459 lines
14 KiB
Python
459 lines
14 KiB
Python
from openflexure_microscope.api.utilities import get_bool, JsonResponse
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from openflexure_microscope.api.views import MicroscopeView
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from openflexure_microscope.utilities import filter_dict
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from flask import jsonify, request, abort, url_for, redirect, send_file
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class ListAPI(MicroscopeView):
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def get(self):
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"""
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Get list of image captures.
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.. :quickref: Captures; Get collection of captures
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:>header Accept: application/json
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:query include_unavailable: return json representations of captures that have been completely deleted
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:>jsonarr boolean available: availability of capture data
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:>jsonarr string filename: filename of capture
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:>jsonarr string id: unique id of the capture object
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:>jsonarr boolean keep_on_disk: keep the capture file on microscope after closing
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:>jsonarr boolean locked: file locked for modifications (mostly used for video recording)
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:>jsonarr string path: path on pi storage to the capture file, if available
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:>jsonarr boolean stream: capture stored in-memory as a BytesIO stream
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:>jsonarr json uri: - **download** *(string)*: api uri to the capture file download
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- **state** *(string)*: api uri to the capture json representation
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:>header Content-Type: application/json
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:status 200: capture found
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:status 404: no capture found with that id
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"""
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include_unavailable = get_bool(request.args.get("include_unavailable"))
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if include_unavailable:
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captures = [image.state for image in self.microscope.camera.images]
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else:
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captures = [
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image.state
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for image in self.microscope.camera.images
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if image.state["available"]
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]
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return jsonify(captures)
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def delete(self):
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"""
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Delete all captures (not yet implemented)
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.. :quickref: Captures; Delete all captures
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"""
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for image in self.microscope.camera.images:
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image.delete()
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captures = [image.state for image in self.microscope.camera.images]
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return jsonify(captures)
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def post(self):
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"""
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Create a new image capture.
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.. :quickref: Captures; New capture
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**Example request**:
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.. sourcecode:: http
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POST /camera/capture HTTP/1.1
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Accept: application/json
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{
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"filename": "myfirstcapture",
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"temporary": false,
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"use_video_port": true,
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"bayer": true,
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"size": {
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"width": 640,
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"height": 480
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}
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}
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:>header Accept: application/json
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:<json string filename: filename of stored capture
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:<json boolean temporary: delete the capture file on microscope after closing
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:<json boolean use_video_port: capture still image from the video port
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:<json boolean bayer: keep raw capture data in the image file
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:<json json size: - **x** *(int)*: x-axis resize
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- **y** *(int)*: y-axis resize
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:>json boolean available: availability of capture data
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:>json string filename: filename of capture
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:>json string id: unique id of the capture object
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:>json boolean temporary: delete the capture file on microscope after closing
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:>json boolean locked: file locked for modifications (mostly used for video recording)
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:>json string path: path on pi storage to the capture file, if available
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:>json boolean stream: capture stored in-memory as a BytesIO stream
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:>json json uri: - **download** *(string)*: api uri to the capture file download
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- **state** *(string)*: api uri to the capture json representation
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:<header Content-Type: application/json
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:status 200: capture created
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"""
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payload = JsonResponse(request)
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filename = payload.param("filename")
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temporary = payload.param("temporary", default=False, convert=bool)
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use_video_port = payload.param("use_video_port", default=False, convert=bool)
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bayer = payload.param("bayer", default=True, convert=bool)
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metadata = payload.param("metadata", default={}, convert=dict)
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tags = payload.param("tags", default=[], convert=list)
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resize = payload.param("size", default=None)
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if resize:
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if ("width" in resize) and ("height" in resize):
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resize = (
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int(resize["width"]),
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int(resize["height"]),
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) # Convert dict to tuple
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else:
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abort(404)
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# Explicitally acquire lock (prevents empty files being created if lock is unavailable)
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with self.microscope.camera.lock:
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output = self.microscope.camera.new_image(
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temporary=temporary, filename=filename
