Find Row with PostgreSQL API on New Created or Updated Event (Instant) from Google Calendar API

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New Created or Updated Event (Instant) from the Google Calendar API

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Find Row with the PostgreSQL API

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Getting Started#

This integration creates a workflow with a Google Calendar trigger and PostgreSQL action. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

Select this integration
Configure the New Created or Updated Event (Instant) trigger
1. Connect your Google Calendar account
2. Optional- Select one or more Calendars
3. Optional- Configure Emit only for new events
4. Configure Push notification renewal schedule
Configure the Find Row action
1. Connect your PostgreSQL account
2. Select a Schema
3. Select a Table
4. Select a Lookup Column
5. Select a Lookup Value
Deploy the workflow
Send a test event to validate your setup
Turn on the trigger

Details#

This integration uses pre-built, source-available components from Pipedream's GitHub repo. These components are developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

Trigger#

New Created or Updated Event (Instant) on Google Calendar

Description:Emit new event when a Google Calendar events is created or updated (does not emit cancelled events)

Version:0.1.13

Key:google_calendar-new-or-updated-event-instant

View on GitHub

Google Calendar Overview#

The Google Calendar API lets you dip into the powerhouse of scheduling, allowing for the reading, creation, and manipulation of events and calendars directly from your applications. Through Pipedream, you can seamlessly integrate Google Calendar into a myriad of workflows, automating event management, syncing with other services, setting up custom reminders, or even collating data for reporting. The key here is to streamline your calendar-related processes, ensuring that your time management is as efficient and automated as possible.

Trigger Code#

import { v4 as uuid } from "uuid";
import sampleEmit from "./test-event.mjs";
import googleCalendar from "../../google_calendar.app.mjs";
import { DEFAULT_POLLING_SOURCE_TIMER_INTERVAL } from "@pipedream/platform";

export default {
  key: "google_calendar-new-or-updated-event-instant",
  type: "source",
  name: "New Created or Updated Event (Instant)",
  description: "Emit new event when a Google Calendar events is created or updated (does not emit cancelled events)",
  version: "0.1.13",
  dedupe: "unique",
  props: {
    googleCalendar,
    db: "$.service.db",
    calendarIds: {
      propDefinition: [
        googleCalendar,
        "calendarId",
      ],
      type: "string[]",
      default: [
        "primary",
      ],
      label: "Calendars",
      description: "Select one or more calendars to watch (defaults to the primary calendar)",
    },
    newOnly: {
      label: "Emit only for new events",
      type: "boolean",
      description: "Emit new events only, and not updates to existing events (defaults to `false`)",
      optional: true,
      default: false,
    },
    http: "$.interface.http",
    timer: {
      label: "Push notification renewal schedule",
      description: "The Google Calendar API requires occasional renewal of push notification subscriptions. **This runs in the background, so you should not need to modify this schedule**.",
      type: "$.interface.timer",
      static: {
        intervalSeconds: DEFAULT_POLLING_SOURCE_TIMER_INTERVAL,
      },
    },
  },
  hooks: {
    async deploy() {
      const events = [];
      const params = {
        maxResults: 25,
        orderBy: "updated",
      };
      for (const calendarId of this.calendarIds) {
        params.calendarId = calendarId;
        const { items } = await this.googleCalendar.listEvents(params);
        events.push(...items);
      }
      events.sort((a, b) => (Date.parse(a.updated) > Date.parse(b.updated))
        ? 1
        : -1);
      for (const event of events.slice(-25)) {
        const meta = this.generateMeta(event);
        this.$emit(event, meta);
      }
    },
    async activate() {
      await this.makeWatchRequest();
    },
    async deactivate() {
      await this.stopWatchRequest();
    },
  },
  methods: {
    setNextSyncToken(calendarId, nextSyncToken) {
      this.db.set(`${calendarId}.nextSyncToken`, nextSyncToken);
    },
    getNextSyncToken(calendarId) {
      return this.db.get(`${calendarId}.nextSyncToken`);
    },
    setChannelId(calendarId, channelId) {
      this.db.set(`${calendarId}.channelId`, channelId);
    },
    getChannelId(calendarId) {
      return this.db.get(`${calendarId}.channelId`);
    },
    setResourceId(calendarId, resourceId) {
      this.db.set(`${calendarId}.resourceId`, resourceId);
    },
    getResourceId(calendarId) {
      return this.db.get(`${calendarId}.resourceId`);
    },
    setExpiration(calendarId, expiration) {
      this.db.set(`${calendarId}.expiration`, expiration);
    },
    getExpiration(calendarId) {
      return this.db.get(`${calendarId}.expiration`);
    },
    /**
     * A utility method to compute whether the provided event is newly created
     * or not. Since the Google Calendar API does not provide a specific way to
     * determine this, this method estimates the result based on the `created`
     * and `updated` timestamps: if they are more than 2 seconds apart, then we
     * assume that the event is not new.
     *
     * @param {Object} event - The calendar event being processed
     * @returns {Boolean} True if the input event is a newly created event, or
     * false otherwise
     */
    _isNewEvent(event) {
      const {
        created,
        updated,
      } = event;
      const createdTimestampMilliseconds = Date.parse(created);
      const updatedTimestampMilliseconds = Date.parse(updated);
      const diffMilliseconds = Math.abs(
        updatedTimestampMilliseconds - createdTimestampMilliseconds,
      );
      const maxDiffMilliseconds = 2000;
      return diffMilliseconds <= maxDiffMilliseconds;
    },
    /**
     * A utility method to compute whether the provided event is relevant to the
     * event source (and as a consequence must be processed) or not.
     *
     * @param {Object} event - The calendar event being processed
     * @returns {Boolean} True if the input event must be processed, or false
     * otherwise (i.e. if the event must be skipped)
     */
    isEventRelevant(event) {
      return !this.newOnly || this._isNewEvent(event);
    },
    generateMeta(event) {
      const {
        id,
        summary,
        updated: tsString,
      } = event;
      const ts = Date.parse(tsString);
      return {
        id: `${id}-${ts}`,
        summary,
        ts,
      };
    },
    async makeWatchRequest() {
      // Make watch request for this HTTP endpoint
      for (const calendarId of this.calendarIds) {
        const watchResp =
          await this.googleCalendar.watchEvents({
            calendarId,
            requestBody: {
              id: uuid(),
              type: "web_hook",
              address: this.http.endpoint,
            },
          });

