LogTags.h

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_SRC_LOGTAGS_H
#define SQUID_SRC_LOGTAGS_H
 
#include "CollapsingHistory.h"
 
class LogTagsErrors
{
public:
    static LogTagsErrors FromErrno(int errNo);
 
    void update(const LogTagsErrors &other);
 
    bool ignored = false; 
    bool timedout = false; 
    bool aborted = false;  
};
 
typedef enum {
    LOG_TAG_NONE = 0,
    LOG_TCP_HIT,
    LOG_TCP_MISS,
    LOG_TCP_REFRESH_UNMODIFIED, // refresh from origin revalidated existing entry
    LOG_TCP_REFRESH_FAIL_OLD,   // refresh from origin failed, stale reply sent
    LOG_TCP_REFRESH_FAIL_ERR,   // refresh from origin failed, error forwarded
    LOG_TCP_REFRESH_MODIFIED,   // refresh from origin replaced existing entry
    LOG_TCP_REFRESH,            // refresh from origin started, but still pending
    LOG_TCP_CLIENT_REFRESH_MISS,
    LOG_TCP_IMS_HIT,
    LOG_TCP_INM_HIT,
    LOG_TCP_SWAPFAIL_MISS,
    LOG_TCP_NEGATIVE_HIT,
    LOG_TCP_MEM_HIT,
    LOG_TCP_DENIED,
    LOG_TCP_DENIED_REPLY,
    LOG_TCP_OFFLINE_HIT,
    LOG_TCP_REDIRECT,
    LOG_TCP_TUNNEL, 
    LOG_UDP_HIT,
    LOG_UDP_MISS,
    LOG_UDP_DENIED,
    LOG_UDP_INVALID,
    LOG_UDP_MISS_NOFETCH,
    LOG_ICP_QUERY,
    LOG_TYPE_MAX
} LogTags_ot;
 
class LogTags
{
public:
    LogTags() = default;
    explicit LogTags(const LogTags_ot t) { update(t); }
 
    void update(const LogTags_ot t);
 
    const char *c_str() const;
 
    bool isTcpHit() const;
 
    const char *cacheStatusSource() const;
 
    LogTagsErrors err;
 
private:
    static const char *Str_[];
 
public: // XXX: only until client_db.cc stats are redesigned.
 
    LogTags_ot oldType = LOG_TAG_NONE;
    CollapsingHistory collapsingHistory;
};
 
inline LogTags_ot &operator++ (LogTags_ot &aLogType)
{
    int tmp = (int)aLogType;
    aLogType = (LogTags_ot)(++tmp);
    return aLogType;
}
 
#endif /* SQUID_SRC_LOGTAGS_H */