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)
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self.microscope.camera.capture(
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output.file, use_video_port=use_video_port, resize=resize, bayer=bayer
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)
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# Inject system metadata
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system_metadata = {
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"microscope_settings": self.microscope.read_settings(),
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"microscope_state": self.microscope.state,
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"microscope_id": self.microscope.id,
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"microscope_name": self.microscope.name,
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}
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output.system_metadata.update(system_metadata)
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# Insert custom metadata
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output.put_metadata(metadata)
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# Insert custom tags
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output.put_tags(tags)
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return jsonify(output.state)
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class CaptureAPI(MicroscopeView):
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def get(self, capture_id):
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"""
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Get JSON representation of a capture
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.. :quickref: Capture; Get capture
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**Example request**:
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.. sourcecode:: http
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GET /camera/capture/d0b2067abbb946f19351e075c5e7cd5b/ HTTP/1.1
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Accept: application/json
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**Example response**:
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.. sourcecode:: http
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HTTP/1.1 200 OK
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Vary: Accept
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Content-Type: application/json
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{
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"available": true,
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"bytestream": false,
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"keep_on_disk": false,
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"locked": false,
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"metadata": {
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"filename": "2018-11-16_10-21-53.jpeg",
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"id": "d0b2067abbb946f19351e075c5e7cd5b",
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"path": "capture/2018-11-16_10-21-53.jpeg",
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"time": "2018-11-16_10-21-53"
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}
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"uri": {
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"download": "/api/v1/capture/d0b2067abbb946f19351e075c5e7cd5b/download",
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"state": "/api/v1/capture/d0b2067abbb946f19351e075c5e7cd5b/"
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}
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}
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:>json boolean available: availability of capture data
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:>json string filename: filename of capture
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:>json string id: unique id of the capture object
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:>json boolean keep_on_disk: keep the capture file on microscope after closing
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:>json boolean locked: file locked for modifications (mostly used for video recording)
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:>json string path: path on pi storage to the capture file, if available
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:>json boolean stream: capture stored in-memory as a BytesIO stream
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:>json json uri: - **download** *(string)*: api uri to the capture file download
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- **state** *(string)*: api uri to the capture json representation
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj:
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return abort(404) # 404 Not Found
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# Get capture state
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capture_metadata = capture_obj.state
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# Add API routes to returned state
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uri_dict = {
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"uri": {
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"state": "{}".format(url_for(".capture", capture_id=capture_obj.id))
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}
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}
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# If available, also add download link
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if capture_metadata["available"]:
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uri_dict["uri"]["download"] = "{}download/{}".format(
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url_for(".capture", capture_id=capture_obj.id), capture_obj.filename
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)
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capture_metadata.update(uri_dict)
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return jsonify(capture_metadata)
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def delete(self, capture_id):
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"""
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Delete all capture data from the Pi, even if `keep_on_disk=true;`.
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.. :quickref: Capture; Delete capture.
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj:
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return abort(404) # 404 Not Found
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capture_obj.delete()
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return jsonify({"return": capture_id})
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def put(self, capture_id):
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"""
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Add arbitrary metadata to the capture
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.. :quickref: Capture; Update capture metadata
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**Example request**:
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.. sourcecode:: http
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PUT /camera/capture/d0b2067abbb946f19351e075c5e7cd5b HTTP/1.1
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Accept: application/json
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{
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"user_id": "ofm_1234",
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"patient_number": 1452,
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}
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:>header Accept: application/json
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:<header Content-Type: application/json
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:status 200: metadata updated
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj:
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return abort(404) # 404 Not Found
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data_dict = JsonResponse(request).json
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capture_obj.put_metadata(data_dict)
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capture_metadata = capture_obj.state
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return jsonify(capture_metadata)
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class DownloadRedirectAPI(MicroscopeView):
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def get(self, capture_id):
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"""
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Return image data for a capture.
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Return capture data as an image file with the requested filename.
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I.e., `/(capture_id)/download/foo.jpeg` will download the image as
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`foo.jpeg`, regardless of the capture's initially set filename.
