🔗 功能：适应性日志记录

• 目标：记录 ICAP 和 eCAP 事务详情
• 状态：完成
• 版本: 3.1
• 开发者：AlexRousskov, Christos Tsantilas
• 更多:

🔗 详细信息

HTTP 事务有 access.log。ICAP 和 eCAP 事务需要自己的日志。此外，受适应性影响的 HTTP 事务可能需要在 access.log 中记录与适应性相关的详细信息。

ICAP 日志使用对 ICAP 事务有意义的logformat 代码。与标头相关的代码应用于嵌入 ICAP 服务器响应的 HTTP 标头，但有以下注意事项：对于 REQMOD，除非 ICAP 服务器执行了请求满足，否则没有 HTTP 响应标头。对于 RESPMOD，HTTP 请求标头是发送到 ICAP 服务器的标头。对于 OPTIONS，没有 HTTP 标头。

除了旧的logformat 代码外，以下格式代码也可用于 ICAP 日志

        <icap_A         ICAP server IP address. Similar to <A.

        <icap_service_name      ICAP service name from the icap_service
                        option in Squid configuration file.

        icap_ru         ICAP Request-URI. Similar to ru.

        icap_rm         ICAP request method (REQMOD, RESPMOD, or 
                        OPTIONS). Similar to existing rm.

        >icap_size      Bytes sent to the ICAP server (TCP payload
                        only; i.e., what Squid writes to the socket).

        <icap_size      Bytes received from the ICAP server (TCP
                        payload only; i.e., what Squid reads from
                        the socket).

        icap_tr         Transaction response time (in
                        milliseconds).  The timer starts when
                        the ICAP transaction is created and
                        stops when the transaction is completed.
                        Similar to tr.

        icap_tio        Transaction I/O time (in milliseconds). The
                        timer starts when the first ICAP request
                        byte is scheduled for sending. The timers
                        stops when the last byte of the ICAP response
                        is received.

        icap_to         Transaction outcome: ICAP_ERR* for all
                        transaction errors, ICAP_OPT for OPTION
                        transactions, ICAP_ECHO for 204
                        responses, ICAP_MOD for message
                        modification, and ICAP_SAT for request
                        satisfaction. Similar to Ss.

        icap_Hs         ICAP response status code. Similar to Hs.

        >icap_h         ICAP request header(s). Similar to >h.

        <icap_h         ICAP response header(s). Similar to <h.Adaptation log fields include:

如果启用了 ICAP，则以下两个代码可用于 access.log

        icap_total_time Total ICAP processing time for the HTTP
                        transaction. The timer ticks when ICAP
                        ACLs are checked and when ICAP
                        transaction is in progress.

        <icap_last_h    The header of the last ICAP response
                        related to the HTTP transaction. Like
                        <h, accepts an optional header name
                        argument.  Will not change semantics
                        when multiple ICAP transactions per HTTP
                        transaction are supported.

        adaptation_xact_times  A comma-separated list of individual
                        related adaptation transactions response times,
                        in milliseconds. The order is to be defined
                        during implementation.

请参阅squid.conf.documented 获取更多详细信息。

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