Adding upstream version 1.29.3.upstream/1.29.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 385 insertions, 0 deletions

diff --git a/collectors/python.d.plugin/varnish/varnish.chart.py b/collectors/python.d.plugin/varnish/varnish.chart.py
new file mode 100644
index 0000000..534d709
--- /dev/null
+++ b/collectors/python.d.plugin/varnish/varnish.chart.py
@@ -0,0 +1,385 @@
+# -*- coding: utf-8 -*-
+# Description:  varnish netdata python.d module
+# Author: ilyam8
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import re
+
+from bases.FrameworkServices.ExecutableService import ExecutableService
+from bases.collection import find_binary
+
+ORDER = [
+    'session_connections',
+    'client_requests',
+    'all_time_hit_rate',
+    'current_poll_hit_rate',
+    'cached_objects_expired',
+    'cached_objects_nuked',
+    'threads_total',
+    'threads_statistics',
+    'threads_queue_len',
+    'backend_connections',
+    'backend_requests',
+    'esi_statistics',
+    'memory_usage',
+    'uptime'
+]
+
+CHARTS = {
+    'session_connections': {
+        'options': [None, 'Connections Statistics', 'connections/s',
+                    'client metrics', 'varnish.session_connection', 'line'],
+        'lines': [
+            ['sess_conn', 'accepted', 'incremental'],
+            ['sess_dropped', 'dropped', 'incremental']
+        ]
+    },
+    'client_requests': {
+        'options': [None, 'Client Requests', 'requests/s',
+                    'client metrics', 'varnish.client_requests', 'line'],
+        'lines': [
+            ['client_req', 'received', 'incremental']
+        ]
+    },
+    'all_time_hit_rate': {
+        'options': [None, 'All History Hit Rate Ratio', 'percentage', 'cache performance',
+                    'varnish.all_time_hit_rate', 'stacked'],
+        'lines': [
+            ['cache_hit', 'hit', 'percentage-of-absolute-row'],
+            ['cache_miss', 'miss', 'percentage-of-absolute-row'],
+            ['cache_hitpass', 'hitpass', 'percentage-of-absolute-row']]
+    },
+    'current_poll_hit_rate': {
+        'options': [None, 'Current Poll Hit Rate Ratio', 'percentage', 'cache performance',
+                    'varnish.current_poll_hit_rate', 'stacked'],
+        'lines': [
+            ['cache_hit', 'hit', 'percentage-of-incremental-row'],
+            ['cache_miss', 'miss', 'percentage-of-incremental-row'],
+            ['cache_hitpass', 'hitpass', 'percentage-of-incremental-row']
+        ]
+    },
+    'cached_objects_expired': {
+        'options': [None, 'Expired Objects', 'expired/s', 'cache performance',
+                    'varnish.cached_objects_expired', 'line'],
+        'lines': [
+            ['n_expired', 'objects', 'incremental']
+        ]
+    },
+    'cached_objects_nuked': {
+        'options': [None, 'Least Recently Used Nuked Objects', 'nuked/s', 'cache performance',
+                    'varnish.cached_objects_nuked', 'line'],
+        'lines': [
+            ['n_lru_nuked', 'objects', 'incremental']
+        ]
+    },
+    'threads_total': {
+        'options': [None, 'Number Of Threads In All Pools', 'number', 'thread related metrics',
+                    'varnish.threads_total', 'line'],
+        'lines': [
+            ['threads', None, 'absolute']
+        ]
+    },
+    'threads_statistics': {
+        'options': [None, 'Threads Statistics', 'threads/s', 'thread related metrics',
+                    'varnish.threads_statistics', 'line'],
+        'lines': [
+            ['threads_created', 'created', 'incremental'],
+            ['threads_failed', 'failed', 'incremental'],
+            ['threads_limited', 'limited', 'incremental']
+        ]
+    },
+    'threads_queue_len': {
+        'options': [None, 'Current Queue Length', 'requests', 'thread related metrics',
+                    'varnish.threads_queue_len', 'line'],
+        'lines': [
+            ['thread_queue_len', 'in queue']
+        ]
+    },
+    'backend_connections': {
+        'options': [None, 'Backend Connections Statistics', 'connections/s', 'backend metrics',
+                    'varnish.backend_connections', 'line'],
+        'lines': [
+            ['backend_conn', 'successful', 'incremental'],
+            ['backend_unhealthy', 'unhealthy', 'incremental'],
+            ['backend_reuse', 'reused', 'incremental'],
+            ['backend_toolate', 'closed', 'incremental'],
+            ['backend_recycle', 'recycled', 'incremental'],
+            ['backend_fail', 'failed', 'incremental']
+        ]
+    },
+    'backend_requests': {
+        'options': [None, 'Requests To The Backend', 'requests/s', 'backend metrics',
+                    'varnish.backend_requests', 'line'],
+        'lines': [
+            ['backend_req', 'sent', 'incremental']
+        ]
+    },
+    'esi_statistics': {
+        'options': [None, 'ESI Statistics', 'problems/s', 'esi related metrics', 'varnish.esi_statistics', 'line'],
+        'lines': [
+            ['esi_errors', 'errors', 'incremental'],
+            ['esi_warnings', 'warnings', 'incremental']
+        ]
+    },
+    'memory_usage': {
+        'options': [None, 'Memory Usage', 'MiB', 'memory usage', 'varnish.memory_usage', 'stacked'],
