triggerIdContext)
+          if (DEBUG_CLS_HOOKED) {
+            const indentStr = " ".repeat(
+              namespace._indent < 0 ? 0 : namespace._indent
+            )
+            debug2(
+              `${indentStr}INIT USING CONTEXT FROM TRIGGERID [${type}] (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+                namespace.active,
+                { showHidden: true, depth: 2, colors: true }
+              )} resource:${resource}`
+            )
+          }
+        } else if (DEBUG_CLS_HOOKED) {
+          const indentStr = " ".repeat(
+            namespace._indent < 0 ? 0 : namespace._indent
+          )
+          debug2(
+            `${indentStr}INIT MISSING CONTEXT [${type}] (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+              namespace.active,
+              { showHidden: true, depth: 2, colors: true }
+            )} resource:${resource}`
+          )
+        }
+      }
+
+      if (DEBUG_CLS_HOOKED && type === "PROMISE") {
+        debug2(util.inspect(resource, { showHidden: true }))
+        const parentId = resource.parentId
+        const indentStr = " ".repeat(
+          namespace._indent < 0 ? 0 : namespace._indent
+        )
+        debug2(
+          `${indentStr}INIT RESOURCE-PROMISE [${type}] (${name}) parentId:${parentId} asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+            namespace.active,
+            { showHidden: true, depth: 2, colors: true }
+          )} resource:${resource}`
+        )
+      }
+    },
+    before(asyncId) {
+      currentUid = async_hooks.executionAsyncId()
+      let context
+
+      /*
+      if(currentUid === 0){
+        // CurrentId will be 0 when triggered from C++. Promise events
+        // https://github.com/nodejs/node/blob/master/doc/api/async_hooks.md#triggerid
+        //const triggerId = async_hooks.triggerAsyncId();
+        context = namespace._contexts.get(asyncId); // || namespace._contexts.get(triggerId);
+      }else{
+        context = namespace._contexts.get(currentUid);
+      }
+      */
+
+      //HACK to work with promises until they are fixed in node > 8.1.1
+      context =
+        namespace._contexts.get(asyncId) || namespace._contexts.get(currentUid)
+
+      if (context) {
+        if (DEBUG_CLS_HOOKED) {
+          const triggerId = async_hooks.triggerAsyncId()
+          const indentStr = " ".repeat(
+            namespace._indent < 0 ? 0 : namespace._indent
+          )
+          debug2(
+            `${indentStr}BEFORE (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+              namespace.active,
+              { showHidden: true, depth: 2, colors: true }
+            )} context:${util.inspect(context)}`
+          )
+          namespace._indent += 2
+        }
+
+        namespace.enter(context)
+      } else if (DEBUG_CLS_HOOKED) {
+        const triggerId = async_hooks.triggerAsyncId()
+        const indentStr = " ".repeat(
+          namespace._indent < 0 ? 0 : namespace._indent
+        )
+        debug2(
+          `${indentStr}BEFORE MISSING CONTEXT (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+            namespace.active,
+            { showHidden: true, depth: 2, colors: true }
+          )} namespace._contexts:${util.inspect(namespace._contexts, {
+            showHidden: true,
+            depth: 2,
+            colors: true,
+          })}`
+        )
+        namespace._indent += 2
+      }
+    },
+    after(asyncId) {
+      currentUid = async_hooks.executionAsyncId()
+      let context // = namespace._contexts.get(currentUid);
+      /*
+      if(currentUid === 0){
