Bug 1782344 - Remove cache directory and configs from CCacheStats. r=firefox-build-system-reviewers,ahochheiden

The info is unused and not part of the ccache --print-stats output that
we're going to use shortly.

Differential Revision: https://phabricator.services.mozilla.com/D166631

python/mozbuild/mozbuild/controller/building.py

@@ -877,9 +877,11 @@ class CCacheStats(object):
         ("cache_max_size", "max cache size"),
     ]
 
-    DIRECTORY_DESCRIPTION = "cache directory"
-    PRIMARY_CONFIG_DESCRIPTION = "primary config"
-    SECONDARY_CONFIG_DESCRIPTION = "secondary config"
+    SKIP_LINES = (
+        "cache directory",
+        "primary config",
+        "secondary config",
+    )
 
     STATS_KEYS_4_4 = [
         ("stats_updated", "Summary/Stats updated"),
@@ -938,6 +940,9 @@ class CCacheStats(object):
     ]
 
     SKIP_KEYS_4_4 = [
+        "Summary/Cache directory",
+        "Summary/Primary config",
+        "Summary/Secondary config",
         "Summary/Uncacheable",
         "Summary/Misses/Direct",
         "Summary/Misses/Preprocessed",
@@ -946,10 +951,6 @@ class CCacheStats(object):
         "Errors/Could not find compiler",
     ]
 
-    DIRECTORY_DESCRIPTION_4_4 = "Summary/Cache directory"
-    PRIMARY_CONFIG_DESCRIPTION_4_4 = "Summary/Primary config"
-    SECONDARY_CONFIG_DESCRIPTION_4_4 = "Summary/Secondary config"
-
     ABSOLUTE_KEYS = {"cache_files", "cache_size", "cache_max_size"}
     FORMAT_KEYS = {"cache_size", "cache_max_size"}
 
@@ -960,9 +961,6 @@ class CCacheStats(object):
     def __init__(self, output=None, is_version_4_4_or_newer=False):
         """Construct an instance from the output of ccache -s."""
         self._values = {}
-        self.cache_dir = ""
-        self.primary_config = ""
-        self.secondary_config = ""
 
         if not output:
             return
@@ -996,13 +994,6 @@ class CCacheStats(object):
                 subhead = ""
 
     def _parse_line_4_4_plus(self, key, value):
-        if key.startswith(self.DIRECTORY_DESCRIPTION_4_4):
-            self.cache_dir = value
-        elif key.startswith(self.PRIMARY_CONFIG_DESCRIPTION_4_4):
-            self.primary_config = value
-        elif key.startswith(self.SECONDARY_CONFIG_DESCRIPTION_4_4):
-            self.secondary_config = value
-        else:
         for seq in self.STATS_KEYS_4_4:
             stat_key = seq[0]
             stat_description = seq[1]
@@ -1019,9 +1010,7 @@ class CCacheStats(object):
         else:
             if key not in self.SKIP_KEYS_4_4:
                 raise ValueError(
-                        "Failed to parse ccache stats output: '{}' '{}'".format(
-                            key, value
-                        )
+                    "Failed to parse ccache stats output: '{}' '{}'".format(key, value)
                 )
 
     def _parse_human_format(self, output):
@@ -1032,24 +1021,13 @@ class CCacheStats(object):
 
     def _parse_line(self, line):
         line = six.ensure_text(line)
-        if line.startswith(self.DIRECTORY_DESCRIPTION):
-            self.cache_dir = self._strip_prefix(line, self.DIRECTORY_DESCRIPTION)
-        elif line.startswith(self.PRIMARY_CONFIG_DESCRIPTION):
-            self.primary_config = self._strip_prefix(
-                line, self.PRIMARY_CONFIG_DESCRIPTION
-            )
-        elif line.startswith(self.SECONDARY_CONFIG_DESCRIPTION):
-            self.secondary_config = self._strip_prefix(
-                self._strip_prefix(line, self.SECONDARY_CONFIG_DESCRIPTION),
-                "(readonly)",
-            )
-        else:
         for stat_key, stat_description in self.STATS_KEYS:
             if line.startswith(stat_description):
                 raw_value = self._strip_prefix(line, stat_description)
                 self._values[stat_key] = self._parse_value(raw_value)
                 break
         else:
+            if not line.startswith(self.SKIP_LINES):
                 raise ValueError("Failed to parse ccache stats output: %s" % line)
 
     @staticmethod
@@ -1113,7 +1091,6 @@ class CCacheStats(object):
 
     def __sub__(self, other):
         result = CCacheStats()
-        result.cache_dir = self.cache_dir
 
         for k, prefix in self.STATS_KEYS:
             if k not in self._values and k not in other._values:
@@ -1133,11 +1110,6 @@ class CCacheStats(object):
         LEFT_ALIGN = 34
         lines = []
 