+        'lines': [
+            ['memory_free', 'free', 'absolute', 1, 1 << 20],
+            ['memory_allocated', 'allocated', 'absolute', 1, 1 << 20]]
+    },
+    'uptime': {
+        'lines': [
+            ['uptime', None, 'absolute']
+        ],
+        'options': [None, 'Uptime', 'seconds', 'uptime', 'varnish.uptime', 'line']
+    }
+}
+
+
+def backend_charts_template(name):
+    order = [
+        '{0}_response_statistics'.format(name),
+    ]
+
+    charts = {
+        order[0]: {
+            'options': [None, 'Backend "{0}"'.format(name), 'kilobits/s', 'backend response statistics',
+                        'varnish.backend', 'area'],
+            'lines': [
+                ['{0}_beresp_hdrbytes'.format(name), 'header', 'incremental', 8, 1000],
+                ['{0}_beresp_bodybytes'.format(name), 'body', 'incremental', -8, 1000]
+            ]
+        },
+    }
+
+    return order, charts
+
+
+def storage_charts_template(name):
+    order = [
+        'storage_{0}_usage'.format(name),
+        'storage_{0}_alloc_objs'.format(name)
+    ]
+
+    charts = {
+        order[0]: {
+            'options': [None, 'Storage "{0}" Usage'.format(name), 'KiB', 'storage usage', 'varnish.storage_usage', 'stacked'],
+            'lines': [
+                ['{0}.g_space'.format(name), 'free', 'absolute', 1, 1 << 10],
+                ['{0}.g_bytes'.format(name), 'allocated', 'absolute', 1, 1 << 10]
+            ]
+        },
+        order[1]: {
+            'options': [None, 'Storage "{0}" Allocated Objects'.format(name), 'objects', 'storage usage', 'varnish.storage_alloc_objs', 'line'],
+            'lines': [
+                ['{0}.g_alloc'.format(name), 'allocated', 'absolute']
+            ]
+        }
+    }
+
+    return order, charts
+
+
+VARNISHSTAT = 'varnishstat'
+
+re_version = re.compile(r'varnish-(?:plus-)?(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)')
+
+
+class VarnishVersion:
+    def __init__(self, major, minor, patch):
+        self.major = major
+        self.minor = minor
+        self.patch = patch
+
+    def __str__(self):
+        return '{0}.{1}.{2}'.format(self.major, self.minor, self.patch)
+
+
+class Parser:
+    _backend_new = re.compile(r'VBE.([\d\w_.]+)\(.*?\).(beresp[\w_]+)\s+(\d+)')
+    _backend_old = re.compile(r'VBE\.[\d\w-]+\.([\w\d_]+).(beresp[\w_]+)\s+(\d+)')
+    _default = re.compile(r'([A-Z]+\.)?([\d\w_.]+)\s+(\d+)')
+
+    def __init__(self):
+        self.re_default = None
+        self.re_backend = None
+
+    def init(self, data):
+        data = ''.join(data)
+        parsed_main = Parser._default.findall(data)
+        if parsed_main:
+            self.re_default = Parser._default
+
+        parsed_backend = Parser._backend_new.findall(data)
+        if parsed_backend:
+            self.re_backend = Parser._backend_new
+        else:
+            parsed_backend = Parser._backend_old.findall(data)
+            if parsed_backend:
+                self.re_backend = Parser._backend_old
+
+    def server_stats(self, data):
+        return self.re_default.findall(''.join(data))
+
+    def backend_stats(self, data):
+        return self.re_backend.findall(''.join(data))
+
+
+class Service(ExecutableService):
+    def __init__(self, configuration=None, name=None):
+        ExecutableService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.instance_name = configuration.get('instance_name')
+        self.parser = Parser()
+        self.command = None
+        self.collected_vbe = set()
+        self.collected_storages = set()
+
+    def create_command(self):
+        varnishstat = find_binary(VARNISHSTAT)
+
+        if not varnishstat:
+            self.error("can't locate '{0}' binary or binary is not executable by user netdata".format(VARNISHSTAT))
+            return False
+
+        command = [varnishstat, '-V']
+        reply = self._get_raw_data(stderr=True, command=command)
+        if not reply:
+            self.error(
+                "no output from '{0}'. Is varnish running? Not enough privileges?".format(' '.join(self.command)))
+            return False
+
+        ver = parse_varnish_version(reply)
+        if not ver:
+            self.error("failed to parse reply from '{0}', used regex :'{1}', reply : {2}".format(
+                ' '.join(command), re_version.pattern, reply))
+            return False
+
+        if self.instance_name:
+            self.command = [varnishstat, '-1', '-n', self.instance_name]
+        else:
+            self.command = [varnishstat, '-1']
+
+        if ver.major > 4:
+            self.command.extend(['-t', '1'])
+
+        self.info("varnish version: {0}, will use command: '{1}'".format(ver, ' '.join(self.command)))
+
+        return True
+
+    def check(self):
+        if not self.create_command():
+            return False
+
+        # STDOUT is not empty
+        reply = self._get_raw_data()
+        if not reply:
+            self.error("no output from '{0}'. Is it running? Not enough privileges?".format(' '.join(self.command)))
+            return False
+
+        self.parser.init(reply)
+
+        # Output is parsable
+        if not self.parser.re_default:
+            self.error('cant parse the output...')