        // Initial full sync. Get next sync token
        const nextSyncToken = await this.googleCalendar.fullSync(calendarId);

        this.setNextSyncToken(calendarId, nextSyncToken);
        this.setChannelId(calendarId, watchResp.id);
        this.setResourceId(calendarId, watchResp.resourceId);
        this.setExpiration(calendarId, watchResp.expiration);
      }
    },
    async stopWatchRequest() {
      for (const calendarId of this.calendarIds) {
        const id = this.getChannelId(calendarId);
        const resourceId = this.getResourceId(calendarId);
        if (id && resourceId) {
          const { status } =
            await this.googleCalendar.stopChannel({
              returnOnlyData: false,
              requestBody: {
                id,
                resourceId,
              },
            });
          if (status === 204) {
            console.log("webhook deactivated");
            this.setNextSyncToken(calendarId, null);
            this.setChannelId(calendarId, null);
            this.setResourceId(calendarId, null);
            this.setExpiration(calendarId, null);
          } else {
            console.log("There was a problem deactivating the webhook");
          }
        }
      }
    },
    getSoonestExpirationDate() {
      let min;
      for (const calendarId of this.calendarIds) {
        const expiration = parseInt(this.db.get(`${calendarId}.expiration`));
        if (!min || expiration < min) {
          min = expiration;
        }
      }
      return new Date(min);
    },
    getChannelIds() {
      const channelIds = [];
      for (const calendarId of this.calendarIds) {
        const channelId = this.db.get(`${calendarId}.channelId`);
        channelIds.push(channelId);
      }
      return channelIds;
    },
  },
  async run(event) {
    // refresh watch
    if (event.interval_seconds) {
      // get time
      const now = new Date();
      const intervalMs = event.interval_seconds * 1000;
      // get expiration
      const expireDate = this.getSoonestExpirationDate();

      // if now + interval > expiration, refresh watch
      if (now.getTime() + intervalMs > expireDate.getTime()) {
        await this.stopWatchRequest();
        await this.makeWatchRequest();
      }
    } else {
      // Verify channel ID
      const channelIds = this.getChannelIds();
      const incomingChannelId = event?.headers?.["x-goog-channel-id"];
      if (!channelIds.includes(incomingChannelId)) {
        console.log(
          `Unexpected channel ID ${incomingChannelId}. This likely means there are multiple, older subscriptions active.`,
        );
        return;
      }

      // Check that resource state === exists
      const state = event?.headers?.["x-goog-resource-state"];
      switch (state) {
      case "exists":
        // there's something to emit, so keep going
        break;
      case "not_exists":
        console.log("Resource does not exist. Exiting.");
        return;
      case "sync":
        console.log("New channel created");
        return;
      default:
        console.log(`Unknown state: ${state}`);
        return;
      }
    }

    // Fetch and emit events
    for (const calendarId of this.calendarIds) {
      const syncToken = this.getNextSyncToken(calendarId);
      let nextSyncToken = null;
      let nextPageToken = null;
      while (!nextSyncToken) {
        const {
          data: syncData = {},
          status: syncStatus,
        } = await this.googleCalendar.listEvents({
          returnOnlyData: false,
          calendarId,
          syncToken,
          pageToken: nextPageToken,
          maxResults: 2500,
        });
        if (syncStatus === 410) {
          console.log("Sync token invalid, resyncing");
          nextSyncToken = await this.googleCalendar.fullSync(this.calendarId);
          break;
        }
        nextPageToken = syncData.nextPageToken;
        nextSyncToken = syncData.nextSyncToken;

        const { items: events = [] } = syncData;
        events
          .filter(this.isEventRelevant, this)
          .forEach((event) => {
            const { status } = event;
            if (status === "cancelled") {
              console.log("Event cancelled. Exiting.");
              return;
            }
            const meta = this.generateMeta(event);
            this.$emit(event, meta);
          });
      }

      this.setNextSyncToken(calendarId, nextSyncToken);
    }
  },
  sampleEmit,
};

Trigger Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.

