add exec action

python/supervisor_healthCheck.py

@@ -17,6 +17,7 @@ import smtplib
 import datetime
 import platform
 import threading
+import subprocess
 from xmlrpclib import ServerProxy, Fault
 from email.header import Header
 from email.mime.text import MIMEText
@@ -27,7 +28,6 @@ try:
 except ImportError:
     import http.client as httplib
 
-
 PY2 = sys.version_info[0] == 2
 PY3 = sys.version_info[0] == 3
 
@@ -51,10 +51,18 @@ def shell(cmd):
     """
     执行系统命令
     :param cmd:
-    :return:
+    :return: (exitcode, stdout, stderr)
     """
-    with os.popen(cmd) as f:
-        return f.read()
+    # with os.popen(cmd) as f:
+    #     return f.read()
+    env_to_pass = dict(os.environ)
+    proc = subprocess.Popen(cmd,
+                            shell=True,
+                            stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE,
+                            env=env_to_pass)
+    proc.wait()
+    return (proc.returncode,) + proc.communicate()
 
 
 def get_proc_cpu(pid):
@@ -65,12 +73,12 @@ def get_proc_cpu(pid):
     """
     pscommand = 'ps -opcpu= -p %s'
 
-    data = shell(pscommand % pid)
+    _, data, _ = shell(pscommand % pid)
     if not data:
         # 未获取到数据值，或者没有此pid信息
         return None
     try:
-        cpu_utilization = data.lstrip().rstrip()
+        cpu_utilization = data.strip()
         cpu_utilization = float(cpu_utilization)
     except ValueError:
         # 获取的结果不包含数据，或者无法识别cpu_utilization
@@ -101,7 +109,7 @@ def get_proc_rss(pid, cumulative=False):
 
     if cumulative:
         # 统计进程的子进程rss
-        data = shell(pstreecommand)
+        _, data, _ = shell(pstreecommand)
         data = data.strip()
 
         procs = []
@@ -120,12 +128,12 @@ def get_proc_rss(pid, cumulative=False):
             return None
 
     else:
-        data = shell(pscommand % pid)
+        _, data, _ = shell(pscommand % pid)
         if not data:
             # 未获取到数据值，或者没有此pid信息
             return None
         try:
-            rss = data.lstrip().rstrip()
+            rss = data.strip()
             rss = int(rss)
         except ValueError:
             # 获取的结果不包含数据，或者无法识别rss
@@ -149,7 +157,7 @@ class HealthCheck(object):
         if 'config' in config:
             self.mail_config = config['config'].get('mail')
             self.wechat_config = config['config'].get('wechat')
-            self.supervisor_url = config['config'].get('supervistor_url', self.supervisor_url)
+            self.supervisor_url = config['config'].get('supervistorUrl', self.supervisor_url)
             config.pop('config')
 
         self.program_config = config
@@ -163,6 +171,51 @@ class HealthCheck(object):
         self.cumulative = False
         self.max_cpu = 90
 
+    def get_pid(self, program, kind, pid_file):
+        """
+        获取进程pid
+        :param program:
+        :param kind:
+        :param args:
+        :return:
+        """
+        pid = 0
+        err = ''
+
+        if kind == 'supervisor':
+            try:
+                s = ServerProxy(self.supervisor_url)
+                info = s.supervisor.getProcessInfo(program)
+                pid = info.get('pid')
+                err = info.get('description')
+            except Exception as e:
+                self.log(program, "PID: Can't get pid from supervisor %s ", e)
+        elif kind == 'name':
+            pscommand = "ps -A -o pid,cmd |grep '[%s]%s' | awk '{print $1}' | head -1"
+            exitcode, stdout, stderr = shell(pscommand % (program[0], program[1:]))
+            if exitcode == 0:
+                pid = stdout.strip()
+            else:
+                self.log(program, "PID: Can't get pid from name %s ", stderr)
+                pid = 0
+                err = stderr
+
+        elif kind == 'file':
+            if pid_file:
+                try:
+                    with open(pid_file) as f:
+                        pid = f.read().strip()
+                except Exception as e:
+                    self.log(program, "PID: Can't get pid from file %s ", e)
+                    err = "Can't get pid from file"
+            else:
+                err = "PID: pid file not set"
+		self.log(program, err)
+        if not pid:
+            pid = 0
+
+        return pid, err
+
     def log(self, program, msg, *args):
         """
         写信息到 STDERR.
@@ -189,6 +242,7 @@ class HealthCheck(object):
         successThreshold = config.get('successThreshold', self.successThreshold)
         initialDelaySeconds = config.get('initialDelaySeconds', self.initialDelaySeconds)
         action_type = config.get('action', 'restart')
+        action_exec_cmd = config.get('execCmd')
 
