OME-ZARR Progress bar

qim3d/io/loading.py

@@ -26,7 +26,7 @@ import qim3d
 from qim3d.utils.logger import log
 from qim3d.utils.misc import get_file_size, sizeof, stringify_path
 from qim3d.utils.system import Memory
-from qim3d.utils import ProgressBar
+from qim3d.utils.progress_bar import FileLoadingProgressBar
 import trimesh
 
 dask.config.set(scheduler="processes") 
@@ -824,7 +824,7 @@ def load(
     )
 
     if progress_bar and os.name == 'posix':
-        with ProgressBar(path):
+        with FileLoadingProgressBar(path):
             data = loader.load(path)
     else:
         data = loader.load(path)

qim3d/io/ome_zarr.py

@@ -3,8 +3,12 @@ Exporting data to different formats.
 """
 
 import os
+import math
+import shutil
+
 import numpy as np
 import zarr
+import tqdm
 from ome_zarr.io import parse_url
 from ome_zarr.writer import (
     write_image,
@@ -16,10 +20,6 @@ from ome_zarr.writer import (
 from ome_zarr.scale import dask_resize
 from ome_zarr.reader import Reader
 from ome_zarr import scale
-
-import math
-import shutil
-from qim3d.utils.logger import log
 from scipy.ndimage import zoom
 from typing import Any, Callable, Iterator, List, Tuple, Union
 import dask.array as da
@@ -27,6 +27,10 @@ from skimage.transform import (
     resize,
 )
 
+from qim3d.utils.logger import log
+from qim3d.utils.progress_bar import OmeZarrExportProgressBar
+from qim3d.utils.ome_zarr import get_n_chunks
+
 
 ListOfArrayLike = Union[List[da.Array], List[np.ndarray]]
 ArrayLike = Union[da.Array, np.ndarray]
@@ -79,6 +83,8 @@ def export_ome_zarr(
     order=0,
     replace=False,
     method="scaleZYX",
+    progress_bar:bool = True,
+    progress_bar_repeat_time = "auto",
 ):
     """
     Export image data to OME-Zarr format with pyramidal downsampling.
@@ -92,7 +98,7 @@ def export_ome_zarr(
         downsample_rate (int, optional): Factor by which to downsample the data for each scale. Must be greater than 1. Defaults to 2.
         order (int, optional): Interpolation order to use when downsampling. Defaults to 0 (nearest-neighbor).
         replace (bool, optional): Whether to replace the existing directory if it already exists. Defaults to False.
-
+        progress_bar (bool, optional): Whether to display progress while writing data to disk. Defaults to True.
     Raises:
         ValueError: If the directory already exists and `replace` is False.
         ValueError: If `downsample_rate` is less than or equal to 1.
@@ -145,14 +151,23 @@ def export_ome_zarr(
     mip, axes = _create_mip(image=data, fmt=fmt, scaler=scaler, axes="zyx")
 
     log.info("Writing data to disk")
-    write_multiscale(
-        mip,
+    kwargs  = dict(
+            pyramid=mip,
             group=root,
             fmt=fmt,
             axes=axes,
             name=None,
             compute=True,
         )
+    if progress_bar:
+        n_chunks = get_n_chunks(
+            shapes = (scaled_data.shape for scaled_data in mip),
+            dtypes = (scaled_data.dtype for scaled_data in mip)
+            )
+        with OmeZarrExportProgressBar(path = path, n_chunks = n_chunks, reapeat_time=progress_bar_repeat_time):
+            write_multiscale(**kwargs)
+    else:
+        write_multiscale(**kwargs)
 
     log.info("All done!")
     return

qim3d/utils/__init__.py

 from . import doi
-from .progress_bar import ProgressBar
 from .system import Memory
 
 from .misc import (

qim3d/utils/ome_zarr.py

+from zarr.util import normalize_chunks, normalize_dtype, normalize_shape
+import numpy as np
+
+def get_chunk_size(shape:tuple, dtype):
+    """
+    How the chunk size is computed in zarr.storage.init_array_metadata which is ran in the chain of functions we use 
+    in qim3d.io.export_ome_zarr function
+
+    Parameters
+    ----------
+    - shape: shape of the data
+    - dtype: dtype of the data
+    """
+    object_codec = None
+    dtype, object_codec = normalize_dtype(dtype, object_codec)
+    shape = normalize_shape(shape) + dtype.shape
+    dtype = dtype.base
+    chunks = None
+    chunks = normalize_chunks(chunks, shape, dtype.itemsize)
+    return chunks
+
+
+def get_n_chunks(shapes:tuple, dtypes:tuple):
+    """
+    Estimates how many chunks we will use in advence so we can pass this number to a progress bar and track how many
+    have been already written to disk
+
+    Parameters
+    ----------
+    - shapes: list of shapes of the data for each scale
+    - dtype: dtype of the data
+    """
+    n_chunks = 0
+    for shape, dtype in zip(shapes, dtypes):
+        chunk_size = np.array(get_chunk_size(shape, dtype))
+        shape = np.array(shape)
+        ratio = shape/chunk_size
+        n_chunks += np.prod(ratio)
+    return int(n_chunks)
+

qim3d/utils/progress_bar.py

 from threading import Timer
 import psutil
 import sys
+import os
+from abc import ABC, abstractmethod
 
 from tqdm.auto import tqdm
 
@@ -21,21 +23,69 @@ class RepeatTimer(Timer):
         while not self.finished.wait(self.interval):
             self.function(*self.args, **self.kwargs)
 