Label	Prop	Type	Description
Google Calendar	`googleCalendar`	`app`	This component uses the Google Calendar app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
Calendars	`calendarIds`	`string[]`	Select a value from the drop down menu.
Emit only for new events	`newOnly`	`boolean`	Emit new events only, and not updates to existing events (defaults to `false`)
N/A	`http`	`$.interface.http`	This component uses `$.interface.http` to generate a unique URL when the component is first instantiated. Each request to the URL will trigger the `run()` method of the component.
Push notification renewal schedule	`timer`	`$.interface.timer`	The Google Calendar API requires occasional renewal of push notification subscriptions. This runs in the background, so you should not need to modify this schedule.

Trigger Authentication#

Google Calendar uses OAuth authentication. When you connect your Google Calendar account, Pipedream will open a popup window where you can sign into Google Calendar and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Google Calendar API.

Pipedream requests the following authorization scopes when you connect your account:

https://www.googleapis.com/auth/calendar.eventshttps://www.googleapis.com/auth/calendar.readonlyhttps://www.googleapis.com/auth/calendar.settings.readonly

About Google Calendar#

With Google Calendar, you can quickly schedule meetings and events and get reminders about upcoming activities, so you always know what’s next.

Action#

Find Row on PostgreSQL

Description:Finds a row in a table via a lookup column. [See the documentation](https://node-postgres.com/features/queries)

Version:2.0.6

Key:postgresql-find-row

View on GitHub

PostgreSQL Overview#

On Pipedream, you can leverage the PostgreSQL app to create workflows that automate database operations, synchronize data across platforms, and react to database events in real-time. Think handling new row entries, updating records from webhooks, or even compiling reports on a set schedule. Pipedream's serverless platform provides a powerful way to connect PostgreSQL with a variety of apps, enabling you to create tailored automation that fits your specific needs.

Action Code#

import postgresql from "../../postgresql.app.mjs";

export default {
  name: "Find Row",
  key: "postgresql-find-row",
  description: "Finds a row in a table via a lookup column. [See the documentation](https://node-postgres.com/features/queries)",
  version: "2.0.6",
  type: "action",
  props: {
    postgresql,
    schema: {
      propDefinition: [
        postgresql,
        "schema",
      ],
    },
    table: {
      propDefinition: [
        postgresql,
        "table",
        (c) => ({
          schema: c.schema,
        }),
      ],
    },
    column: {
      propDefinition: [
        postgresql,
        "column",
        (c) => ({
          table: c.table,
          schema: c.schema,
        }),
      ],
      label: "Lookup Column",
      description: "Find row by searching for a value in this column. Returns first row found",
    },
    value: {
      propDefinition: [
        postgresql,
        "value",
        (c) => ({
          table: c.table,
          column: c.column,
          schema: c.schema,
        }),
      ],
    },
  },
  async run({ $ }) {
    const {
      schema,
      table,
      column,
      value,
    } = this;
    try {
      const res = await this.postgresql.findRowByValue(
        schema,
        table,
        column,
        value,
      );
      const summary = res
        ? "Row found"
        : "Row not found";
      $.export("$summary", summary);
      return res;
    } catch (error) {
      let errorMsg = "Row not retrieved due to an error. ";
      errorMsg += `${error}`.includes("SSL verification failed")
        ? "This could be because SSL verification failed. To resolve this, reconnect your account and set SSL Verification Mode: Skip Verification, and try again."
        : `${error}`;
      throw new Error(errorMsg);
    }
  },
};

Action Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI.

Label	Prop	Type	Description
PostgreSQL	`postgresql`	`app`	This component uses the PostgreSQL app.
Schema	`schema`	`string`	Select a value from the drop down menu.
Table	`table`	`string`	Select a value from the drop down menu.
Lookup Column	`column`	`string`	Select a value from the drop down menu.
Lookup Value	`value`	`string`	Select a value from the drop down menu.

Action Authentication#

PostgreSQL uses API keys for authentication. When you connect your PostgreSQL account, Pipedream securely stores the keys so you can easily authenticate to PostgreSQL APIs in both code and no-code steps.

Connecting to Restricted Databases

Either enable the shared static IP for this account below, or configure a VPC to deploy any workflow in your workspace to a private network with a dedicated static IP. Learn more in our docs.

SSL Setup

Configure SSL on your PostgreSQL database by providing the CA (Certificate Authority), and choosing between Full Verification, Verify Certificate Authority (CA), or Skip Verification. Skipping verification is not recommended as this has serious security implications.