-        if self.cache_dir:
-            lines.append(
-                "%s%s" % (self.DIRECTORY_DESCRIPTION.ljust(LEFT_ALIGN), self.cache_dir)
-            )
-
         for stat_key, stat_description in self.STATS_KEYS:
             if stat_key not in self._values:
                 continue

python/mozbuild/mozbuild/test/controller/test_ccachestats.py

@@ -405,7 +405,6 @@ Uncacheable:
 
     def test_parse_zero_stats_message(self):
         stats = CCacheStats(self.STAT0)
-        self.assertEqual(stats.cache_dir, "/home/tlin/.ccache")
         self.assertEqual(stats.hit_rates(), (0, 0, 0))
 
     def test_hit_rate_of_diff_stats(self):
@@ -435,7 +434,6 @@ Uncacheable:
         stats_diff = stat3 - stat2
         self.assertEqual(
             str(stat3),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   12004\n"
             "cache hit (preprocessed)              1786\n"
             "cache miss                           26348\n"
@@ -454,7 +452,6 @@ Uncacheable:
         )
         self.assertEqual(
             str(stats_diff),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   10104\n"
             "cache hit (preprocessed)              1486\n"
             "cache miss                           23748\n"
@@ -478,7 +475,6 @@ Uncacheable:
         stats_diff = stat5 - stat4
         self.assertEqual(
             str(stat4),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   21039\n"
             "cache hit (preprocessed)              2315\n"
             "cache miss                           39370\n"
@@ -498,7 +494,6 @@ Uncacheable:
         )
         self.assertEqual(
             str(stat5),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   21039\n"
             "cache hit (preprocessed)              2315\n"
             "cache miss                           39372\n"
@@ -518,7 +513,6 @@ Uncacheable:
         )
         self.assertEqual(
             str(stats_diff),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                       0\n"
             "cache hit (preprocessed)                 0\n"
             "cache miss                               2\n"
@@ -544,7 +538,6 @@ Uncacheable:
         stats_diff = stat6 - stat3
         self.assertEqual(
             str(stat6),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                  319287\n"
             "cache hit (preprocessed)            125987\n"
             "cache hit rate                          37\n"
@@ -570,7 +563,6 @@ Uncacheable:
         )
         self.assertEqual(
             str(stat3),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   12004\n"
             "cache hit (preprocessed)              1786\n"
             "cache miss                           26348\n"
@@ -589,7 +581,6 @@ Uncacheable:
         )
         self.assertEqual(
             str(stats_diff),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                  307283\n"
             "cache hit (preprocessed)            124201\n"
             "cache hit rate                          37\n"
@@ -618,7 +609,6 @@ Uncacheable:
         stat7 = CCacheStats(self.STAT7)
         self.assertEqual(
             str(stat7),
-            "cache directory                   /Users/tlin/.ccache\n"
             "cache hit (direct)                   27035\n"
             "cache hit (preprocessed)             13939\n"
             "cache hit rate                          39\n"
@@ -642,7 +632,6 @@ Uncacheable:
         stat8 = CCacheStats(self.STAT8)
         self.assertEqual(
             str(stat8),
-            "cache directory                   /home/psimonyi/.ccache\n"
             f"stats zero time                   {int(TIMESTAMP)}\n"
             f"stats zeroed                      {int(TIMESTAMP)}\n"
             "cache hit (direct)                     571\n"
@@ -667,7 +656,6 @@ Uncacheable:
         stat9 = CCacheStats(self.STAT9)
         self.assertEqual(
             str(stat9),
-            "cache directory                   /Users/tlin/.ccache\n"
             f"stats zero time                   {int(TIMESTAMP)}\n"
             f"stats zeroed                      {int(TIMESTAMP)}\n"
             f"stats updated                     {int(TIMESTAMP2)}\n"
@@ -702,7 +690,6 @@ Uncacheable:
         stat10 = CCacheStats(self.STAT10, True)
         self.assertEqual(
             str(stat10),
-            "cache directory                   /home/suer/.ccache\n"
             f"stats updated                     {int(TIMESTAMP)}\n"
             "cache hit (direct)                     197\n"
             "cache hit (preprocessed)               719\n"
@@ -726,7 +713,6 @@ Uncacheable:
         stat11 = CCacheStats(self.STAT11, True)
         self.assertEqual(
             str(stat11),
-            "cache directory                   /home/suer/.ccache\n"
             f"stats updated                     {int(TIMESTAMP)}\n"
             "cache hit (direct)                       0\n"
             "cache hit (preprocessed)                 0\n"
@@ -741,7 +727,6 @@ Uncacheable:
         stat12 = CCacheStats(self.STAT12, True)
         self.assertEqual(
             str(stat12),
-            "cache directory                   /home/suer/.ccache\n"
             "stats updated                            0\n"
             "cache hit (direct)                       0\n"
             "cache hit (preprocessed)                 0\n"
@@ -756,7 +741,6 @@ Uncacheable:
         stat13 = CCacheStats(self.STAT13, True)
         self.assertEqual(
             str(stat13),
-            "cache directory                   /Users/leebc/.ccache\n"
             f"stats updated                     {int(TIMESTAMP)}\n"
             "cache hit (direct)                  280542\n"
             "cache hit (preprocessed)                 0\n"