         check_type = config.get('type', 'HTTP').lower()
         check_method = self.http_check
@@ -234,9 +288,13 @@ class HealthCheck(object):
                 if check_state[program]['failure'] >= failureThreshold:
                     # 失败后, 只触发一次action，或者检测错误数是2倍periodSeconds的平方数时触发(避免重启失败导致服务一直不可用)
                     if not check_state[program]['action'] or (
-                            check_state[program]['failure'] != 0 and check_state[program][
-                        'failure'] % (periodSeconds * 2) == 0):
-                        self.action(program, action_type, check_result.get('msg', ''))
+                            check_state[program]['failure'] != 0 and check_state[program]['failure'] % (periodSeconds * 2) == 0):
+                        action_param = {
+			    'action_type': action_type,
+                            'check_result': check_result.get('msg', ''),
+                            'action_exec_cmd': action_exec_cmd
+			}
+                        self.action(program, **action_param)
                         check_state[program]['action'] = True
 
                 # 间隔时间清0
@@ -333,25 +391,23 @@ class HealthCheck(object):
         :return: dict
         """
         program = config.get('program')
-        max_rss = config.get('max_rss', self.max_rss)
+        max_rss = config.get('maxRss', self.max_rss)
         cumulative = config.get('cumulative', self.cumulative)
+        pid_get = config.get('pidGet', 'supervisor')
+        pid_file = config.get('pidFile', )
         check_info = 'max_rss:%sMB cumulative:%s' % (max_rss, cumulative)
 
-        try:
-            s = ServerProxy(self.supervisor_url)
-            info = s.supervisor.getProcessInfo(program)
-            pid = info.get('pid')
+        pid, err = self.get_pid(program, pid_get, pid_file)
         if pid == 0:
             self.log(program, 'MEM: check error, program not starting')
             return {'status': 'failure',
-                        'msg': '[mem_check] program not starting, message: %s' % (info.get('description')),'info': check_info}
+                    'msg': '[mem_check] program not starting, message: %s' % err,
+                    'info': check_info}
         now_rss = get_proc_rss(pid, cumulative)
-            check_info = '%s now_rss:%sMB' % (check_info, now_rss)
+        check_info = '%s now_rss:%sMB pid:%s' % (check_info, now_rss, pid)
         if now_rss >= int(max_rss):
-                return {'status': 'failure', 'msg': '[mem_check] max_rss(%sMB) now_rss(%sMB)' % (max_rss, now_rss), 'info': check_info}
-        except Exception as e:
-            self.log(program, 'MEM: check error, %s', e)
-            return {'status': 'failure', 'msg': '[mem_check] %s' % e,'info': check_info}
+            return {'status': 'failure', 'msg': '[mem_check] max_rss(%sMB) now_rss(%sMB)' % (max_rss, now_rss),
+                    'info': check_info}
 
         return {'status': 'success', 'info': check_info}
 
@@ -362,28 +418,27 @@ class HealthCheck(object):
         :return: dict
         """
         program = config.get('program')
-        max_cpu = config.get('max_cpu', self.max_cpu)
+        max_cpu = config.get('maxCpu', self.max_cpu)
+        pid_get = config.get('pidGet', 'supervisor')
+        pid_file = config.get('pidFile', )
         check_info = 'max_cpu:{cpu}%'.format(cpu=max_cpu)
 