+class ProgressBar(ABC):
+    def __init__(self,tqdm_kwargs:dict, repeat_time: float,  *args, **kwargs):
+        """
+        Context manager for ('with' statement) to track progress during a long progress over 
+        which we don't have control (like loading a file) and thus can not insert the tqdm
+        updates into loop
+        Thus we have to run parallel thread with forced activation to check the state
+
+
+        Parameters:
+        ------------
+        - tqdm_kwargs (dict): Passed directly to tqdm constructor
+        - repeat_time (float): How often the timer runs the function (in seconds)
+        """
+        self.timer = RepeatTimer(repeat_time, self.update_pbar)
+        self.pbar = tqdm(**tqdm_kwargs)
+        self.last_update = 0
+
+    def update_pbar(self):
+        new_update = self.get_new_update()
+        update = new_update - self.last_update
+
+        try:
+            self.pbar.update(update)
+        except (
+            AttributeError
+        ):  # When we leave the context manager, we delete the pbar so it can not be updated anymore
+            # It's because it takes quite a long time for the timer to end and might update the pbar
+            # one more time before ending which messes up the whole thing
+            pass
+
+        self.last_update = new_update
+
+
+    @abstractmethod
+    def get_new_update(self):
+        pass
+
+    def __enter__(self):
+        self.timer.start()
+
+    def __exit__(self, exception_type, exception_value, exception_traceback):
+        self.timer.cancel()
+        self.pbar.clear()
+        self.pbar.n = self.pbar.total
+        self.pbar.display()
+        del self.pbar  # So the update process can not update it anymore
+
 
-class ProgressBar:
+
+class FileLoadingProgressBar(ProgressBar):
     def __init__(self, filename: str, repeat_time: float = 0.5, *args, **kwargs):
         """
-        Creates class for 'with' statement to track progress during loading a file into memory
+        Context manager ('with' statement) to track progress during loading a file into memory
 
         Parameters:
         ------------
         - filename (str): to get size of the file
         - repeat_time (float, optional): How often the timer checks how many bytes were loaded. Even if very small,
             it doesn't make the progress bar smoother as there are only few visible changes in number of read_chars.
-            Defaults to 0.25
+            Defaults to 0.5
         """
-        self.timer = RepeatTimer(repeat_time, self.memory_check)
-        self.pbar = tqdm(
+        tqdm_kwargs = dict(
             total=get_file_size(filename),
             desc="Loading: ",
             unit="B",
@@ -45,33 +95,77 @@ class ProgressBar:
             bar_format="{l_bar}{bar}| {n_fmt}{unit}/{total_fmt}{unit}  [{elapsed}<{remaining}, "
             "{rate_fmt}{postfix}]",
         )
-        self.last_memory = 0
+        super().__init__( tqdm_kwargs, repeat_time)
         self.process = psutil.Process()
 
-    def memory_check(self):
+    def get_new_update(self):
         counters = self.process.io_counters()
         try:
             memory = counters.read_chars
         except AttributeError:
             memory = counters.read_bytes + counters.other_bytes
+        return memory
 
-        try:
-            self.pbar.update(memory - self.last_memory)
-        except (
-            AttributeError
-        ):  # When we leave the context manager, we delete the pbar so it can not be updated anymore
-            # It's because it takes quite a long time for the timer to end and might update the pbar
-            # one more time before ending which messes up the whole thing
-            pass
+class OmeZarrExportProgressBar(ProgressBar):
+    def __init__(self,path:str, n_chunks:int, reapeat_time="auto"):
+        """
+        Context manager to track the exporting of OmeZarr files.
 
-        self.last_memory = memory
+        Parameters
+        ----------
+        path : str
+            The folder path where the files will be saved.
+        n_chunks : int
+            The total number of chunks to track.
+        repeat_time : int or float, optional
+            The interval (in seconds) for updating the progress bar. Defaults to "auto", which 
+            sets the update frequency based on the number of chunks.
+        """
 
-    def __enter__(self):
-        self.timer.start()
 
-    def __exit__(self, exception_type, exception_value, exception_traceback):
-        self.timer.cancel()
-        self.pbar.clear()
-        self.pbar.n = self.pbar.total
-        self.pbar.display()
-        del self.pbar  # So the update process can not update it anymore
+
+        # Calculate the repeat time for the progress bar
+        if reapeat_time == "auto":
+            # Approximate the repeat time based on the number of chunks
+            # This ratio is based on reading the HOA dataset over the network:
+            # 620,000 files took 300 seconds to read
+            # The ratio is little smaller than needed to avoid disk stress
+
+            reapeat_time = n_chunks / 1500
+
+        else:
+            reapeat_time = float(reapeat_time)
+
+        # We don't want to update the progress bar too often anyway
+        if reapeat_time < 0.5:
+            reapeat_time = 0.5
+
+        self.path = path
+        tqdm_kwargs = dict(
+            total = n_chunks,
+            unit = "Chunks",
+            desc = "Saving",
+            unit_scale = True
+
+        )
+        super().__init__(tqdm_kwargs, reapeat_time)
+        self.last_update = 0
+
+    def get_new_update(self):
+        def file_count(folder_path:str):
+            """
+            Goes recursively through the folders and counts how many files are there, 
+            Doesn't count metadata json files
+            """
+            count = 0
+            for path in os.listdir(folder_path):
+                new_path = os.path.join(folder_path, path)
+                if os.path.isfile(new_path):
+                    filename = os.path.basename(os.path.normpath(new_path))
+                    if not filename.startswith("."):
+                        count += 1
+                else:
+                    count += file_count(new_path)
+            return count
+
+        return file_count(self.path)