Run starts the queue and blocks until it's shut down

InternalServerError is a convenience function for returning an internal server error

Utility methods for logging

New creates a new logger

SaveToJpegBuffer saves an image as JPEG to a buffer

SaveToWebPBuffer saves an image as WebP to a buffer

BadRequest is a convenience function for returning a bad request error

ResizeImage loads an image from a buffer and resizes it.

Blur applies gaussian blur to an image

GetParams parses and returns all the path and query parameters

Grayscale converts an image to grayscale

catchVipsError returns the vips error buffer as an error

Process adds a job to the queue, waits for it to process, and returns the result

Router returns a http router

Create creates a HMAC based on the parameter values, encoded as urlsafe base64

HMAC generates and appends an HMAC to a URL path + query params

New returns a new Provider instance

NewCache instantiates a new cache

NewEmptyImage returns an empty image object

NewTask creates a new image processing task

Router returns a http router

UnrefImage unrefs an image object

Serve a static file

Utilities for building a URL with query params BuildQuery builds a query parameter string for the given values It differs from the stdlib url.Values.E

Len returns the current number of jobs waiting in the queue buffer

New returns a new Provider instance

New returns a new Provider instance

Recovery is a handler for handling panics

Run starts the health checker

Shutdown libvips

Validate validates that the parameter values matches a given HMAC

intParam tries to get a param and convert it to an Integer

sendImage writes the processed image to the response with appropriate headers

Blur applies gaussian blur to the image

Grayscale turns the image into grayscale

Initialize libvips if it's not already started

LogFields logs the given keys and values for a request

Logger is a handler that logs requests using Zap

Metrics is a handler that collects performance metrics

New initializes a new processor instance

New creates a new Queue with the specified amount of workers

Serve starts an http server for metrics and healthchecks

SetUserComment sets the UserComment field in the exif metadata for an image

Status returns the status of the health checks

Tracer is a handler that adds tracing for handlers

addQueryParam adds a query parameter to a byte buffer

Set headers for static file handlers

Utility methods for logging

Get returns an object from the cache if it exists, otherwise it loads it into the cache and returns it

Health is a handler for health check status

ServiceUnavailable is a convenience function for returning a service unavailable error

ValidateHMAC validates the URL path/query params, given an hmac in a query parameter named hmac

blur applies gaussian blur to an image

buildCacheKey creates a unique key for request coalescing based on image parameters

getFileExtension gets the file extension (if present) from the path params, and validates it

getQueryParams returns whether the grayscale and blur queryparams are present

getSize gets the image size from the size or the width/height path params, and validates it

grayscale turns an image into grayscale