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Implement :meth:`~publish_event` for controlling what the handler does with an event. c C s dS )zPublish an event.Nr ��self�eventr r r � publish_event" s z ReportingHandler.publish_eventc C s dS )z0Ensure ReportingHandler has published all eventsNr �r r r r �flush& s zReportingHandler.flushN)r r r �__doc__�abc�abstractmethodr r r r r r r s r )� metaclassc s* e Zd ZdZd� fdd� Zdd� Z� ZS )� LogHandlerzBPublishes events to the cloud-init log at the ``DEBUG`` log level.�DEBUGc s` t t| ��� t|t�rn<|}ztt|�� �}W n$ tyT t � d|� tj }Y n0 || _ d S )Nz invalid level '%s', using WARN) �superr �__init__� isinstance�int�getattr�logging�upper� Exception�LOG�warningZWARN�level)r r' Z input_level�� __class__r r r - s zLogHandler.__init__c C s2 t �d�dd|j|jg��}|�| j|�� � d S )N�.� cloudinitZ reporting)r" � getLogger�join� event_type�name�logr' � as_string)r r �loggerr r r r : s �zLogHandler.publish_event)r )r r r r r r � __classcell__r r r( r r * s r c @ s e Zd ZdZdd� ZdS )� PrintHandlerz Print the event as a string.c C s t |�� � d S �N)�printr1 r r r r r D s zPrintHandler.publish_eventN)r r r r r r r r r r4 A s r4 c s6 e Zd Zd � fdd� Zdd� Zdd� Zdd � Z� ZS ) �WebHookHandlerNc s� t t| ��� t||||g�r:tj||||d�}|j| _ntj| _|| _|| _|| _ t � � | _ t � | _t�� | _tj| jd�| _d| j_| j�� d S )N)� consumer_key� token_key� token_secret�consumer_secret��targetT)r r7 r �anyr ZOauthUrlHelper�readurl�endpoint�timeout�retriesr Zfetch_ssl_details� ssl_detailsr �flush_requested�queue�Queue� threading�Thread�process_requestsZevent_processor�daemon�start) r r@ r8 r9 r: r; rA rB Z oauth_helperr( r r r I s& � zWebHookHandler.__init__c C s� d}| j �� rD|dkrDt�d� | j�� s@| j�� | j�� q d}| jjdd�}z�z2| j |d |d |d |d |d d d � d}W n> t y� } z&t�d |d |� |d7 }W Y d }~n d }~0 0 W | j�� q| j�� 0 qd S ) Nr � zNMultiple consecutive failures in WebHookHandler. Cancelling all queued events.T��block� � � F)�datarA rB rC Z log_req_respz0Failed posting event: %s. This was caused by: %s) rD �is_setr% r& rE �emptyZ get_nowait� task_done�getr? r$ )r Zconsecutive_failed�args�er r r rI j s8 � �� z WebHookHandler.process_requestsc C s@ |� � }t�d| j|� | j�| jt�|�| j| j | j f� d S )Nz Queuing POST to %s, data: %s) Zas_dictr% �debugr@ rE �put�json�dumpsrA rB rC )r r Z event_datar r r r � s ���z WebHookHandler.publish_eventc C s, | j �� t�d� | j�� | j �� d S )Nz(WebHookHandler flushing remaining events)rD �setr% rY rE r- �clearr r r r r � s zWebHookHandler.flush)NNNNNN)r r r r rI r r r3 r r r( r r7 H s �!&r7 c s� e Zd ZdZdZdZdZee ZdZdZ dZ dZ d Z d Z d Ze d f� fd d� Zedd� �Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd d � Zeed d �d d!�Zd"d#� Zd$d%� Z d&d'� Z d(d)� Z � Z S )*�HyperVKvpReportingHandlera, Reports events to a Hyper-V host using Key-Value-Pair exchange protocol and can be used to obtain high level diagnostic information from the host. To use this facility, the KVP user-space daemon (hv_kvp_daemon) has to be running. It reads the kvp_file when the host requests the guest to enumerate the KVP's. This reporter collates all events for a module (origin|name) in a single json string in the dictionary. For more information, see https://technet.microsoft.com/en-us/library/dn798287.aspx#Linux%20guests i i i Z CLOUD_INIT�msg�resultZmsg_i)�,�:z/var/lib/hyperv/.kvp_pool_1FNc sr t t| ��� || _t�| j� || _t�� | _| � � | _ d� | j | j �| _ tj| jd�| _d| j_| j�� d S )Nz{0}|{1}r< T)r r_ r �_kvp_file_path�_truncate_guest_pool_file� _event_typesrE rF �q�_get_incarnation_noZincarnation_no�format� EVENT_PREFIX�event_key_prefixrG rH �_publish_event_routineZpublish_threadrJ rK )r Z kvp_file_pathZ event_typesr( r r r � s � ��z"HyperVKvpReportingHandler.