'use strict';
console.log('Loading function ...');
var oss = require('ali-oss').Wrapper;
var fs = require('fs');
var jimp = require("jimp");
module.exports.resize = function (eventBuf, ctx, callback) {
console.log('Received event:', eventBuf.toString());
var event = JSON.parse(eventBuf);
var ossEvent = event.events[0];
// Required by OSS sdk: OSS region is prefixed with "oss-", e.g. "oss-cn-shanghai"
var ossRegion = "oss-" + ossEvent.region;
// Create oss client.
var client = new oss({
region: ossRegion,
// Credentials can be retrieved from context
accessKeyId: ctx.credentials.accessKeyId,
accessKeySecret: ctx.credentials.accessKeySecret,
stsToken: ctx.credentials.securityToken
});
// Bucket name is from OSS event
client.useBucket(ossEvent.oss.bucket.name);
// Processed images will be saved to processed/
var newKey = ossEvent.oss.object.key.replace("source/", "processed/");
var tmpFile = "/tmp/processed.png";
// Get object
console.log('Getting object: ', ossEvent.oss.object.key)
client.get(ossEvent.oss.object.key).then(function (val) {
// Read object from buffer
jimp.read(val.content, function (err, image) {
if (err) {
console.error("Failed to read image");
callback(err);
return;
}
// Resize the image and save it to a tmp file
image.resize(128, 128).write(tmpFile, function (err) {
if (err) {
console.error("Failed to write image locally");
callback(err);
return;
}
// Putting object back to OSS with the new key
console.log('Putting object: ', newKey);
client.put(newKey, tmpFile).then(function (val) {
console.log('Put object:', val);
callback(null, val);
return;
}).catch(function (err) {
console.error('Failed to put object: %j', err);
callback(err);
return
});
});
});
}).catch(function (err) {
console.error('Failed to get object: %j', err);
callback(err);
return
});
};
# -*- coding: utf-8 -*-
import oss2, json
from wand.image import Image
def resize(event, context):
evt = json.loads(event)
creds = context.credentials
# Required by OSS sdk
auth=oss2.StsAuth(
creds.access_key_id,
creds.access_key_secret,
creds.security_token)
evt = evt['events'][0]
bucket_name = evt['oss']['bucket']['name']
endpoint = 'oss-' + evt['region'] + '.aliyuncs.com'
bucket = oss2.Bucket(auth, endpoint, bucket_name)
objectName = evt['oss']['object']['key']
# Processed images will be saved to processed/
newKey = objectName.replace("source/", "processed/")
remote_stream = bucket.get_object(objectName)
if not remote_stream:
return
remote_stream = remote_stream.read()
with Image(blob=remote_stream) as img:
with img.clone() as i:
i.resize(128, 128)
new_blob = i.make_blob()
bucket.put_object(newKey, new_blob)
<?php
use OSS\OssClient;
function resize($event, $context) {
$event = json_decode($event, $assoc = true);
$accessKeyId = $context["credentials"]["accessKeyId"];
$accessKeySecret = $context["credentials"]["accessKeySecret"];
$securityToken = $context["credentials"]["securityToken"];
$evt = $event['events'][0];
$bucketName = $evt['oss']['bucket']['name'];
$endpoint = 'oss-' . $evt['region'] . '.aliyuncs.com';
$objectName = $evt['oss']['object']['key'];
$newKey = str_replace("source/", "processed/", $objectName);
try {
$ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint, false, $securityToken);
$content = $ossClient->getObject($bucketName , $objectName);
if ($content == null || $content == "") {
return;
}
$imagick = new Imagick();
$imagick->readImageBlob($content);
$imagick->resizeImage(128, 128, Imagick::FILTER_LANCZOS, 1);
$ossClient->putObject($bucketName, $newKey, $imagick->getImageBlob());
} catch (OssException $e) {
print($e->getMessage());
}
}
