11 files changed, 0 insertions, 899 deletions

diff --git a/database/engine/metadata_log/Makefile.am b/database/engine/metadata_log/Makefile.am
deleted file mode 100644
index 161784b8f..000000000
--- a/database/engine/metadata_log/Makefile.am
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-AUTOMAKE_OPTIONS = subdir-objects
-MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-
-dist_noinst_DATA = \
-    README.md \
-    $(NULL)
diff --git a/database/engine/metadata_log/compaction.c b/database/engine/metadata_log/compaction.c
deleted file mode 100644
index ba19e1edf..000000000
--- a/database/engine/metadata_log/compaction.c
+++ /dev/null
@@ -1,86 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#define NETDATA_RRD_INTERNALS
-
-#include "metadatalog.h"
-
-/* Return 0 on success. */
-int compaction_failure_recovery(struct metalog_instance *ctx, struct metadata_logfile **metalogfiles,
-                                 unsigned *matched_files)
-{
-    int ret;
-    unsigned starting_fileno, fileno, i, j, recovered_files;
-    struct metadata_logfile *metalogfile = NULL, *compactionfile = NULL, **tmp_metalogfiles;
-    char *dbfiles_path = ctx->rrdeng_ctx->dbfiles_path;
-
-    for (i = 0 ; i < *matched_files ; ++i) {
-        metalogfile = metalogfiles[i];
-        if (0 == metalogfile->starting_fileno)
-            continue; /* skip standard metadata log files */
-        break; /* this is a compaction temporary file */
-    }
-    if (i == *matched_files) /* no recovery needed */
-        return 0;
-    info("Starting metadata log file failure recovery procedure in \"%s\".", dbfiles_path);
-
-    if (*matched_files - i > 1) { /* Can't have more than 1 temporary compaction files */
-        error("Metadata log files are in an invalid state. Cannot proceed.");
-        return 1;
-    }
-    compactionfile = metalogfile;
-    starting_fileno = compactionfile->starting_fileno;
-    fileno = compactionfile->fileno;
-    /* scratchpad space to move file pointers around */
-    tmp_metalogfiles = callocz(*matched_files, sizeof(*tmp_metalogfiles));
-
-    for (j = 0, recovered_files = 0 ; j < i ; ++j) {
-        metalogfile = metalogfiles[j];
-        fatal_assert(0 == metalogfile->starting_fileno);
-        if (metalogfile->fileno < starting_fileno) {
-            tmp_metalogfiles[recovered_files++] = metalogfile;
-            continue;
-        }
-        break; /* reached compaction file serial number */
-    }
-
-    if ((j == i) /* Shouldn't be possible, invalid compaction temporary file */ ||
-        (metalogfile->fileno == starting_fileno && metalogfile->fileno == fileno)) {
-        error("Deleting invalid compaction temporary file \"%s/"METALOG_PREFIX METALOG_FILE_NUMBER_PRINT_TMPL
-              METALOG_EXTENSION"\"", dbfiles_path, starting_fileno, fileno);
-        unlink_metadata_logfile(compactionfile);
-        freez(compactionfile);
-        freez(tmp_metalogfiles);
-        --*matched_files; /* delete the last one */
-
-        info("Finished metadata log file failure recovery procedure in \"%s\".", dbfiles_path);
-        return 0;
-    }
-
-    for ( ; j < i ; ++j) { /* continue iterating through normal metadata log files */
-        metalogfile = metalogfiles[j];
-        fatal_assert(0 == metalogfile->starting_fileno);
-        if (metalogfile->fileno < fileno) { /* It has already been compacted */
-            error("Deleting invalid metadata log file \"%s/"METALOG_PREFIX METALOG_FILE_NUMBER_PRINT_TMPL
-                      METALOG_EXTENSION"\"", dbfiles_path, 0U, metalogfile->fileno);
-            unlink_metadata_logfile(metalogfile);
-            freez(metalogfile);
-            continue;
-        }
-        tmp_metalogfiles[recovered_files++] = metalogfile;
-    }
-
-    /* compaction temporary file is valid */
-    tmp_metalogfiles[recovered_files++] = compactionfile;
-    ret = rename_metadata_logfile(compactionfile, 0, starting_fileno);