-        try:
-            s = ServerProxy(self.supervisor_url)
-            info = s.supervisor.getProcessInfo(program)
-            pid = info.get('pid')
+        pid, err = self.get_pid(program, pid_get, pid_file)
         if pid == 0:
             self.log(program, 'CPU: check error, program not starting')
             return {'status': 'failure',
-                        'msg': '[cpu_check] program not starting, message: %s' % (info.get('description')),'info': check_info}
+                    'msg': '[cpu_check] program not starting, message: %s' % err,
+                    'info': check_info}
         now_cpu = get_proc_cpu(pid)
-            check_info = '{info} now_cpu:{now}%'.format(info=check_info, now=now_cpu)
+        check_info = '{info} now_cpu:{now}% pid:{pid}'.format(info=check_info, now=now_cpu, pid=pid)
         if now_cpu >= int(max_cpu):
-                return {'status': 'failure', 'msg': '[cpu_check] max_cpu({max_cpu}%) now_cpu({now}%)'.format(max_cpu=max_cpu, now=now_cpu),'info': check_info}
-        except Exception as e:
-            self.log(program, 'CPU: check error, %s', e)
-            return {'status': 'failure', 'msg': '[cpu_check] %s' % e,'info': check_info}
+            return {'status': 'failure',
+                    'msg': '[cpu_check] max_cpu({max_cpu}%) now_cpu({now}%)'.format(max_cpu=max_cpu, now=now_cpu),
+                    'info': check_info}
 
         return {'status': 'success', 'info': check_info}
 
-    def action(self, program, action_type, error):
+    def action(self, program, **args):
         """
         执行动作
         :param program:
@@ -391,15 +446,24 @@ class HealthCheck(object):
         :param error:
         :return:
         """
+        action_type = args.get('action_type')
+        check_result = args.get('check_result')
+        action_exec_cmd = args.get('action_exec_cmd')
+
         self.log(program, 'Action: %s', action_type)
         action_list = action_type.split(',')
+
         if 'restart' in action_list:
             restart_result = self.action_supervistor_restart(program)
-            error += '\r\n Restart：%s' % restart_result
+            check_result += '\r\n Restart：%s' % restart_result
+        elif 'exec' in action_list:
+            exec_result = self.action_exec(program, action_exec_cmd)
+            check_result += '\r\n Exec：%s' % exec_result
+
         if 'email' in action_list and self.mail_config:
-            self.action_email(program, action_type, error)
+            self.action_email(program, action_type, check_result)
         if 'wechat' in action_list and self.wechat_config:
-            self.action_wechat(program, action_type, error)
+            self.action_wechat(program, action_type, check_result)
 
     def action_supervistor_restart(self, program):
         """
@@ -442,6 +506,26 @@ class HealthCheck(object):
 
         return result
 
+    def action_exec(self, program, cmd):
+        """
+        执行系统命令
+        :param program:
+        :param exec:
+        :return:
+        """
+        self.log(program, 'Action: exec')
+        result = 'success'
+
+        exitcode, stdout, stderr = shell(cmd)
+
+        if exitcode == 0:
+	    self.log(program, "Action: exec result success")
+        else:
+            result = 'Failed to exec %s, exiting: %s' % (program, exitcode)
+            self.log(program, "Action: exec result %s", result)
+
+        return result
+
     def action_email(self, program, action_type, msg):
         """
         发送email
@@ -616,7 +700,7 @@ if __name__ == '__main__':
     if not os.path.exists(config_file):
         example_config = """
 config:                                          # 脚本配置名称,请勿更改
-  supervisord_url: http://localhost:9001/RPC2    # supervisor的rpc接口地址
+  supervisordUrl: http://localhost:9001/RPC2     # supervisor的rpc接口地址
 #  mail:                                         # stmp配置
 #    host: 'smtp.test.com'
 #    port': '465'
@@ -631,25 +715,34 @@ config:                                          # 脚本配置名称,请勿更
 #    toparty: 
 #    totag: 
 
