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# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# [START app]
import logging
import os
from flask import Flask, request
from google.cloud import storage
# [start config]
app = Flask(__name__)
# Configure this environment variable via app.yaml
CLOUD_STORAGE_BUCKET = os.environ['CLOUD_STORAGE_BUCKET']
# [end config]
# [START form]
@app.route('/')
def index():
return """
<form method="POST" action="/upload" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit">
</form>
"""
# [END form]
# [START upload]
@app.route('/upload', methods=['POST'])
def upload():
"""Process the uploaded file and upload it to Google Cloud Storage."""
uploaded_file = request.files.get('file')
if not uploaded_file:
return 'No file uploaded.', 400
# Create a Cloud Storage client.
gcs = storage.Client()
# Get the bucket that the file will be uploaded to.
bucket = gcs.get_bucket(CLOUD_STORAGE_BUCKET)
# Create a new blob and upload the file's content.
blob = bucket.blob(uploaded_file.filename)
blob.upload_from_string(
uploaded_file.read(),
content_type=uploaded_file.content_type
)
# The public URL can be used to directly access the uploaded file via HTTP.
return blob.public_url
# [END upload]
@app.errorhandler(500)
def server_error(e):
logging.exception('An error occurred during a request.')
return """
An internal error occurred: <pre>{}</pre>
See logs for full stacktrace.
""".format(e), 500
if __name__ == '__main__':
# This is used when running locally. Gunicorn is used to run the
# application on Google App Engine. See entrypoint in app.yaml.
app.run(host='127.0.0.1', port=8080, debug=True)
# [END app]