Serverless Image Resizer Service

Usage:

/thumbs/p-(profile)-ver1/(filename in source bucket)

/txtimg/?querystring (check bottom)

/txtimg/encrypted (check bottom)

Environment Variables:

config_event_log	yes/no
config_event_log_tablename
config_event_log_key
config_product_key
config_cache_in_days	default 30
config_read_buckets_mandatory	yes/no
config_read_buckets	comma separated values
config_write_buckets_mandatory	yes/no
config_write_buckets	comma separated values
config_error_image	url
config_log_target	dynamodb/firehose
config_log_tablename	dynamodb tablename
config_log_topic	firehose topic
config_enable_access_log	yes/no
config_enable_error_log	yes/no

Sample profiles:

{
	"product": "ONE",
	"profiles": {
		"profile1": {
			"ACL": "public-read",
			"d_b": "ct-cartrade-thumbs",
			"error_image": "4_3",
			"h": "225",
			"m": "crop",
			"M": "image/jpeg",
			"s_b": "ct-cartrade",
			"w": "300"
		},
		"profile2": {
			"ACL": "public-read",
			"d_b": "ct-cartrade-thumbs",
			"error_image": "4_3",
			"h": "225",
			"m": "crop",
			"M": "image/jpeg",
			"s_b": "ct-cartrade",
			"w": "300"
		},
	}
}

Query Params:

Property	Value	Mandatory	Description
w	numeric	Yes	Width
h	numeric	Yes	Height
s_b	string	Yes	Source Bucket
s_k	string	Yes	Source Key
d_b	string	Yes	Destination Bucket
d_k	string	Yes	Destination Key
ACL	private,public,public-read	Yes	Access Control
M	image/jpeg, image/png		Output MIME Type
m	crop, fill		Mode
b_c	255,255,255		Background Color. RGB values.
wm	0, 1		WaterMark
wm_b	string	Yes	WaterMark Bucket
wm_k	string	Yes	WaterMark Key
wm_p	TL,TR,BL,BR,C	Yes	Position TopLeft,TopRight,BottomLeft,BottomRight,Center
wm_s	number	Yes	Size in %
wm_t	4,8,16		Watermark Tiles
wm_o	0.0 to 10		Watermark Opacity
t	1		Text Write
t_t	String	Yes	Text to Write (should be urlencoded, no special chars) Use _NL_ to give line break
t_p	TL,BL	Yes	Position
t_s	number	Yes	Font Size
t_c	255,255,255	Yes	Font Color. RGB values
n_s	1		Do not save file. no destination bucket required
resize	again		Force recreation of thumb, even if already generated

event log dynamodb table format:

{
	"logname" => "",  pk
	"time" => date("Y-m-d H:i:s"),  sk
	"expire" => time() + ( 30 * 86400 ),
	"event" => requestContext json array
}

/txtimg?querystring

/txtimg?encrypted_querystring

encrypted_querystring = base64url_encode ( gzcompress( json_encode( \$query ) ))

Property	Value	Mandatory	Description
w	numeric	Yes	Width
h	numeric	Yes	Height
M	image/jpeg, image/png		Output MIME Type
b_c	255,255,255		Background Color. RGB values.
t_t	String	Yes	Text to Write (should be urlencoded, no special chars) Use _NL_ to give line break
t_s	number	Yes	Font Size
t_c	255,255,255	Yes	Font Color. RGB values
f	Arial ArialBold Ubuntu-Regular Ubuntu-Bold Ubuntu-Italic Ubuntu-BoldItalic Ubuntu-Light Ubuntu-LightItalic	Yes	Font