+# 内存方式监控
 cat1:                     # supervisor中配置的program名称
   type: mem               # 检查类型: http,tcp,mem,cpu  默认: http
-  max_rss: 1024           # 单位MB, 默认: 1024
+  maxRss: 1024            # 内存阈值, 超过则为检测失败. 单位MB, 默认: 1024
   cumulative: True        # 是否统计子进程的内存, 默认: False
+  pidGet: supervistor     # 获取pid的方式: supervistor,name,file, 选择name时,按program名称搜索pid,选择file时,需指定pidFile 默认: supervistor
+  pidFile: /var/run/t.pid # 指定pid文件的路径, 只在pidGet为file的时候有用
   periodSeconds: 10       # 检查的频率(以秒为单位), 默认: 5
   initialDelaySeconds: 10 # 首次检查等待的时间(以秒为单位), 默认: 1
   failureThreshold: 3     # 检查成功后，最少连续检查失败多少次才被认定为失败, 默认: 3
   successThreshold: 2     # 失败后检查成功的最小连续成功次数, 默认：1
-  action: restart,email   # 触发的动作: restart,email,wechat 默认: restart
+  action: restart,email   # 触发的动作: restart,exec,email,wechat (restart和exec互斥,同时设置时restart生效) 默认: restart
+  execCmd: command        # action exec 的执行命令 
 
+# cpu方式监控
 cat2:                     # supervisor中配置的program名称
   type: cpu               # 检查类型: http,tcp,mem,cpu 默认: http
-  max_cpu: 80             # cpu使用百分比,单位% 默认: 90%
+  maxCpu: 80              # CPU阈值, 超过则为检测失败. 单位% 默认: 90%
+  pidGet: supervistor     # 获取pid的方式: supervistor,name,file, 选择name时,按program名称搜索pid,选择file时,需指定pidFile 默认: supervistor
+  pidFile: /var/run/t.pid # 指定pid文件的路径, 只在pidGet为file的时候有用
   periodSeconds: 10       # 检查的频率(以秒为单位), 默认: 5
   initialDelaySeconds: 10 # 首次检查等待的时间(以秒为单位), 默认: 1
   failureThreshold: 3     # 检查成功后，最少连续检查失败多少次才被认定为失败, 默认: 3
   successThreshold: 2     # 失败后检查成功的最小连续成功次数, 默认：1
-  action: restart,wechat  # 触发的动作: restart,email,wechat 默认: restart
+  action: restart,email   # 触发的动作: restart,exec,email,wechat (restart和exec互斥,同时设置时restart生效) 默认: restart
+  execCmd: command        # action exec 的执行命令 
 
+# HTTP方式监控
 cat3:
   type: HTTP
   mode: POST              # http动作：POST,GET 默认: GET
@@ -665,7 +758,10 @@ cat3:
   timeoutSeconds: 5       # 检查超时的秒数, 默认: 3
   failureThreshold: 3     # 检查成功后，最少连续检查失败多少次才被认定为失败, 默认: 3
   successThreshold: 2     # 失败后检查成功的最小连续成功次数, 默认：1
-  action: restart,email   # 触发的动作: restart,email,wechat 默认: restart
+  action: restart,email   # 触发的动作: restart,exec,email,wechat (restart和exec互斥,同时设置时restart生效) 默认: restart
+  execCmd: command        # action exec 的执行命令 
+
+# TCP方式监控
 cat4:
   type: TCP
   host: 127.0.0.1         # 主机地址, 默认: localhost
@@ -675,7 +771,8 @@ cat4:
   timeoutSeconds: 5       # 检查超时的秒数, 默认: 3
   failureThreshold: 3     # 检查成功后，最少连续检查失败多少次才被认定为失败, 默认: 3
   successThreshold: 2     # 失败后检查成功的最小连续成功次数, 默认：1
-  action: restart,email   # 触发的动作: restart,email,wechat 默认: restart
+  action: restart,email   # 触发的动作: restart,exec,email,wechat (restart和exec互斥,同时设置时restart生效) 默认: restart
+  execCmd: command        # action exec 的执行命令 
 """
         with open(config_file, 'w') as f:
             f.write(example_config)