+            return False
+
+        return True
+
+    def get_data(self):
+        """
+        Format data received from shell command
+        :return: dict
+        """
+        raw = self._get_raw_data()
+        if not raw:
+            return None
+
+        data = dict()
+        server_stats = self.parser.server_stats(raw)
+        if not server_stats:
+            return None
+
+        stats = dict((param, value) for _, param, value in server_stats)
+        data.update(stats)
+
+        self.get_vbe_backends(data, raw)
+        self.get_storages(server_stats)
+
+        # varnish 5 uses default.g_bytes and default.g_space
+        data['memory_allocated'] = data.get('s0.g_bytes') or data.get('default.g_bytes')
+        data['memory_free'] = data.get('s0.g_space') or data.get('default.g_space')
+
+        return data
+
+    def get_vbe_backends(self, data, raw):
+        if not self.parser.re_backend:
+            return
+        stats = self.parser.backend_stats(raw)
+        if not stats:
+            return
+
+        for (name, param, value) in stats:
+            data['_'.join([name, param])] = value
+            if name in self.collected_vbe:
+                continue
+            self.collected_vbe.add(name)
+            self.add_backend_charts(name)
+
+    def get_storages(self, server_stats):
+        # Storage types:
+        #  - SMF: File Storage
+        #  - SMA: Malloc Storage
+        #  - MSE: Massive Storage Engine (Varnish-Plus only)
+        #
+        # Stats example:
+        #  [('SMF.', 'ssdStorage.c_req', '47686'),
+        #  ('SMF.', 'ssdStorage.c_fail', '0'),
+        #  ('SMF.', 'ssdStorage.c_bytes', '668102656'),
+        #  ('SMF.', 'ssdStorage.c_freed', '140980224'),
+        #  ('SMF.', 'ssdStorage.g_alloc', '39753'),
+        #  ('SMF.', 'ssdStorage.g_bytes', '527122432'),
+        #  ('SMF.', 'ssdStorage.g_space', '53159968768'),
+        #  ('SMF.', 'ssdStorage.g_smf', '40130'),
+        #  ('SMF.', 'ssdStorage.g_smf_frag', '311'),
+        #  ('SMF.', 'ssdStorage.g_smf_large', '66')]
+        storages = [name for typ, name, _ in server_stats if typ.startswith(('SMF', 'SMA', 'MSE')) and name.endswith('g_space')]
+        if not storages:
+            return
+        for storage in storages:
+            storage = storage.split('.')[0]
+            if storage in self.collected_storages:
+                continue
+            self.collected_storages.add(storage)
+            self.add_storage_charts(storage)
+
+    def add_backend_charts(self, backend_name):
+        self.add_charts(backend_name, backend_charts_template)
+
+    def add_storage_charts(self, storage_name):
+        self.add_charts(storage_name, storage_charts_template)
+
+    def add_charts(self, name, charts_template):
+        order, charts = charts_template(name)
+
+        for chart_name in order:
+            params = [chart_name] + charts[chart_name]['options']
+            dimensions = charts[chart_name]['lines']
+
+            new_chart = self.charts.add_chart(params)
+            for dimension in dimensions:
+                new_chart.add_dimension(dimension)
+
+
+def parse_varnish_version(lines):
+    m = re_version.search(lines[0])
+    if not m:
+        return None
+
+    m = m.groupdict()
+    return VarnishVersion(
+        int(m['major']),
+        int(m['minor']),
+        int(m['patch']),
+    )