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Route automatically redirects to download the capture under it's currently set filename.
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I.e., `/(capture_id)/download` will
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redirect to `/(capture_id)/download/(filename)`.
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.. :quickref: Capture; Download capture image
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**Example request**:
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.. sourcecode:: http
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GET /camera/capture/d0b2067abbb946f19351e075c5e7cd5b/download/2018-11-20_16-04-17.jpeg HTTP/1.1
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Accept: image/jpeg
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:>header Accept: image/jpeg
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:query thumbnail: return an image thumbnail e.g. ?thumbnail=true
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:>header Content-Type: image/jpeg
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:status 200: capture data found
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:status 404: no capture found with that id
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj or not capture_obj.state["available"]:
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return abort(404) # 404 Not Found
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thumbnail = get_bool(request.args.get("thumbnail"))
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return redirect(
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url_for(
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".capture_download",
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capture_id=capture_id,
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filename=capture_obj.filename,
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thumbnail=thumbnail,
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),
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code=307,
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)
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class DownloadAPI(MicroscopeView):
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def get(self, capture_id, filename):
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj or not capture_obj.state["available"]:
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return abort(404) # 404 Not Found
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thumbnail = get_bool(request.args.get("thumbnail"))
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# If no filename is specified, redirect to the capture's currently set filename
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if not filename:
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return redirect(
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url_for(
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"capture_download",
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capture_id=capture_id,
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filename=capture_obj.filename,
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thumbnail=thumbnail,
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),
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code=307,
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)
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# Download the image data using the requested filename
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if thumbnail:
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img = capture_obj.thumbnail
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else:
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img = capture_obj.data
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return send_file(img, mimetype="image/jpeg")
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class TagsAPI(MicroscopeView):
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def get(self, capture_id):
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"""
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Return tag list for a capture.
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.. :quickref: Capture; Show capture tags
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**Example request**:
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.. sourcecode:: http
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GET /camera/capture/d0b2067abbb946f19351e075c5e7cd5b/tags HTTP/1.1
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Accept: text/json
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:>header Accept: text/json
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:>header Content-Type: text/json
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:status 200: capture data found
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:status 404: no capture found with that id
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj or not capture_obj.state["available"]:
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return abort(404) # 404 Not Found
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metadata_tags = filter_dict(capture_obj.state, ["metadata", "tags"])
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return jsonify(metadata_tags)
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def put(self, capture_id):
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"""
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Add tags to the capture
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.. :quickref: Capture; Update capture tags
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**Example request**:
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.. sourcecode:: http
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PUT /camera/capture/d0b2067abbb946f19351e075c5e7cd5b/tags HTTP/1.1
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Accept: application/json
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["tests", "mytag", "someothertag"]
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:>header Accept: application/json
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:<header Content-Type: application/json
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:status 200: metadata updated
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj or not capture_obj.state["available"]:
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return abort(404) # 404 Not Found
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data_dict = JsonResponse(request).json
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if type(data_dict) != list:
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return abort(400)
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capture_obj.put_tags(data_dict)
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metadata_tags = filter_dict(capture_obj.state, ["metadata", "tags"])
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return jsonify(metadata_tags)
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def delete(self, capture_id):
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"""
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Delete tags from the capture
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.. :quickref: Capture; Delete tags.
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**Example request**:
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.. sourcecode:: http
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DELETE /camera/capture/d0b2067abbb946f19351e075c5e7cd5b/tags HTTP/1.1
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Accept: application/json
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["tests", "mytag"]
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:>header Accept: application/json
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:<header Content-Type: application/json
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:status 200: metadata updated
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"""
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capture_obj = self.microscope.camera.image_from_id(capture_id)
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if not capture_obj:
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return abort(404) # 404 Not Found
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data_dict = JsonResponse(request).json
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if type(data_dict) != list:
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return abort(400)
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for tag in data_dict:
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capture_obj.delete_tag(str(tag))
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metadata_tags = filter_dict(capture_obj.state, ["metadata", "tags"])
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return jsonify(metadata_tags)
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