← Google Calendar + Bash integrations

Run Bash Code with Bash 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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Run Bash Code with the Bash API
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Getting Started

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

  1. Select this integration
  2. 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
  3. Configure the Run Bash Code action
    1. Connect your Bash account
  4. Deploy the workflow
  5. Send a test event to validate your setup
  6. 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

Description:Emit new event when a Google Calendar events is created or updated (does not emit cancelled events)
Version:0.1.11
Key:google_calendar-new-or-updated-event-instant

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: "0.1.11",
  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,
        });
        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.
LabelPropTypeDescription
Google CalendargoogleCalendarappThis component uses the Google Calendar app.
N/Adb$.service.dbThis component uses $.service.db to maintain state between executions.
CalendarscalendarIdsstring[]Select a value from the drop down menu.
Emit only for new eventsnewOnlyboolean

Emit new events only, and not updates to existing events (defaults to false)

N/Ahttp$.interface.httpThis component uses $.interface.http to generate a unique URL when the component is first instantiated. Each request to the URL will trigger the run() method of the component.
Push notification renewal scheduletimer$.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:

emailprofilehttps://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

Description:Run any Bash in a Pipedream step within your workflow. Refer to the [Pipedream Bash docs](https://pipedream.com/docs/code/bash) to learn more.
Version:0.0.2
Key:bash-run-bash-code

Action Code

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

export default {
  name: "Run Bash Code",
  version: "0.0.2",
  key: "bash-run-bash-code",
  description: "Run any Bash in a Pipedream step within your workflow. Refer to the [Pipedream Bash docs](https://pipedream.com/docs/code/bash) to learn more.",
  props: {
    bash,
  },
  type: "action",
  methods: {},
  async run({ $ }) {
    // Placeholder action for Bash code app
  },
};

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.

LabelPropTypeDescription
BashbashappThis component uses the Bash app.

Action Authentication

The Bash API does not require authentication.

About Bash

Run any Bash in a Pipedream step within your workflow, including making curl requests.

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