def getCameraObject(exif):
"""
Given image exif data, either creates a new camera object or returns an
existing one.
"""
cameraName = getExifValue(exif, "Model")
if cameraName:
serial = getExifValue(exif, "BodySerialNumber")
cameras = CAMERA_MODEL.get().objects.filter(name=cameraName, serial=serial)
if cameras.exists():
return cameras[0]
else:
return CAMERA_MODEL.get().objects.create(name=cameraName, serial=serial)
return None
def getCameraObject(exif):
'''
Given image exif data, either creates a new camera object or returns an
existing one.
'''
cameraName = getExifValue(exif, 'Model')
if cameraName:
serial = getExifValue(exif, 'BodySerialNumber')
cameras = CAMERA_MODEL.get().objects.filter(name=cameraName,
serial=serial)
if cameras.exists():
return cameras[0]
else:
return CAMERA_MODEL.get().objects.create(name=cameraName,
serial=serial)
return None
def getExifTimeString(request, uploadedFile):
exifData = getExifData(uploadedFile)
if 'exifData' in request.POST:
# update the parsed exif dictionary with the incoming exif json
exifData.update(json.loads(request.POST['exifData']))
# get metadata for image set, create the image set
# get exif time for image set
exifTime = None
exifTimeString = getExifValue(exifData, 'DateTimeOriginal')
if not exifTimeString:
exifTimeString = getExifValue(exifData, 'DateTime')
elif exifTimeString is None:
return HttpResponse(json.dumps(
{'error': 'Could not determine image date'}),
content_type='application/json',
status=406)
return exifData, exifTimeString
def create_image_set(file,
filename,
author,
vehicle,
camera,
width_height=None,
form_tz=None,
form_tz_name=None,
exif_data=None,
exif_time=None,
object_id=None,
time_mark=None,
latlon=None):
"""
Create image set from one image, and save image set to database
:param file:
:param filename:
:param width_height:
:param author:
:param vehicle:
:param camera:
:param form_tz:
:param form_tz_name:
:param exif_data:
:param exif_time:
:param object_id:
:param time_mark:
:param latlon:
:return:
"""
if not exif_time:
exif_time = datetime.now(pytz.utc)
# create a new image set instance
if object_id:
new_image_set = IMAGE_SET_MODEL.get()(pk=int(object_id))
else:
new_image_set = IMAGE_SET_MODEL.get()()
new_image_set.acquisition_time = exif_time
new_image_set.name = filename
if isinstance(camera, CAMERA_MODEL.get()):
new_image_set.camera = camera
new_image_set.flight = getFlight(new_image_set.acquisition_time, vehicle)
track = None
if new_image_set.flight:
if not form_tz_name:
form_tz_name = new_image_set.flight.timezone
if not form_tz and form_tz_name:
form_tz = pytz.timezone(form_tz_name)
try:
track = new_image_set.flight.track
except:
# the flight may not have a track
pass
new_image_set.acquisition_timezone = form_tz_name
if track:
new_image_set.track_position = getClosestPosition(track=track,
timestamp=exif_time,
vehicle=vehicle)
if exif_data:
new_image_set.exif_position = buildExifPosition(
exif_data, new_image_set.camera, vehicle, exif_time, form_tz)
elif latlon:
new_image_set.exif_position = buildExifPositionFromLatLon(
latlon, exif_time)
new_image_set.author = author
# timing stats
if time_mark:
now_time = time.time()
upload_and_save_time = now_time - time_mark
new_image_set.uploadAndSaveTime = upload_and_save_time
overall_start_time = cache.get("imageAutoloadGlobalTimeMark", None)
if overall_start_time:
total_time_since_notify = now_time - float(overall_start_time)
new_image_set.totalTimeSinceNotify = total_time_since_notify
# end timing stats
new_image_set.save()
# build the metadata for the single image
single_image_metadata = {'imageSet': new_image_set}
try:
if exif_data:
single_image_metadata['width'] = int(
getExifValue(exif_data, 'ExifImageWidth'))
single_image_metadata['height'] = int(
getExifValue(exif_data, 'ExifImageHeight'))
else:
if not width_height:
dt = Image.open(file)
width_height = dt.size
single_image_metadata['width'] = width_height[0]
single_image_metadata['height'] = width_height[1]
except:
pass
# convert the image if needed
converted_file = convert_to_jpg_if_needed(file)
if converted_file:
# create the single image for the source
single_image_metadata['fileSizeBytes'] = get_file_size(file)
single_image_metadata['file'] = file
single_image_metadata['imageType'] = ImageType.source.value
single_image_metadata['raw'] = False
single_image_metadata['thumbnail'] = False
source_single_image = SINGLE_IMAGE_MODEL.get().objects.create(
**single_image_metadata)
file = converted_file
# create the single image for the raw / full / renderable
try:
single_image_metadata['fileSizeBytes'] = get_file_size(file)
single_image_metadata['file'] = file
single_image_metadata['imageType'] = ImageType.full.value
single_image_metadata['raw'] = True
single_image_metadata['thumbnail'] = False
except:
pass
new_single_image = SINGLE_IMAGE_MODEL.get().objects.create(
**single_image_metadata)
# relay was here
createThumbnail(new_single_image, new_image_set)
# TODO: replace this with a BoundedSemaphore
# TODO: we are pretty sure this was causing the fail in tiling and in importing images because many deepzoom
# threads are kicked off at the same time yet this code uses just one flag. #FIX
# TODO: suggest putting a single flag for each image we are tiling into REDIS
# dbServer = couchdb.Server(settings.COUCHDB_URL)
# db = dbServer[settings.COUCHDB_FILESTORE_NAME]
# if 'create_deepzoom_thread' in db:
# myFlag = db['create_deepzoom_thread']
# myFlag['active'] = True
# db['create_deepzoom_thread'] = myFlag
# else:
# db['create_deepzoom_thread'] = {'active': True}
createDeepzoomTiles(new_image_set)
return new_image_set
def saveImage(request):
"""
Image drag and drop, saves the files and to the database.
