SpaceCat Shared Utilities

This repository contains a collection of shared utility functions used across various SpaceCat projects. These utilities provide a range of checks and validations, from basic data type validation to more complex checks like ISO date strings and URL validation.

> v1.76.0: Added trace ID propagation support for distributed tracing across SpaceCat services.

Installation

To install the SpaceCat Shared Utilities, you can use npm:

``bash
npm install spacecat-shared-utils
`

Or, if you are using yarn:

`bash
yarn add spacecat-shared-utils
`

Usage

Here's how you can use the different utility functions in your project:

`javascript
import { isBoolean, isValidUrl } from 'spacecat-shared-utils';

console.log(isBoolean('true')); // true
console.log(isValidUrl('https://www.example.com')); // true
`

Functions

The library includes the following utility functions:

- isBoolean(value): Determines if the given value is a boolean or a string representation of a boolean.
- isInteger(value): Checks if the given value is an integer.
- isValidDate(obj): Checks whether the given object is a valid JavaScript Date.
- isIsoDate(str): Validates whether the given string is a JavaScript ISO date string in Zulu (UTC) timezone.
- isIsoTimeOffsetsDate(str): Validates whether the given string is a JavaScript ISO date string following UTC time offsets format.
- isNumber(value): Determines if the given value is a number.
- isObject(obj): Checks if the given parameter is an object and not an array or null.
- isString(str): Determines if the given parameter is a string.
- toBoolean(value): Converts a given value to a boolean. Throws an error if the value is not a boolean.
- arrayEquals(a, b): Compares two arrays for equality.
- isValidUrl(urlString): Validates whether the given string is a valid URL with http or https protocol.
- hasText(str): Checks if the given string is not empty.
- dateAfterDays(number): Calculates the date after a specified number of days from the current date.

Log Wrapper

The logWrapper enhances your Lambda function logs by automatically prepending jobId (from message) and traceId (from AWS X-Ray) to all log statements. This improves log traceability across distributed services.

$3


- Automatically extracts AWS X-Ray trace ID
- Includes jobId from message when available
- Enhances context.log directly - no code changes needed
- Works seamlessly with existing log levels (info, error, debug, warn, trace, etc.)

$3

`javascript
import { logWrapper, sqsEventAdapter } from '@adobe/spacecat-shared-utils';

async function run(message, context) {
const { log } = context;

// Use context.log as usual - trace IDs are added automatically
log.info('Processing started');
// Output: [jobId=xxx] [traceId=1-xxx-xxx] Processing started
}

export const main = wrap(run)
.with(sqsEventAdapter)
.with(logWrapper) // Add this line early in the wrapper chain
.with(dataAccess)
.with(sqs)
.with(secrets)
.with(helixStatus);
`

Note: The logWrapper enhances context.log directly. All existing code using context.log will automatically include trace IDs and job IDs in logs without any code changes.

SQS Event Adapter

The library also includes an SQS event adapter to convert an SQS record into a function parameter. This is useful when working with AWS Lambda functions that are triggered by an SQS event. Usage:

`javascript
import { sqsEventAdapter } from '@adobe/spacecat-shared-utils';

// ...

export const main = wrap(run)
.with(dataAccess)
.with(sqsEventAdapter) // Add this line
.with(sqs)
.with(secrets)
.with(helixStatus);
``

AWS X-Ray Integration

$3

Extracts the current AWS X-Ray trace ID from the segment. Returns null if not in AWS Lambda or no segment is available.

`javascript
import { getTraceId } from '@adobe/spacecat-shared-utils';

const traceId = getTraceId();
// Returns: '1-5e8e8e8e-5e8e8e8e5e8e8e8e5e8e8e8e' or null
`

This function is automatically used by logWrapper to include trace IDs in logs.

Testing

This library includes a comprehensive test suite to ensure the reliability of the utility functions. To run the tests, use the following command:

`bash
npm test
``

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.