+        // CurrentId will be 0 when triggered from C++. Promise events
+        // https://github.com/nodejs/node/blob/master/doc/api/async_hooks.md#triggerid
+        //const triggerId = async_hooks.triggerAsyncId();
+        context = namespace._contexts.get(asyncId); // || namespace._contexts.get(triggerId);
+      }else{
+        context = namespace._contexts.get(currentUid);
+      }
+      */
+      //HACK to work with promises until they are fixed in node > 8.1.1
+      context =
+        namespace._contexts.get(asyncId) || namespace._contexts.get(currentUid)
+
+      if (context) {
+        if (DEBUG_CLS_HOOKED) {
+          const triggerId = async_hooks.triggerAsyncId()
+          namespace._indent -= 2
+          const indentStr = " ".repeat(
+            namespace._indent < 0 ? 0 : namespace._indent
+          )
+          debug2(
+            `${indentStr}AFTER (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+              namespace.active,
+              { showHidden: true, depth: 2, colors: true }
+            )} context:${util.inspect(context)}`
+          )
+        }
+
+        namespace.exit(context)
+      } else if (DEBUG_CLS_HOOKED) {
+        const triggerId = async_hooks.triggerAsyncId()
+        namespace._indent -= 2
+        const indentStr = " ".repeat(
+          namespace._indent < 0 ? 0 : namespace._indent
+        )
+        debug2(
+          `${indentStr}AFTER MISSING CONTEXT (${name}) asyncId:${asyncId} currentUid:${currentUid} triggerId:${triggerId} active:${util.inspect(
+            namespace.active,
+            { showHidden: true, depth: 2, colors: true }
+          )} context:${util.inspect(context)}`
+        )
+      }
+    },
+    destroy(asyncId) {
+      currentUid = async_hooks.executionAsyncId()
+      if (DEBUG_CLS_HOOKED) {
+        const triggerId = async_hooks.triggerAsyncId()
+        const indentStr = " ".repeat(
+          namespace._indent < 0 ? 0 : namespace._indent
+        )
+        debug2(
+          `${indentStr}DESTROY (${name}) currentUid:${currentUid} asyncId:${asyncId} triggerId:${triggerId} active:${util.inspect(
+            namespace.active,
+            { showHidden: true, depth: 2, colors: true }
+          )} context:${util.inspect(namespace._contexts.get(currentUid))}`
+        )
+      }
+
+      namespace._contexts.delete(asyncId)
+    },
+  })
+
+  hook.enable()
+  namespace._hook = hook
+
+  process.namespaces[name] = namespace
+  return namespace
+}
+
+function destroyNamespace(name) {
+  let namespace = getNamespace(name)
+
+  assert.ok(namespace, "can't delete nonexistent namespace! \"" + name + '"')
+  assert.ok(
+    namespace.id,
+    "don't assign to process.namespaces directly! " + util.inspect(namespace)
+  )
+
+  namespace._hook.disable()
+  namespace._contexts = null
+  process.namespaces[name] = null
+}
+
+function reset() {
+  // must unregister async listeners
+  if (process.namespaces) {
+    Object.keys(process.namespaces).forEach(function (name) {
+      destroyNamespace(name)
+    })
+  }
+  process.namespaces = Object.create(null)
+}
+
+process.namespaces = process.namespaces || {}
+
+//const fs = require('fs');
+function debug2(...args) {
+  if (DEBUG_CLS_HOOKED) {
+    //fs.writeSync(1, `${util.format(...args)}\n`);
+    process._rawDebug(`${util.format(...args)}`)
+  }
+}
+
+/*function getFunctionName(fn) {
+  if (!fn) {
+    return fn;
+  }
+  if (typeof fn === 'function') {
+    if (fn.name) {
+      return fn.name;
+    }
+    return (fn.toString().trim().match(/^function\s*([^\s(]+)/) || [])[1];
+  } else if (fn.constructor && fn.constructor.name) {
+    return fn.constructor.name;
+  }
+}*/