__init__c C s� | j r dS t�� tt�� � }z~z>tj�|�|k r\t|d�� W d � n1 sR0 Y W n4 t t fy� } zt � d|� W Y d}~n d}~0 0 W d| _ nd| _ 0 dS )a Truncate the pool file if it has not been truncated since boot. This should be done exactly once for the file indicated by KVP_POOL_FILE_GUEST constant above. This method takes a filename so that we can use an arbitrary file during unit testing. Since KVP is a best-effort telemetry channel we only attempt to truncate the file once and only if the file has not been modified since boot. Additional truncation can lead to loss of existing KVPs. N�wz$failed to truncate kvp pool file, %sT) � _already_truncated_pool_file�time�floatr �uptime�os�path�getmtime�open�OSError�IOErrorr% r& )�clsZkvp_fileZ boot_timerX r r r re � s "$z3HyperVKvpReportingHandler._truncate_guest_pool_filec C sD t �� }ztt�� t|� �W S ty> t�d|� Y dS 0 dS )z� use the time passed as the incarnation number. the incarnation number is the number which are used to distinguish the old data stored in kvp and the new data. z"uptime '%s' not in correct format.r N)r rq r ro rp � ValueErrorr% r& )r Z uptime_strr r r rh � s z-HyperVKvpReportingHandler._get_incarnation_noc c s� t | jd��n}t�|tj� |�|� |�| j�}t|�| jkr^| � |�}|V |�| j�}q2t�|tj � W d � n1 s�0 Y dS )z-iterate the kvp file from the current offset.�rbN) ru rd �fcntl�flock�LOCK_EX�seek�read�HV_KVP_RECORD_SIZE�len�_decode_kvp_item�LOCK_UN)r �offset�f� record_dataZkvp_itemr r r � _iterate_kvps� s z'HyperVKvpReportingHandler._iterate_kvpsc C s d� | j|j|jt�� �S )z� the event key format is: CLOUD_INIT|<incarnation number>|<event_type>|<event_name>|<uuid> [|subevent_index] z{0}|{1}|{2}|{3})ri rk r. r/ �uuidZuuid4r r r r � _event_key s �z$HyperVKvpReportingHandler._event_keyc C s* t �d| j| jf |�d�|�d��}|S )Nz%ds%ds�utf-8)�struct�pack� HV_KVP_EXCHANGE_MAX_KEY_SIZE� HV_KVP_EXCHANGE_MAX_VALUE_SIZE�encode�r �key�valuerR r r r �_encode_kvp_item s ��� z*HyperVKvpReportingHandler._encode_kvp_itemc C sd t |�}|| jkr$td�|| j���|d| j� �d��d�}|| j| j� �d��d�}||d�S )Nz$record_data len not correct {0} {1}.r r� � )r� r� )r� r� r ri r� �decode�strip)r r� Zrecord_data_len�k�vr r r r� ! s, ����� ����z*HyperVKvpReportingHandler._decode_kvp_itemc C s� t �d| j� ���t t| jd��H}t�|tj� |D ]}|�|� q4|�� t�|tj � W d � n1 sn0 Y W d � n1 s�0 Y d S )Nz Appending �ab) r ZTimedrd ru r{ r| r} �writer r� )r r� r� rR r r r �_append_kvp_item8 s � z*HyperVKvpReportingHandler._append_kvp_itemc C s� || j = t�|�}|dt|�d � }d}g }d| j d }||| j< d|| j < tj|| jd�}| jt|� d } |�|dj| j |d | � d ��} d �||�} |� | � | | �� |d7 }|| d � }t|�dkr<q�q<|S ) NrO r �"z":""� �Z separators� z"{key}":"{desc}")r� Zdescz{}|{}) �MSG_KEYr[ r\ r� � DESC_IDX_KEY�JSON_SEPARATORS�HV_KVP_AZURE_MAX_VALUE_SIZE�replaceri �appendr� ) r r� � meta_data� descriptionZ des_in_json�iZ result_arrayZmessage_place_holderZdata_without_descZ room_for_descr� Zsubkeyr r r � _break_downB s4 ���� z%HyperVKvpReportingHandler._break_down)r� r� �returnc C sf t |�| jkr |d| jd � }| �||�g}z| �|� W n$ ttfy` t�d||� Y n0 dS )zJWrite KVP key-value. Values will be truncated as needed. r rO z failed posting kvp=%s value=%sN)r� r� r� r� rv rw r% r& r� r r r � write_key` s z#HyperVKvpReportingHandler.write_keyc C s� | � |�}|j|jt�|jtj��� d�}t || j �rB|j || j < |j || j < tj|| jd�}t|�| jkr|| �|||j �S | �||�}|gS dS )z� encode the event into kvp data bytes. if the event content reaches the maximum length of kvp value. then it would be cut to multiple slices. )r/ �type�tsr� N)r� r/ r. r Z fromtimestampZ timestampr ZutcZ isoformat�hasattr� RESULT_KEYra r� r� r[ r\ r� r� r� r� r� )r r r� r� r� rR r r r � _encode_evento s �� z'HyperVKvpReportingHandler._encode_eventc C s d}z�| j jdd�}|d7 }g }|d url|| �|�7 }z| j jdd�}|d7 }W q tjyh d }Y q 0 q z`z| �|� W n4 ttfy� } zt� d|� W Y d }~n d }~0 0 W t |�D ]}| j � � q�nt |�D ]}| j � � q�0 W q t �y Y d S 0 q d S )Nr TrM rO Fz failed posting events to kvp, %s) rg rV r� rE ZEmptyr� rv rw r% r& �rangerU �EOFError)r Zitems_from_queuer Z encoded_datarX �_r r r rl � s, $ � z0HyperVKvpReportingHandler._publish_event_routinec C s" | j r|j| j v r | j�|� d S r5 )rf r. rg rZ r r r r r � s z'HyperVKvpReportingHandler.publish_eventc C s t �d� | j�� d S )Nz0HyperVReportingHandler flushing remaining events)r% rY rg r- r r r r r � s z HyperVKvpReportingHandler.flush) r r r r r� r� r� r� rj r� r� r� r� ZKVP_POOL_FILE_GUESTrn r � classmethodre rh r� r� r� r� r� r� �strr� r� rl r r r3 r r r( r r_ � s8 � r_ r0 r6 ZwebhookZhyperv)#r r{ r[ r" rr rE r� rG ro r� r r r �typingr r+ r r r Zcloudinit.registryr r, r r% r$ r �ABCMetar r r4 r7 r_ Z HandlerTypeZavailable_handlersZ register_itemr r r r �<module> sH ` ��
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