Scrape URL CSS Selectors with ZenRows API on New DynamoDB Stream Event from AWS API

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New DynamoDB Stream Event from the AWS API

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Scrape URL CSS Selectors with the ZenRows API

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Getting Started#

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

Select this integration
Configure the New DynamoDB Stream Event trigger
1. Connect your AWS account
2. Configure timer
3. Select a AWS Region
4. Select a Stream
Configure the Scrape URL CSS Selectors action
1. Connect your ZenRows account
2. Configure URL
3. Configure CSS Selectors
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 DynamoDB Stream Event on AWS

Description:Emit new event when a DynamoDB stream receives new events. [See the docs here](https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_streams_GetRecords.html)

Version:0.0.2

Key:aws-new-dynamodb-stream-event

View on GitHub

AWS Overview#

The AWS API unlocks endless possibilities for automation with Pipedream. With this powerful combo, you can manage your AWS services and resources, automate deployment workflows, process data, and react to events across your AWS infrastructure. Pipedream offers a serverless platform for creating workflows triggered by various events that can execute AWS SDK functions, making it an efficient tool to integrate, automate, and orchestrate tasks across AWS services and other apps.

Trigger Code#

import common from "../../common/common-dynamodb-streams.mjs";

export default {
  ...common,
  key: "aws-new-dynamodb-stream-event",
  name: "New DynamoDB Stream Event",
  description: "Emit new event when a DynamoDB stream receives new events. [See the docs here](https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_streams_GetRecords.html)",
  type: "source",
  version: "0.0.2",
  dedupe: "unique",
  props: {
    ...common.props,
    stream: {
      type: "string",
      label: "Stream",
      description: "ARN of the Stream to watch for new events",
      async options({ prevContext }) {
        const {
          streams,
          lastEvaluatedStreamArn,
        } = await this.listEnabledStreams({
          ExclusiveStartStreamArn: prevContext.lastEvaluatedStreamArn,
        });
        const options = streams.map((stream) => ({
          label: `${stream.TableName} - Created ${stream.StreamLabel}`,
          value: stream.StreamArn,
        }));
        return {
          options,
          context: {
            lastEvaluatedStreamArn,
          },
        };
      },
    },
  },
  hooks: {
    async deploy() {
      const { StreamDescription: streamDescription } = await this.listShards({
        StreamArn: this.stream,
      });
      const shardId = streamDescription.Shards[streamDescription.Shards.length - 1].ShardId;
      const { ShardIterator: shardIterator } = await this.getShardIterator({
        ShardId: shardId,
        StreamArn: this.stream,
        ShardIteratorType: "LATEST",
      });
      this._setShardIterator(shardIterator);
    },
  },
  methods: {
    ...common.methods,
    _getShardIterator() {
      return this.db.get("shardIterator");
    },
    _setShardIterator(shardIterator) {
      this.db.set("shardIterator", shardIterator);
    },
    generateMeta({
      eventID, eventName, dynamodb,
    }) {
      return {
        id: eventID,
        summary: `New ${eventName} event`,
        ts: Date.parse(dynamodb.ApproximateCreationDateTime),
      };
    },
  },
  async run() {
    if (!(await this.isStreamEnabled(this.stream))) {
      throw new Error("Stream is no longer enabled.");
    }

    const shardIterator = this._getShardIterator();

    const {
      Records: records, NextShardIterator: nextShardIterator,
    } = await this.getRecords({
      ShardIterator: shardIterator,
    });

    for (const record of records) {
      const meta = this.generateMeta(record);
      this.$emit(record, meta);
    }

    this._setShardIterator(nextShardIterator);
  },
};

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
AWS	`aws`	`app`	This component uses the AWS app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
	`timer`	`$.interface.timer`
AWS Region	`region`	`string`	Select a value from the drop down menu.
Stream	`stream`	`string`	Select a value from the drop down menu.

Trigger Authentication#

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

Follow the AWS Instructions for creating an IAM user with an associated access and secret key.

As a best practice, attach the minimum set of IAM permissions necessary to perform the specific task in Pipedream. If your workflow only needs to perform a single API call, you should create a user and associate an IAM group / policy with permission to do only that task. You can create as many linked AWS accounts in Pipedream as you'd like.

Enter your access and secret key below.

About AWS#

Amazon Web Services (AWS) offers reliable, scalable, and inexpensive cloud computing services.

Action#

Scrape URL CSS Selectors on ZenRows

Description:Scrape HTML of the URL with CSS Selectors. [See the documentation](https://www.zenrows.com/docs#css-selectors-curl)

Version:0.0.1

Key:zenrows-scrape-url-css-selectors

View on GitHub

ZenRows Overview#

ZenRows API specializes in web scraping and handles issues like CAPTCHAs, JavaScript rendering, and rotating proxies to ensure successful data extraction. In Pipedream, you can pair the ZenRows API with numerous other services to create automated workflows that respond to events, process and analyze scraped data, or even trigger actions based on the data collected. Whether you need to monitor changes on web pages, aggregate content for analysis, or feed scraped data into other applications, ZenRows' integration on Pipedream simplifies these tasks.

Action Code#

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

export default {
  name: "Scrape URL CSS Selectors",
  version: "0.0.1",
  key: "zenrows-scrape-url-css-selectors",
  description: "Scrape HTML of the URL with CSS Selectors. [See the documentation](https://www.zenrows.com/docs#css-selectors-curl)",
  type: "action",
  props: {
    app,
    url: {
      propDefinition: [
        app,
        "url",
      ],
    },
    cssExtractor: {
      type: "string",
      label: "CSS Selectors",
      description: "CSS Selectors for data extraction. E.g. `{\"links\":\"a @href\", \"images\":\"img @src\"}`",
    },
  },
  async run({ $ }) {
    const response = await this.app.scrapeUrl({
      $,
      params: {
        url: this.url,
        css_extractor: this.cssExtractor,
      },
    });

    if (response) {
      $.export("$summary", `Successfully retrieved HTML from URL \`${this.url}\``);
    }

    return response;
  },
};

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
ZenRows	`app`	`app`	This component uses the ZenRows app.
URL	`url`	`string`	Encoded URL to scrape
CSS Selectors	`cssExtractor`	`string`	CSS Selectors for data extraction. E.g. `{"links":"a @href", "images":"img @src"}`

Action Authentication#

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

About ZenRows#

Web Scraping API & Rotating Proxy Servers. Turn Any Website Into Data with Undetected Scraping Technology 🔥.

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Scrape URL CSS Selectors with ZenRows API on New DynamoDB Stream Event from AWS API

Pipedream makes it easy to connect APIs for ZenRows, AWS and 2,400+ other apps remarkably fast.

Trusted by 1,000,000+ developers from startups to Fortune 500 companies

Developers ♥ Pipedream

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