packages/backend-core/src/context/FunctionContext.js

@@ -1,84 +1,47 @@
-const cls = require("cls-hooked")
+const cls = require("../clshooked")
 const { newid } = require("../hashing")
 
 const REQUEST_ID_KEY = "requestId"
+const MAIN_CTX = cls.createNamespace("main")
 
-class FunctionContext {
-  static getMiddleware(
-    updateCtxFn = null,
-    destroyFn = null,
-    contextName = "session"
-  ) {
-    const namespace = this.createNamespace(contextName)
-
-    return async function (ctx, next) {
-      await new Promise(
-        namespace.bind(function (resolve, reject) {
-          // store a contextual request ID that can be used anywhere (audit logs)
-          namespace.set(REQUEST_ID_KEY, newid())
-          namespace.bindEmitter(ctx.req)
-          namespace.bindEmitter(ctx.res)
-
-          if (updateCtxFn) {
-            updateCtxFn(ctx)
-          }
-          next()
-            .then(resolve)
-            .catch(reject)
-            .finally(() => {
-              if (destroyFn) {
-                return destroyFn(ctx)
-              }
-            })
-        })
-      )
-    }
-  }
-
-  static run(callback, contextName = "session") {
-    const namespace = this.createNamespace(contextName)
-
-    return namespace.runAndReturn(callback)
-  }
-
-  static setOnContext(key, value, contextName = "session") {
-    const namespace = this.createNamespace(contextName)
-    namespace.set(key, value)
-  }
-
-  static getContextStorage() {
-    if (this._namespace && this._namespace.active) {
-      let contextData = this._namespace.active
+function getContextStorage(namespace) {
+  if (namespace && namespace.active) {
+    let contextData = namespace.active
     delete contextData.id
     delete contextData._ns_name
     return contextData
   }
-
   return {}
+}
+
+class FunctionContext {
+  static run(callback) {
+    return MAIN_CTX.runAndReturn(async () => {
+      const namespaceId = newid()
+      MAIN_CTX.set(REQUEST_ID_KEY, namespaceId)
+      const namespace = cls.createNamespace(namespaceId)
+      let response = await namespace.runAndReturn(callback)
+      cls.destroyNamespace(namespaceId)
+      return response
+    })
+  }
+
+  static setOnContext(key, value) {
+    const namespaceId = MAIN_CTX.get(REQUEST_ID_KEY)
+    const namespace = cls.getNamespace(namespaceId)
+    namespace.set(key, value)
   }
 
   static getFromContext(key) {
-    const context = this.getContextStorage()
+    const namespaceId = MAIN_CTX.get(REQUEST_ID_KEY)
+    const namespace = cls.getNamespace(namespaceId)
+    const context = getContextStorage(namespace)
     if (context) {
       return context[key]
     } else {
       return null
     }
   }
-
-  static destroyNamespace(name = "session") {
-    if (this._namespace) {
-      cls.destroyNamespace(name)
-      this._namespace = null
-    }
-  }
-
-  static createNamespace(name = "session") {
-    if (!this._namespace) {
-      this._namespace = cls.createNamespace(name)
-    }
-    return this._namespace
-  }
 }
 
 module.exports = FunctionContext

packages/backend-core/src/context/index.js

@@ -55,6 +55,15 @@ async function closeAppDBs() {
   }
 }
 
+exports.closeTenancy = async () => {
+  if (env.USE_COUCH) {
+    await closeDB(exports.getGlobalDB())
+  }
+  // clear from context now that database is closed/task is finished
+  cls.setOnContext(ContextKeys.TENANT_ID, null)
+  cls.setOnContext(ContextKeys.GLOBAL_DB, null)
+}
+
 exports.isDefaultTenant = () => {
   return exports.getTenantId() === exports.DEFAULT_TENANT_ID
 }
@@ -82,12 +91,7 @@ exports.doInTenant = (tenantId, task) => {
     } finally {
       const using = cls.getFromContext(ContextKeys.IN_USE)
       if (!using || using <= 1) {
-        if (env.USE_COUCH) {
-          await closeDB(exports.getGlobalDB())
-        }
-        // clear from context now that database is closed/task is finished
-        cls.setOnContext(ContextKeys.TENANT_ID, null)
-        cls.setOnContext(ContextKeys.GLOBAL_DB, null)
+        await exports.closeTenancy()
       } else {
         cls.setOnContext(using - 1)
       }

packages/backend-core/src/middleware/tenancy.js

@@ -1,6 +1,5 @@
-const { setTenantId, setGlobalDB, getGlobalDB } = require("../tenancy")
-const { closeDB } = require("../db")
-const ContextFactory = require("../context/FunctionContext")
+const { setTenantId, setGlobalDB, closeTenancy } = require("../tenancy")
+const cls = require("../context/FunctionContext")
 const { buildMatcherRegex, matches } = require("./matchers")
 
 module.exports = (
@@ -11,17 +10,16 @@ module.exports = (
   const allowQsOptions = buildMatcherRegex(allowQueryStringPatterns)
   const noTenancyOptions = buildMatcherRegex(noTenancyPatterns)
 