"""
if request.method == "POST":
timeMark = time.time()
form = UploadFileForm(request.POST, request.FILES)
if form.is_valid():
# create and save a single image obj
uploadedFile = request.FILES["file"]
newImage = SINGLE_IMAGE_MODEL.get()(file=uploadedFile)
form_tz = form.getTimezone()
resource = form.getResource()
exifData = getExifData(newImage)
# save image dimensions and file size
try:
newImage.width = int(getExifValue(exifData, "ExifImageWidth"))
newImage.height = int(getExifValue(exifData, "ExifImageHeight"))
except:
pass
newImage.fileSizeBytes = uploadedFile.size
# get exif time
exifTime = None
exifTimeString = getExifValue(exifData, "DateTimeOriginal")
if not exifTimeString:
exifTimeString = getExifValue(exifData, "DateTime")
if exifTimeString:
exifTime = datetime.strptime(str(exifTimeString), "%Y:%m:%d %H:%M:%S")
if (form_tz != pytz.utc) and exifTime:
localized_time = form_tz.localize(exifTime)
exifTime = TimeUtil.timeZoneToUtc(localized_time)
else:
exifTime = exifTime.replace(tzinfo=pytz.utc)
else:
# read the time from the last modified time that we pushed in from imageUpload.js
if "HTTP_LASTMOD" in request.META:
modtimesString = request.META["HTTP_LASTMOD"]
if modtimesString:
modtime = None
theImages = modtimesString.split(",")
for i in theImages:
k, v = i.split("||")
if k == str(uploadedFile.name):
modtime = datetime.fromtimestamp(int(v) / 1000)
break
if modtime:
localized_time = form_tz.localize(modtime)
exifTime = TimeUtil.timeZoneToUtc(localized_time)
if not exifTime:
exifTime = datetime.now(pytz.utc)
# create a new image set instance
author = None
if request.user.is_authenticated():
author = request.user # set user as image author
elif "username" in request.POST:
try:
username = str(request.POST["username"])
author = User.objects.get(username=username)
except:
author = User.objects.get(username="******")
newImageSet = IMAGE_SET_MODEL.get()()
newImageSet.acquisition_time = exifTime
newImageSet.acquisition_timezone = form.getTimezoneName()
fileName = uploadedFile.name
newImageSet.name = fileName
newImageSet.camera = getCameraObject(exifData)
newImageSet.track_position = getTrackPosition(exifTime, resource)
newImageSet.exif_position = buildExifPosition(exifData, newImageSet.camera, resource, exifTime, form_tz)
newImageSet.author = author
newImageSet.resource = resource
newImageSet.finish_initialization(request)
nowTime = time.time()
uploadAndSaveTime = nowTime - timeMark
newImageSet.uploadAndSaveTime = uploadAndSaveTime
overallStartTime = cache.get("imageAutoloadGlobalTimeMark", None)
if overallStartTime:
totalTimeSinceNotify = nowTime - float(overallStartTime)
newImageSet.totalTimeSinceNotify = totalTimeSinceNotify
newImageSet.save()
# link the "image set" to "image".
newImage.imageSet = newImageSet
newImage.save()
# create a thumbnail
thumbnailStream = createThumbnailFile(newImage.file)
SINGLE_IMAGE_MODEL.get().objects.create(
file=thumbnailStream, raw=False, thumbnail=True, imageSet=newImageSet
)
# create deep zoom tiles for viewing in openseadragon.
if newImageSet.create_deepzoom:
deepzoomTilingThread = Thread(target=newImageSet.create_deepzoom_image)
deepzoomTilingThread.start()
# newImageSet.create_deepzoom_image()
imageSetDict = newImageSet.toMapDict()
# pass the image set to the client as json.
return HttpResponse(
json.dumps({"success": "true", "json": imageSetDict}, cls=DatetimeJsonEncoder),
content_type="application/json",
)
else:
return HttpResponse(
json.dumps({"error": "Imported image is not valid", "details": form.errors}),
content_type="application/json",
)
def saveImage(request):
"""
Image drag and drop, saves the files and to the database.
