From da51b2b5a07716c2d4909a1ca58fe21f9e778bc5 Mon Sep 17 00:00:00 2001
From: Kelly Brazil <kellyjonbrazil@gmail.com>
Date: Mon, 12 Sep 2022 22:43:37 -0700
Subject: [PATCH] initial proc_interrupts parser

---
 jc/lib.py                     |   1 +
 jc/parsers/proc_interrupts.py | 213 ++++++++++++++++++++++++++++++++++
 2 files changed, 214 insertions(+)
 create mode 100644 jc/parsers/proc_interrupts.py

diff --git a/jc/lib.py b/jc/lib.py
index f6bbc733..106052cd 100644
--- a/jc/lib.py
+++ b/jc/lib.py
@@ -93,6 +93,7 @@ parsers = [
     'proc-diskstats',
     'proc-driver-rtc',
     'proc-filesystems',
+    'proc-interrupts',
     'proc-meminfo',
     'proc-modules',
     'ps',
diff --git a/jc/parsers/proc_interrupts.py b/jc/parsers/proc_interrupts.py
new file mode 100644
index 00000000..11057953
--- /dev/null
+++ b/jc/parsers/proc_interrupts.py
@@ -0,0 +1,213 @@
+"""jc - JSON Convert `/proc/interrupts` file parser
+
+Usage (cli):
+
+    $ cat /proc/interrupts | jc --proc
+
+or
+
+    $ jc /proc/interrupts
+
+or
+
+    $ cat /proc/interrupts | jc --proc-interrupts
+
+Usage (module):
+
+    import jc
+    result = jc.parse('proc', proc_interrupts_file)
+
+or
+
+    import jc
+    result = jc.parse('proc_interrupts', proc_interrupts_file)
+
+Schema:
+
+    [
+      {
+        "module":                   string,
+        "size":                     integer,
+        "used":                     integer,
+        "used_by": [
+                                    string
+        ],
+        "status":                   string,
+        "location":                 string
+      }
+    ]
+
+Examples:
+
+    $ cat /proc/interrupts | jc --proc -p
+    [
+      {
+        "module": "binfmt_misc",
+        "size": 24576,
+        "used": 1,
+        "used_by": [],
+        "status": "Live",
+        "location": "0xffffffffc0ab4000"
+      },
+      {
+        "module": "vsock_loopback",
+        "size": 16384,
+        "used": 0,
+        "used_by": [],
+        "status": "Live",
+        "location": "0xffffffffc0a14000"
+      },
+      {
+        "module": "vmw_vsock_virtio_transport_common",
+        "size": 36864,
+        "used": 1,
+        "used_by": [
+          "vsock_loopback"
+        ],
+        "status": "Live",
+        "location": "0xffffffffc0a03000"
+      },
+      ...
+    ]
+
+    $ proc_interrupts | jc --proc_interrupts -p -r
+    [
+      {
+        "module": "binfmt_misc",
+        "size": "24576",
+        "used": "1",
+        "used_by": [],
+        "status": "Live",
+        "location": "0xffffffffc0ab4000"
+      },
+      {
+        "module": "vsock_loopback",
+        "size": "16384",
+        "used": "0",
+        "used_by": [],
+        "status": "Live",
+        "location": "0xffffffffc0a14000"
+      },
+      {
+        "module": "vmw_vsock_virtio_transport_common",
+        "size": "36864",
+        "used": "1",
+        "used_by": [
+          "vsock_loopback"
+        ],
+        "status": "Live",
+        "location": "0xffffffffc0a03000"
+      },
+      ...
+    ]
+"""
+from typing import List, Dict
+import jc.utils
+
+
+class info():
+    """Provides parser metadata (version, author, etc.)"""
+    version = '1.0'
+    description = '`/proc/interrupts` file parser'
+    author = 'Kelly Brazil'
+    author_email = 'kellyjonbrazil@gmail.com'
+    compatible = ['linux']
+    hidden = True
+
+
+__version__ = info.version
+
+
+def _process(proc_data: List[Dict]) -> List[Dict]:
+    """
+    Final processing to conform to the schema.
+
+    Parameters:
+
+        proc_data:   (List of Dictionaries) raw structured data to process
+
+    Returns:
+
+        List of Dictionaries. Structured to conform to the schema.
+    """
+    int_list = {'size', 'used'}
+
+    for entry in proc_data:
+        for key in entry:
+            if key in int_list:
+                entry[key] = jc.utils.convert_to_int(entry[key])
+
+    return proc_data
+
+
+def parse(
+    data: str,
+    raw: bool = False,
+    quiet: bool = False
+) -> List[Dict]:
+    """
+    Main text parsing function
+
+    Parameters:
+
+        data:        (string)  text data to parse
+        raw:         (boolean) unprocessed output if True
+        quiet:       (boolean) suppress warning messages if True
+
+    Returns:
+
+        List of Dictionaries. Raw or processed structured data.
+    """
+    jc.utils.compatibility(__name__, info.compatible, quiet)
+    jc.utils.input_type_check(data)
+
+    raw_output: List = []
+
+    if jc.utils.has_data(data):
+        data_lines = data.splitlines()
+
+        # get the number of cpus
+        cpu_num = len(data_lines[0].split())
+
+        for line in filter(None, data_lines):
+
+            # skip non-data lines
+            if not ':' in line:
+                continue
+
+            # process data lines
+            split_line = line.split()
+            irq = split_line.pop(0)[:-1]
+
+            interrupts = []
+            if irq == 'ERR' or irq == 'MIS':
+                interrupts.extend(split_line)
+
+            elif irq.isdigit():
+                for _ in range(cpu_num):
+                    interrupts.append(split_line.pop(0))
+
+                interrupt_type = split_line.pop(0)
+                interrupt_info = split_line
+
+            else:
+                for _ in range(cpu_num):
+                    interrupts.append(split_line.pop(0))
+
+                interrupt_type = ' '.join(split_line)
+                interrupt_info = []
+
+
+            print(f'{cpu_num=}, {irq=}, {interrupts=}, {interrupt_type=}, {interrupt_info=}')
+
+            raw_output.append(
+                {
+                    'irq': irq,
+                    'cpu_num': cpu_num,
+                    'interrupts': interrupts,
+                    'interrupt_type': interrupt_type,
+                    'interrupt_info': interrupt_info or None
+                }
+            )
+
+    return raw_output if raw else _process(raw_output)