-  const updateCtxFn = ctx => {
+  return async function (ctx, next) {
+    return cls.run(async () => {
       const allowNoTenant =
         opts.noTenancyRequired || !!matches(ctx, noTenancyOptions)
       const allowQs = !!matches(ctx, allowQsOptions)
       const tenantId = setTenantId(ctx, { allowQs, allowNoTenant })
       setGlobalDB(tenantId)
+      const res = await next()
+      await closeTenancy()
+      return res
+    })
   }
-  const destroyFn = async () => {
-    const db = getGlobalDB()
-    await closeDB(db)
-  }
-
-  return ContextFactory.getMiddleware(updateCtxFn, destroyFn)
 }

packages/backend-core/yarn.lock

@@ -1533,7 +1533,7 @@ electron-to-chromium@^1.3.896:
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.900.tgz#5be2c5818a2a012c511b4b43e87b6ab7a296d4f5"
   integrity sha512-SuXbQD8D4EjsaBaJJxySHbC+zq8JrFfxtb4GIr4E9n1BcROyMcRrJCYQNpJ9N+Wjf5mFp7Wp0OHykd14JNEzzQ==
 
-emitter-listener@^1.0.1:
+emitter-listener@^1.0.1, emitter-listener@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/emitter-listener/-/emitter-listener-1.1.2.tgz#56b140e8f6992375b3d7cb2cab1cc7432d9632e8"
   integrity sha512-Bt1sBAGFHY9DKY+4/2cV6izcKJUf5T7/gkdmkxzX/qv9CcGH8xSwVRW5mtX03SWJtRTWSOpzCuWN9rBFYZepZQ==

packages/bbui/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@budibase/bbui",
   "description": "A UI solution used in the different Budibase projects.",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "license": "MPL-2.0",
   "svelte": "src/index.js",
   "module": "dist/bbui.es.js",
@@ -38,7 +38,7 @@
   ],
   "dependencies": {
     "@adobe/spectrum-css-workflow-icons": "^1.2.1",
-    "@budibase/string-templates": "^1.0.149",
+    "@budibase/string-templates": "^1.0.151",
     "@spectrum-css/actionbutton": "^1.0.1",
     "@spectrum-css/actiongroup": "^1.0.1",
     "@spectrum-css/avatar": "^3.0.2",

packages/builder/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@budibase/builder",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "license": "GPL-3.0",
   "private": true,
   "scripts": {
@@ -67,10 +67,10 @@
     }
   },
   "dependencies": {
-    "@budibase/bbui": "^1.0.149",
-    "@budibase/client": "^1.0.149",
-    "@budibase/frontend-core": "^1.0.149",
-    "@budibase/string-templates": "^1.0.149",
+    "@budibase/bbui": "^1.0.151",
+    "@budibase/client": "^1.0.151",
+    "@budibase/frontend-core": "^1.0.151",
+    "@budibase/string-templates": "^1.0.151",
     "@sentry/browser": "5.19.1",
     "@spectrum-css/page": "^3.0.1",
     "@spectrum-css/vars": "^3.0.1",

packages/builder/src/pages/builder/app/[application]/data/datasource/[selectedDatasource]/_components/DynamicVariableModal.svelte

@@ -1,5 +1,8 @@
 <script>
   import { Input, ModalContent, Modal, Body } from "@budibase/bbui"
+  import { createEventDispatcher } from "svelte"
+
+  const dispatch = createEventDispatcher()
 
   export let dynamicVariables
   export let datasource
@@ -35,6 +38,7 @@
     name = null
     binding = null
     dynamicVariables[copiedName] = copiedBinding
+    dispatch("change", dynamicVariables)
   }
 </script>
 

packages/builder/src/pages/builder/app/[application]/data/datasource/[selectedDatasource]/rest/[query]/index.svelte

