Fix installation

* Remove '--use-wheel' flag
* Remove pip dependency
* Make GSITK an optional dependency

Dockerfile.template

@@ -21,8 +21,8 @@ ONBUILD WORKDIR /senpy-plugins/
 
 WORKDIR /usr/src/app
 COPY test-requirements.txt requirements.txt /usr/src/app/
-RUN pip install --no-cache-dir --use-wheel -r test-requirements.txt -r requirements.txt
+RUN pip install --no-cache-dir -r test-requirements.txt -r requirements.txt
 COPY . /usr/src/app/
-RUN pip install --no-cache-dir --no-index --no-deps --editable .
+RUN pip install --no-cache-dir --editable '/usr/src/app[evaluation]'
 
 ENTRYPOINT ["python", "-m", "senpy", "-f", "/senpy-plugins/", "--host", "0.0.0.0"]

senpy/extensions.py

@@ -17,15 +17,19 @@ import copy
 import errno
 import logging
 
-from gsitk.datasets.datasets import DatasetManager
-
 
 logger = logging.getLogger(__name__)
 
+try:
+    from gsitk.datasets.datasets import DatasetManager
+    GSITK_AVAILABLE = True
+except ImportError:
+    logger.warn('GSITK is not installed. Some functions will be unavailable.')
+    GSITK_AVAILABLE = False
+
 
 class Senpy(object):
     """ Default Senpy extension for Flask """
-
     def __init__(self,
                  app=None,
                  plugin_folder=".",
@@ -44,7 +48,6 @@ class Senpy(object):
 
         self._default = None
         self._plugins = {}
-        self._dm = DatasetManager()
         if plugin_folder:
             self.add_folder(plugin_folder)
 
@@ -200,13 +203,17 @@ class Senpy(object):
                 raise Error(
                     status=404,
                     message="The dataset '{}' is not valid".format(dataset))
-        datasets = self._dm.prepare_datasets(datasets_name)
+        dm = DatasetManager()
+        datasets = dm.prepare_datasets(datasets_name)
         return datasets
 
     @property
     def datasets(self):
+        if not GSITK_AVAILABLE:
+            raise Exception('GSITK is not available. Install it to use this function.')
         self._dataset_list = {}
-        for item in self._dm.get_datasets():
+        dm = DatasetManager()
+        for item in dm.get_datasets():
             for key in item:
                 if key in self._dataset_list:
                     continue
@@ -216,7 +223,8 @@ class Senpy(object):
         return self._dataset_list
 
     def evaluate(self, params):
-
+        if not GSITK_AVAILABLE:
+            raise Exception('GSITK is not available. Install it to use this function.')
         logger.debug("evaluating request: {}".format(params))
         results = AggregatedEvaluation()
         results.parameters = params

senpy/plugins/__init__.py

@@ -19,16 +19,22 @@ import importlib
 import yaml
 import threading
 
+import numpy as np
+
 from .. import models, utils
 from .. import api
 
-from gsitk.evaluation.evaluation import Evaluation as Eval
-from sklearn.pipeline import Pipeline
-
-import numpy as np
 
 logger = logging.getLogger(__name__)
 
+try:
+    from gsitk.evaluation.evaluation import Evaluation as Eval
+    from sklearn.pipeline import Pipeline
+    GSITK_AVAILABLE = True
+except ImportError:
+    logger.warn('GSITK is not installed. Some functions will be unavailable.')
+    GSITK_AVAILABLE = False
+
 
 class PluginMeta(models.BaseMeta):
     _classes = {}
@@ -461,7 +467,7 @@ def install_deps(*plugins):
     for info in plugins:
         requirements = info.get('requirements', [])
         if requirements:
-            pip_args = [sys.executable, '-m', 'pip', 'install', '--use-wheel']
+            pip_args = [sys.executable, '-m', 'pip', 'install']
             for req in requirements:
                 pip_args.append(req)
             logger.info('Installing requirements: ' + str(requirements))
@@ -586,6 +592,9 @@ def _from_loaded_module(module, info=None, **kwargs):
 
 
 def evaluate(plugins, datasets, **kwargs):
+    if not GSITK_AVAILABLE:
+        raise Exception('GSITK is not available. Install it to use this function.')
+
     ev = Eval(tuples=None,
               datasets=datasets,
               pipelines=[plugin.as_pipe() for plugin in plugins])

setup.py

-import pip
 from setuptools import setup
-# parse_requirements() returns generator of pip.req.InstallRequirement objects
-from pip.req import parse_requirements
 
 with open('senpy/VERSION') as f:
     __version__ = f.read().strip()
     assert __version__
 
-try:
-    install_reqs = parse_requirements(
-        "requirements.txt", session=pip.download.PipSession())
-    test_reqs = parse_requirements(
-        "test-requirements.txt", session=pip.download.PipSession())
-except AttributeError:
-    install_reqs = parse_requirements("requirements.txt")
-    test_reqs = parse_requirements("test-requirements.txt")
 
-install_reqs = [str(ir.req) for ir in install_reqs]
-test_reqs = [str(ir.req) for ir in test_reqs]
+def parse_requirements(filename):
+    """ load requirements from a pip requirements file """
+    with open(filename, 'r') as f:
+        lineiter = list(line.strip() for line in f)
+    return [line for line in lineiter if line and not line.startswith("#")]
+
+
+install_reqs = parse_requirements("requirements.txt")
+test_reqs = parse_requirements("test-requirements.txt")
 
 
 setup(