"""
if request.method == 'POST':
timeMark = time.time()
form = UploadFileForm(request.POST, request.FILES)
if form.is_valid():
# create and save a single image obj
uploadedFile = request.FILES['file']
newSingleImage = SINGLE_IMAGE_MODEL.get()(file=uploadedFile)
form_tz = form.getTimezone()
resource = form.getResource()
exifData = getExifData(newSingleImage)
# save image dimensions and file size
try:
newSingleImage.width = int(
getExifValue(exifData, 'ExifImageWidth'))
newSingleImage.height = int(
getExifValue(exifData, 'ExifImageHeight'))
except:
pass
newSingleImage.fileSizeBytes = uploadedFile.size
# get exif time
exifTime = None
exifTimeString = getExifValue(exifData, 'DateTimeOriginal')
if not exifTimeString:
exifTimeString = getExifValue(exifData, 'DateTime')
if exifTimeString:
exifTime = datetime.strptime(str(exifTimeString),
'%Y:%m:%d %H:%M:%S')
if (form_tz != pytz.utc) and exifTime:
localized_time = form_tz.localize(exifTime)
exifTime = TimeUtil.timeZoneToUtc(localized_time)
else:
exifTime = exifTime.replace(tzinfo=pytz.utc)
else:
# read the time from the last modified time that we pushed in from imageUpload.js
if 'HTTP_LASTMOD' in request.META:
modtimesString = request.META['HTTP_LASTMOD']
if modtimesString:
modtime = None
theImages = modtimesString.split(',')
for i in theImages:
k, v = i.split('||')
if k == str(uploadedFile.name):
modtime = datetime.fromtimestamp(int(v) / 1000)
break
if modtime:
localized_time = form_tz.localize(modtime)
exifTime = TimeUtil.timeZoneToUtc(localized_time)
if not exifTime:
exifTime = datetime.now(pytz.utc)
# create a new image set instance
author = None
if request.user.is_authenticated():
author = request.user # set user as image author
elif 'username' in request.POST:
try:
username = str(request.POST['username'])
author = User.objects.get(username=username)
except:
author = User.objects.get(username='******')
if 'object_id' in request.POST:
newImageSet = IMAGE_SET_MODEL.get()(
pk=int(request.POST['object_id']))
else:
newImageSet = IMAGE_SET_MODEL.get()()
newImageSet.acquisition_time = exifTime
newImageSet.acquisition_timezone = form.getTimezoneName()
fileName = uploadedFile.name
newImageSet.name = fileName
newImageSet.camera = getCameraObject(exifData)
newImageSet.track_position = getTrackPosition(exifTime, resource)
newImageSet.exif_position = buildExifPosition(
exifData, newImageSet.camera, resource, exifTime, form_tz)
newImageSet.author = author
newImageSet.resource = resource
newImageSet.finish_initialization(request)
nowTime = time.time()
uploadAndSaveTime = nowTime - timeMark
newImageSet.uploadAndSaveTime = uploadAndSaveTime
overallStartTime = cache.get("imageAutoloadGlobalTimeMark", None)
if overallStartTime:
totalTimeSinceNotify = nowTime - float(overallStartTime)
newImageSet.totalTimeSinceNotify = totalTimeSinceNotify
newImageSet.save()
# link the "image set" to "image".
newSingleImage.imageSet = newImageSet
newSingleImage.save()
# relay if needed
if 'relay' in request.POST:
# create the record for the datum
# fire a message for new data
deletePostKey(request.POST, 'relay')
addRelay(newImageSet, request.FILES, json.dumps(request.POST),
reverse('xgds_save_image'))
# create a thumbnail
thumbnailStream = createThumbnailFile(newSingleImage.file)
SINGLE_IMAGE_MODEL.get().objects.create(file=thumbnailStream,
raw=False,
thumbnail=True,
imageSet=newImageSet)
# create deep zoom tiles for viewing in openseadragon.
if (newImageSet.create_deepzoom):
deepzoomTilingThread = Thread(
target=newImageSet.create_deepzoom_image)
deepzoomTilingThread.start()
# newImageSet.create_deepzoom_image()
imageSetDict = newImageSet.toMapDict()
# pass the image set to the client as json.
return HttpResponse(json.dumps(
{
'success': 'true',
'json': imageSetDict
},
cls=DatetimeJsonEncoder),
content_type='application/json')
else:
return HttpResponse(json.dumps({
'error': 'Imported image is not valid',
'details': form.errors
}),
content_type='application/json')