@@ -37,7 +37,7 @@
   import AccessLevelSelect from "components/integration/AccessLevelSelect.svelte"
   import DynamicVariableModal from "../../_components/DynamicVariableModal.svelte"
   import Placeholder from "assets/bb-spaceship.svg"
-  import { cloneDeep } from "lodash/fp"
+  import { cloneDeep, isEqual } from "lodash/fp"
   import { RawRestBodyTypes } from "constants/backend"
 
   let query, datasource
@@ -47,6 +47,7 @@
   let response, schema, enabledHeaders
   let authConfigId
   let dynamicVariables, addVariableModal, varBinding
+  let baseQuery, baseDatasource, baseVariables
 
   $: datasourceType = datasource?.source
   $: integrationInfo = $integrations[datasourceType]
@@ -62,6 +63,15 @@
   $: hasSchema =
     Object.keys(schema || {}).length !== 0 ||
     Object.keys(query?.schema || {}).length !== 0
+  $: baseQuery = !baseQuery ? cloneDeep(query) : baseQuery
+  $: baseDatasource = !baseDatasource ? cloneDeep(datasource) : baseDatasource
+  $: baseVariables = !baseVariables
+    ? cloneDeep(dynamicVariables)
+    : baseVariables
+  $: hasChanged =
+    !isEqual(baseQuery, query) ||
+    !isEqual(baseDatasource, datasource) ||
+    !isEqual(baseVariables, dynamicVariables)
 
   function getSelectedQuery() {
     return cloneDeep(
@@ -120,6 +130,9 @@
         datasource.config.dynamicVariables = rebuildVariables(saveId)
         datasource = await datasources.save(datasource)
       }
+      baseQuery = query
+      baseDatasource = datasource
+      baseVariables = dynamicVariables
     } catch (err) {
       notifications.error(`Error saving query`)
     }
@@ -299,6 +312,7 @@
   {dynamicVariables}
   bind:binding={varBinding}
   bind:this={addVariableModal}
+  on:change={saveQuery}
 />
 {#if query && queryConfig}
   <div class="inner">
@@ -332,7 +346,7 @@
           </div>
           <Button primary disabled={!url} on:click={runQuery}>Send</Button>
           <Button
-            disabled={!query.name}
+            disabled={!query.name || !hasChanged}
             cta
             on:click={saveQuery}
             tooltip={!hasSchema

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@budibase/cli",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Budibase CLI, for developers, self hosting and migrations.",
   "main": "src/index.js",
   "bin": {

packages/client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@budibase/client",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "license": "MPL-2.0",
   "module": "dist/budibase-client.js",
   "main": "dist/budibase-client.js",
@@ -19,9 +19,9 @@
     "dev:builder": "rollup -cw"
   },
   "dependencies": {
-    "@budibase/bbui": "^1.0.149",
-    "@budibase/frontend-core": "^1.0.149",
-    "@budibase/string-templates": "^1.0.149",
+    "@budibase/bbui": "^1.0.151",
+    "@budibase/frontend-core": "^1.0.151",
+    "@budibase/string-templates": "^1.0.151",
     "@spectrum-css/button": "^3.0.3",
     "@spectrum-css/card": "^3.0.3",
     "@spectrum-css/divider": "^1.0.3",

packages/frontend-core/package.json

@@ -1,12 +1,12 @@
 {
   "name": "@budibase/frontend-core",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Budibase frontend core libraries used in builder and client",
   "author": "Budibase",
   "license": "MPL-2.0",
   "svelte": "src/index.js",
   "dependencies": {
-    "@budibase/bbui": "^1.0.149",
+    "@budibase/bbui": "^1.0.151",
     "lodash": "^4.17.21",
     "svelte": "^3.46.2"
   }

