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o ���c� � @ s� d dl mZ d dlZd dlZd dlmZmZ G dd� de�ZG dd� de�Z G dd � d e �Z G d d � d e �Z G d d � d e �Z dS )� )�absolute_importN)� format_delta�format_percentc @ s: e Zd ZdZd dd�Zdd� Zdd� Zd d � Zd d � ZdS )�Timerzp A timer keeps track of the number of seconds passed during it's lifetime and since the last reset. Nc C s" |pt j | _| �� | _| j| _d S �N)�time� _create_time�_creation_time� _last_time)�self� create_time� r �7/usr/lib/python3/dist-packages/landscape/lib/monitor.py�__init__ s zTimer.__init__c C s | � � S r )r �r r r r r s z Timer.timec C � | � � | j S r )r r r r r r � since_start � zTimer.since_startc C r r �r r r r r r � since_reset r zTimer.since_resetc C s | � � | _d S r r r r r r �reset r z Timer.resetr ) �__name__� __module__� __qualname__�__doc__r r r r r r r r r r s r c s> e Zd ZdZd � fdd� Zdd� Z� fdd�Zd d � Z� ZS ) �Monitora� A monitor tracks the number of pings it received during it's lifetime and since the last reset. The component being monitored is responsible for calling C{ping()} everytime a monitored activity occurs. It should register a reactor event that logs statistics from this monitor every N seconds. Essentially, monitors are just statistics checkers that components can use to monitor themselves. Nc s( t t| �j|d� || _d| _d| _d S )N�r r )�superr r � event_name�count� total_count)r r r �� __class__r r r , s zMonitor.__init__c C s | j d7 _ | jd7 _d S )N� )r r r r r r �ping2 s z Monitor.pingc s t t| ��� d| _d S )Nr )r r r r r r! r r r 6 s z Monitor.resetc C s( t �d| j| jt| �� �� | �� d S )Nz%%d %s events occurred in the last %s.)�logging�infor r r r r r r r r �log: s � z Monitor.logr ) r r r r r r$ r r' � __classcell__r r r! r r ! s r c s8 e Zd ZdZ d � fdd� Z� fdd�Zdd� Z� ZS ) � BurstMonitorz� A burst monitor tracks the volume pings it receives. It goes into warn mode when too many pings are received in a short period of time. Nc s* t t| �j||d� || _|| _g | _d S �Nr )r r) r �repeat_interval� maximum_count� _last_times)r r+ r, r r r! r r r G s zBurstMonitor.__init__c s^ t t| ��� | �� }| j�|� | jd | | jks%t| j�| jd kr-| j� d� d S d S )Nr r# ) r r) r$ r r- �appendr+ �lenr, �pop)r �nowr! r r r$ N s �zBurstMonitor.pingc C s: | j sdS | �� | j d }|| jk o t| j �| jd kS )NFr r# )r- r r+ r/ r, )r �deltar r r �warnW s �zBurstMonitor.warnr )r r r r r r$ r3 r( r r r! r r) @ s � r) c sL e Zd ZdZ d � fdd� Zedd� �Zedd� �Zd d � Zd d � Z � Z S )�CoverageMonitora� A coverage monitor tracks the volume of pings received since the last reset. It has normal and warn states that are determined by calculating the number of expected pings since the last reset. If the actual number of pings falls below the minimum required percent the monitor goes into warn mode. The component being monitored should register a reactor event that logs statistics from this monitor every N seconds. Nc s$ t t| �j||d� || _|| _d S r* )r r4 r r+ � min_percent)r r+ r5 r r r! r r r j s � zCoverageMonitor.__init__c C s( z | j t| j� W S ty Y dS w )Ng �?)r �float�expected_count�ZeroDivisionErrorr r r r �percentq s �zCoverageMonitor.percentc C s t | �� | j �S r )�intr r+ r r r r r7 x s z CoverageMonitor.expected_countc C s^ d}| j r | jr | j d }tj}| �� rtj}|d| j| j| jt|�t | � � �� | � � d S )Ng �d z9%d of %d expected %s events (%s) occurred in the last %s.) r9 r7 r% r& r3 �warningr r r r r r )r r9 r' r r r r' | s � zCoverageMonitor.logc C s* | j r| jr| js dS | j| jk rdS dS )NFT)r+ r5 r7 r9 r r r r r3 � s zCoverageMonitor.warnr ) r r r r r �propertyr9 r7 r' r3 r( r r r! r r4 _ s � r4 c sL e Zd ZdZ d � fdd� Zedd� �Z� fdd�Zd d � Zd d � Z � Z S )�FrequencyMonitoraz A frequency monitor tracks the number of pings received during a fixed period of time. It has normal and warn states; a warn state is triggered when the minimum expected pings were not received during the specified interval. The component being monitored should register a reactor event that checks the warn state of this monitor every N seconds. Nc s. t t| �j||d� || _|| _| �� | _d S r* )r r> r r+ � min_frequencyr � _last_count)r r+ r? r r r! r r r � s �zFrequencyMonitor.__init__c C s | � � | j }|| j S r )r r@ r+ )r � since_pingr r r r7 � s z FrequencyMonitor.expected_countc s t t| ��� | �� | _d S r )r r> r$ r r@ r r! r r r$ � s zFrequencyMonitor.pingc C s2 | � � rt�d| j| j| jt| j�� | �� d S )NzAOnly %d of %d minimum expected %s events occurred in the last %s.) r3 r% r< r r7 r r r+ r r r r r r' � s � zFrequencyMonitor.logc C s4 | j r| jr| �� | j | j kr| j| jk rdS dS )NTF)r+ r? r r@ r r r r r r3 � s � zFrequencyMonitor.warnr ) r r r r r r= r7 r$ r' r3 r( r r r! r r> � s � r> ) � __future__r r% r �landscape.lib.formatr r �objectr r r) r4 r> r r r r �<module> s 4
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