Setup camera capture. Captured image has datetime timestamp overlay

Main function here is the capture function. All attrs are currently fixed.
The server fetches the saved image, in order to not have read/write conflict we first save captured image as 'assets/foo.jpg' and after capture rename it to 'assets/capture.jpg'.

brewCamera.py

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+import os
+import time
+import picamera
+import threading
+from datetime import datetime
+
+from logger import logger
+
+class BrewCamera():
+    def __init__(self, interval=10):
+        self.lastCaptureTimestamp = None
+        self.interval = interval
+        self.warmupTime = 0.3
+
+    def spawnBackgroundCapture(self):
+        thread = threading.Thread(target=self.captureOnIntervalForever, args=())
+        thread.daemon = True
+        thread.start()
+        logger.info("spawned camera capture daemon at interval: {}".format(self.interval))
+
+    def captureOnIntervalForever(self):
+        while True:
+            time.sleep(self.interval - self.warmupTime)
+            self.capture()
+
+    def capture(self):
+        try:
+            logger.debug('Capturing image')
+            with picamera.PiCamera() as camera:
+                camera.resolution = (1297, 972)
+                camera.rotation = 180
+                camera.annotate_background = picamera.Color('black')
+                camera.annotate_text_size = 50 # (values 6 to 160, default is 32)
+                camera.annotate_text = datetime.now().strftime('%A %d %b %Y %H:%M:%S')
+
+                # Camera warm-up time
+                time.sleep(self.warmupTime)
+                camera.capture('assets/foo.jpg')
+                self.lastCaptureTime = datetime.now()
+                os.replace('assets/foo.jpg', 'assets/capture.jpg')
+
+        except picamera.exc.PiCameraMMALError as error:
+            logger.error('Picamera MMAL exception. Retrying picture in 1 second', es={
+                error: str(error),
+                exception: error.__class__.__name__
+            })
+            time.sleep(1)
+            self.capture()
+