packages/server/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@budibase/server",
   "email": "hi@budibase.com",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Budibase Web Server",
   "main": "src/index.ts",
   "repository": {
@@ -10,6 +10,7 @@
   },
   "scripts": {
     "build": "rimraf dist/ && tsc -p tsconfig.build.json && mv dist/src/* dist/ && rimraf dist/src/ && yarn postbuild",
+    "debug": "yarn build && node --expose-gc --inspect=9222 dist/index.js",
     "postbuild": "copyfiles -u 1 src/**/*.svelte dist/ && copyfiles -u 1 src/**/*.hbs dist/ && copyfiles -u 1 src/**/*.json dist/",
     "test": "jest --coverage --maxWorkers=2",
     "test:watch": "jest --watch",
@@ -68,10 +69,10 @@
   "license": "GPL-3.0",
   "dependencies": {
     "@apidevtools/swagger-parser": "^10.0.3",
-    "@budibase/backend-core": "^1.0.149",
-    "@budibase/client": "^1.0.149",
-    "@budibase/pro": "1.0.149",
-    "@budibase/string-templates": "^1.0.149",
+    "@budibase/backend-core": "^1.0.151",
+    "@budibase/client": "^1.0.151",
+    "@budibase/pro": "1.0.151",
+    "@budibase/string-templates": "^1.0.151",
     "@bull-board/api": "^3.7.0",
     "@bull-board/koa": "^3.7.0",
     "@elastic/elasticsearch": "7.10.0",

packages/server/src/integrations/base/sql.ts

@@ -21,6 +21,31 @@ type KnexQuery = Knex.QueryBuilder | Knex
 const MIN_ISO_DATE = "0000-00-00T00:00:00.000Z"
 const MAX_ISO_DATE = "9999-00-00T00:00:00.000Z"
 
+function likeKey(client: string, key: string): string {
+  if (!key.includes(" ")) {
+    return key
+  }
+  let start: string, end: string
+  switch (client) {
+    case SqlClients.MY_SQL:
+      start = end = "`"
+      break
+    case SqlClients.ORACLE:
+    case SqlClients.POSTGRES:
+      start = end = '"'
+      break
+    case SqlClients.MS_SQL:
+      start = "["
+      end = "]"
+      break
+    default:
+      throw "Unknown client"
+  }
+  const parts = key.split(".")
+  key = parts.map(part => `${start}${part}${end}`).join(".")
+  return key
+}
+
 function parse(input: any) {
   if (Array.isArray(input)) {
     return JSON.stringify(input)
@@ -125,7 +150,9 @@ class InternalBuilder {
         } else {
           const rawFnc = `${fnc}Raw`
           // @ts-ignore
-          query = query[rawFnc](`LOWER(${key}) LIKE ?`, [`%${value}%`])
+          query = query[rawFnc](`LOWER(${likeKey(this.client, key)}) LIKE ?`, [
+            `%${value}%`,
+          ])
         }
       })
     }

packages/server/src/integrations/postgres.ts

@@ -147,7 +147,7 @@ module PostgresModule {
       return parts.join(" || ")
     }
 
-    async internalQuery(query: SqlQuery) {
+    async internalQuery(query: SqlQuery, close: boolean = true) {
       const client = this.client
       this.index = 1
       // need to handle a specific issue with json data types in postgres,
@@ -164,10 +164,11 @@ module PostgresModule {
       try {
         return await client.query(query.sql, query.bindings || [])
       } catch (err) {
+        await this.client.end()
         // @ts-ignore
         throw new Error(err)
       } finally {
-        await this.client.end()
+        if (close) await this.client.end()
       }
     }
 
@@ -204,11 +205,11 @@ module PostgresModule {
         }
       } catch (err) {
         tableKeys = {}
-      } finally {
-        await this.client.close()
       }
 
