use enumerated backend_id to reference a backend

src/c/pyeclib_c/pyeclib_c.c

@@ -84,7 +84,7 @@ static PyObject * pyeclib_c_check_metadata(PyObject *self, PyObject *args);
  * @param k integer number of data elements
  * @param m integer number of checksum elements
  * @param w integer word size in bytes
- * @param type_str string name of erasure coding algorithm
+ * @param backend_id erasure coding backend
  * @return pointer to PyObject or NULL on error
  */
 static PyObject *
@@ -94,10 +94,10 @@ pyeclib_c_init(PyObject *self, PyObject *args)
   PyObject *pyeclib_obj_handle = NULL;
   int k, m, hd=0;
   int use_inline_chksum = 0, use_algsig_chksum = 0;
-  const char *type_str;
+  const ec_backend_id_t backend_id;
 
   /* Obtain and validate the method parameters */
-  if (!PyArg_ParseTuple(args, "iis|iii", &k, &m, &type_str, &hd, &use_inline_chksum, &use_algsig_chksum)) {
+  if (!PyArg_ParseTuple(args, "iii|iii", &k, &m, &backend_id, &hd, &use_inline_chksum, &use_algsig_chksum)) {
     PyErr_SetString(PyECLibError, "Invalid arguments passed to pyeclib.init");
     return NULL;
   }
@@ -113,7 +113,7 @@ pyeclib_c_init(PyObject *self, PyObject *args)
   pyeclib_handle->ec_args.hd = hd;
   pyeclib_handle->ec_args.ct = use_inline_chksum ? CHKSUM_CRC32 : CHKSUM_NONE;
 
-  pyeclib_handle->ec_desc = liberasurecode_instance_create(type_str, &(pyeclib_handle->ec_args));
+  pyeclib_handle->ec_desc = liberasurecode_instance_create(backend_id, &(pyeclib_handle->ec_args));  
   if (pyeclib_handle->ec_desc <= 0) {
     PyErr_SetString(PyECLibError, "Invalid arguments passed to liberasurecode_instance_create");
     goto error; 
@@ -668,7 +668,7 @@ pyeclib_c_get_metadata(PyObject *self, PyObject *args)
     return NULL;
   }
 
-  ret = liberasurecode_get_fragment_metadata(pyeclib_handle->ec_desc, fragment, &c_fragment_metadata);
+  ret = liberasurecode_get_fragment_metadata(fragment, &c_fragment_metadata);
 
   if (ret < 0) {
     fragment_metadata = NULL;

src/python/pyeclib/core.py

@@ -59,17 +59,13 @@ class ECPyECLibDriver(object):
 
         name = self.ec_type.name
 
-        if name == "flat_xor_hd_3":
+        if name == "flat_xor_hd":
-          hd = 3
-          name = "flat_xor_hd"
-        elif name == "flat_xor_hd_4":
           hd = 4 
-          name = "flat_xor_hd"
 
         self.handle = pyeclib_c.init(
             self.k,
             self.m,
-            name, 
+            ec_type.value, 
             hd,
             self.inline_chksum,
             self.algsig_chksum)

src/python/pyeclib/ec_iface.py

@@ -84,8 +84,8 @@ class PyECLib_EC_Types(PyECLibEnum):
     # 0 is False in the boolean sense but enum members evaluate to True
     jerasure_rs_vand = 1
     jerasure_rs_cauchy = 2
-    flat_xor_hd_3 = 3
+    flat_xor_hd = 3
-    flat_xor_hd_4 = 4
+    isa_l_rs_vand = 4
 
 
 # Output of Erasure (en)Coding process are data "fragments".  Fragment data

test/test_core.py

@@ -89,4 +89,7 @@ if __name__ == "__main__":
         run_under_valgrind = True
         test_cmd_prefix = "valgrind --leak-check=full "
         log_filename_prefix = "valgrind"
-    unittest.main(verbosity=2)
+    if sys.version_info<(2,7,0):
+        unittest.main()
+    else:
+        unittest.main(verbosity=2)

test/test_pyeclib_api.py

@@ -128,13 +128,10 @@ class TestPyECLibDriver(unittest.TestCase):
                      k=12, m=3, ec_type="jerasure_rs_vand", chksum_type="algsig"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=12, m=6, ec_type="flat_xor_hd_4", chksum_type="algsig"))
+                     k=12, m=6, ec_type="flat_xor_hd", chksum_type="algsig"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_4", chksum_type="algsig"))
+                     k=10, m=5, ec_type="flat_xor_hd", chksum_type="algsig"))
-        pyeclib_drivers.append(
-            ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_3", chksum_type="algsig"))
 
         filesize = 1024 * 1024 * 3
         file_str = ''.join(random.choice(ascii_letters) for i in range(filesize))
@@ -169,13 +166,10 @@ class TestPyECLibDriver(unittest.TestCase):
                      k=12, m=3, ec_type="jerasure_rs_vand", chksum_type="algsig"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=12, m=6, ec_type="flat_xor_hd_4", chksum_type="algsig"))
+                     k=12, m=6, ec_type="flat_xor_hd", chksum_type="algsig"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_4", chksum_type="algsig"))
+                     k=10, m=5, ec_type="flat_xor_hd", chksum_type="algsig"))
-        pyeclib_drivers.append(
-            ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_3", chksum_type="algsig"))
 