+      try {
         const columnsResponse = await this.client.query(this.COLUMNS_SQL)
+
         const tables: { [key: string]: Table } = {}
 
         for (let column of columnsResponse.rows) {
@@ -246,6 +247,12 @@ module PostgresModule {
         const final = finaliseExternalTables(tables, entities)
         this.tables = final.tables
         this.schemaErrors = final.errors
+      } catch (err) {
+        // @ts-ignore
+        throw new Error(err)
+      } finally {
+        await this.client.end()
+      }
     }
 
     async create(query: SqlQuery | string) {
@@ -274,8 +281,9 @@ module PostgresModule {
       if (Array.isArray(input)) {
         const responses = []
         for (let query of input) {
-          responses.push(await this.internalQuery(query))
+          responses.push(await this.internalQuery(query, false))
         }
+        await this.client.end()
         return responses
       } else {
         const response = await this.internalQuery(input)

packages/string-templates/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@budibase/string-templates",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Handlebars wrapper for Budibase templating.",
   "main": "src/index.cjs",
   "module": "dist/bundle.mjs",

packages/string-templates/src/helpers/index.js

@@ -13,6 +13,16 @@ const HTML_SWAPS = {
   ">": ">",
 }
 
+function isObject(value) {
+  if (value == null || typeof value !== "object") {
+    return false
+  }
+  return (
+    value.toString() === "[object Object]" ||
+    (value.length > 0 && typeof value[0] === "object")
+  )
+}
+
 const HELPERS = [
   // external helpers
   new Helper(HelperFunctionNames.OBJECT, value => {
@@ -22,11 +32,7 @@ const HELPERS = [
   new Helper(HelperFunctionNames.JS, processJS, false),
   // this help is applied to all statements
   new Helper(HelperFunctionNames.ALL, (value, { __opts }) => {
-    if (
-      value != null &&
-      typeof value === "object" &&
-      value.toString() === "[object Object]"
-    ) {
+    if (isObject(value)) {
       return new SafeString(JSON.stringify(value))
     }
     // null/undefined values produce bad results

packages/string-templates/src/processors/preprocessor.js

@@ -64,9 +64,10 @@ module.exports.processors = [
         return statement
       }
     }
+    const testHelper = possibleHelper.trim().toLowerCase()
     if (
       !noHelpers &&
-      HelperNames().some(option => option.includes(possibleHelper))
+      HelperNames().some(option => testHelper === option.toLowerCase())
     ) {
       insideStatement = `(${insideStatement})`
     }

packages/string-templates/test/basic.spec.js

@@ -106,6 +106,16 @@ describe("Test that the object processing works correctly", () => {
   })
 })
 
+describe("check returning objects", () => {
+  it("should handle an array of objects", async () => {
+    const json = [{a: 1},{a: 2}]
+    const output = await processString("{{ testing }}", {
+      testing: json
+    })
+    expect(output).toEqual(JSON.stringify(json))
+  })
+})
+
 describe("check the utility functions", () => {
   it("should return false for an invalid template string", () => {
     const valid = isValid("{{ table1.thing prop }}")

packages/string-templates/test/escapes.spec.js

@@ -30,6 +30,11 @@ describe("Handling context properties with spaces in their name", () => {
     })
     expect(output).toBe("testcase 1")
   })
+
+  it("should allow the use of a", async () => {
+    const output = await processString("{{ a }}", { a: 1 })
+    expect(output).toEqual("1")
+  })
 })
 
 describe("attempt some complex problems", () => {

packages/worker/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@budibase/worker",
   "email": "hi@budibase.com",
-  "version": "1.0.149",
+  "version": "1.0.151",
   "description": "Budibase background service",
   "main": "src/index.ts",
   "repository": {
@@ -31,9 +31,9 @@
   "author": "Budibase",
   "license": "GPL-3.0",
   "dependencies": {
-    "@budibase/backend-core": "^1.0.149",
-    "@budibase/pro": "1.0.149",
-    "@budibase/string-templates": "^1.0.149",
+    "@budibase/backend-core": "^1.0.151",
+    "@budibase/pro": "1.0.151",
+    "@budibase/string-templates": "^1.0.151",
     "@koa/router": "^8.0.0",
     "@sentry/node": "6.17.7",
     "@techpass/passport-openidconnect": "^0.3.0",