         filesize = 1024 * 1024 * 3
         file_str = ''.join(random.choice(ascii_letters) for i in range(filesize))
@@ -358,16 +352,10 @@ class TestPyECLibDriver(unittest.TestCase):
                      k=12, m=3, ec_type="jerasure_rs_cauchy"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=12, m=6, ec_type="flat_xor_hd_4"))
+                     k=12, m=6, ec_type="flat_xor_hd"))
         pyeclib_drivers.append(
             ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_4"))
+                     k=10, m=5, ec_type="flat_xor_hd"))
-        pyeclib_drivers.append(
-            ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=10, m=5, ec_type="flat_xor_hd_3"))
-        pyeclib_drivers.append(
-            ECDriver("pyeclib.core.ECPyECLibDriver",
-                     k=9, m=5, ec_type="flat_xor_hd_3"))
 
         for pyeclib_driver in pyeclib_drivers:
             for file_size in self.file_sizes:

test/test_pyeclib_c.py

@@ -28,6 +28,7 @@ import time
 import unittest
 
 import pyeclib_c
+from pyeclib.ec_iface import PyECLib_EC_Types
 
 
 class Timer:
@@ -58,10 +59,10 @@ class TestPyECLib(unittest.TestCase):
         self.iterations = 100
 
         # EC algorithm and config parameters
-        self.rs_types = [("jerasure_rs_vand"), ("jerasure_rs_cauchy")]
+        self.rs_types = [(PyECLib_EC_Types.jerasure_rs_vand), (PyECLib_EC_Types.jerasure_rs_cauchy)]
-        self.xor_types = [("flat_xor_hd", 12, 6, 4),
+        self.xor_types = [(PyECLib_EC_Types.flat_xor_hd, 12, 6, 4),
-                          ("flat_xor_hd", 10, 5, 4),
+                          (PyECLib_EC_Types.flat_xor_hd, 10, 5, 4),
-                          ("flat_xor_hd", 10, 5, 3)]
+                          (PyECLib_EC_Types.flat_xor_hd, 10, 5, 3)]
 
         # Input temp files for testing
         self.sizes = ["101-K", "202-K", "303-K"]
@@ -224,17 +225,15 @@ class TestPyECLib(unittest.TestCase):
         for (ec_type, k, m, hd) in self.xor_types:
             print(("\nRunning tests for %s k=%d, m=%d" % (ec_type, k, m)))
 
-            type_str = "%s" % (ec_type)
-
             for size_str in self.sizes:
-                avg_time = self.time_encode(k, m, type_str, hd,
+                avg_time = self.time_encode(k, m, ec_type.value, hd,
                                             size_str,
                                             self.iterations)
                 print("Encode (%s): %s" %
                       (size_str, self.get_throughput(avg_time, size_str)))
 
             for size_str in self.sizes:
-                success, avg_time = self.time_decode(k, m, type_str, hd,
+                success, avg_time = self.time_decode(k, m, ec_type.value, hd,
                                                      size_str,
                                                      self.iterations)
                 self.assertTrue(success)
@@ -242,7 +241,7 @@ class TestPyECLib(unittest.TestCase):
                       (size_str, self.get_throughput(avg_time, size_str)))
 
             for size_str in self.sizes:
-                success, avg_time = self.time_reconstruct(k, m, type_str, hd,
+                success, avg_time = self.time_reconstruct(k, m, ec_type.value, hd,
                                                           size_str,
                                                           self.iterations)
                 self.assertTrue(success)
@@ -253,7 +252,7 @@ class TestPyECLib(unittest.TestCase):
         """
         :return boolean, True if all tests passed
         """
-        handle = pyeclib_c.init(num_data, num_parity, ec_type)
+        handle = pyeclib_c.init(num_data, num_parity, ec_type.value)
         success = True
 
         #
@@ -299,7 +298,7 @@ class TestPyECLib(unittest.TestCase):
                 for size_str in self.sizes:
                     avg_time = self.time_encode(self.num_datas[i],
                                                 self.num_parities[i],
-                                                ec_type, self.num_parities[i] + 1, 
+                                                ec_type.value, self.num_parities[i] + 1,
                                                 size_str, self.iterations)
 
                     print(("Encode (%s): %s" %
@@ -309,7 +308,7 @@ class TestPyECLib(unittest.TestCase):
                 for size_str in self.sizes:
                     success, avg_time = self.time_decode(self.num_datas[i],
                                                          self.num_parities[i],
-                                                         ec_type, self.num_parities[i] + 1,
+                                                         ec_type.value, self.num_parities[i] + 1,
                                                          size_str, self.iterations)
 
                     self.assertTrue(success)
@@ -320,7 +319,7 @@ class TestPyECLib(unittest.TestCase):
                 for size_str in self.sizes:
                     success, avg_time = self.time_reconstruct(self.num_datas[i],
                                                               self.num_parities[i],
-                                                              ec_type, self.num_parities[i] + 1,
+                                                              ec_type.value, self.num_parities[i] + 1,
                                                               size_str,
                                                               self.iterations)
                     self.assertTrue(success)