-    if (ret < 0) {
-        error("Cannot rename temporary compaction files. Cannot proceed.");
-        freez(tmp_metalogfiles);
-        return 1;
-    }
-
-    memcpy(metalogfiles, tmp_metalogfiles, recovered_files * sizeof(*metalogfiles));
-    *matched_files = recovered_files;
-    freez(tmp_metalogfiles);
-
-    info("Finished metadata log file failure recovery procedure in \"%s\".", dbfiles_path);
-    return 0;
-}
diff --git a/database/engine/metadata_log/compaction.h b/database/engine/metadata_log/compaction.h
deleted file mode 100644
index d04613440..000000000
--- a/database/engine/metadata_log/compaction.h
+++ /dev/null
@@ -1,14 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_COMPACTION_H
-#define NETDATA_COMPACTION_H
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-#include "../rrdengine.h"
-
-extern int compaction_failure_recovery(struct metalog_instance *ctx, struct metadata_logfile **metalogfiles,
-                                       unsigned *matched_files);
-
-#endif /* NETDATA_COMPACTION_H */
diff --git a/database/engine/metadata_log/logfile.c b/database/engine/metadata_log/logfile.c
deleted file mode 100644
index 07eb9b6fe..000000000
--- a/database/engine/metadata_log/logfile.c
+++ /dev/null
@@ -1,447 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#include <database/sqlite/sqlite_functions.h>
-#include "metadatalog.h"
-#include "metalogpluginsd.h"
-
-
-void generate_metadata_logfile_path(struct metadata_logfile *metalogfile, char *str, size_t maxlen)
-{
-    (void) snprintfz(str, maxlen, "%s/" METALOG_PREFIX METALOG_FILE_NUMBER_PRINT_TMPL METALOG_EXTENSION,
-                    metalogfile->ctx->rrdeng_ctx->dbfiles_path, metalogfile->starting_fileno, metalogfile->fileno);
-}
-
-void metadata_logfile_init(struct metadata_logfile *metalogfile, struct metalog_instance *ctx, unsigned starting_fileno,
-                           unsigned fileno)
-{
-    metalogfile->starting_fileno = starting_fileno;
-    metalogfile->fileno = fileno;
-    metalogfile->file = (uv_file)0;
-    metalogfile->pos = 0;
-    metalogfile->next = NULL;
-    metalogfile->ctx = ctx;
-}
-
-int rename_metadata_logfile(struct metadata_logfile *metalogfile, unsigned new_starting_fileno, unsigned new_fileno)
-{
-    //struct metalog_instance *ctx = metalogfile->ctx;
-    uv_fs_t req;
-    int ret;
-    char oldpath[RRDENG_PATH_MAX], newpath[RRDENG_PATH_MAX];
-    unsigned backup_starting_fileno, backup_fileno;
-
-    backup_starting_fileno = metalogfile->starting_fileno;
-    backup_fileno = metalogfile->fileno;
-    generate_metadata_logfile_path(metalogfile, oldpath, sizeof(oldpath));
-    metalogfile->starting_fileno = new_starting_fileno;
-    metalogfile->fileno = new_fileno;
-    generate_metadata_logfile_path(metalogfile, newpath, sizeof(newpath));
-
-    info("Renaming metadata log file \"%s\" to \"%s\".", oldpath, newpath);
-    ret = uv_fs_rename(NULL, &req, oldpath, newpath, NULL);
-    if (ret < 0) {
-        error("uv_fs_rename(%s): %s", oldpath, uv_strerror(ret));
-        //++ctx->stats.fs_errors; /* this is racy, may miss some errors */
-        rrd_stat_atomic_add(&global_fs_errors, 1);
-        /* restore previous values */
-        metalogfile->starting_fileno = backup_starting_fileno;
-        metalogfile->fileno = backup_fileno;
-    }
-    uv_fs_req_cleanup(&req);
-
-    return ret;
-}
-
-int unlink_metadata_logfile(struct metadata_logfile *metalogfile)
-{
-    //struct metalog_instance *ctx = metalogfile->ctx;
-    uv_fs_t req;
-    int ret;
-    char path[RRDENG_PATH_MAX];
-
-    generate_metadata_logfile_path(metalogfile, path, sizeof(path));
-
-    ret = uv_fs_unlink(NULL, &req, path, NULL);
-    if (ret < 0) {
-        error("uv_fs_fsunlink(%s): %s", path, uv_strerror(ret));
-//        ++ctx->stats.fs_errors;
-        rrd_stat_atomic_add(&global_fs_errors, 1);
-    }
-    uv_fs_req_cleanup(&req);
-
-    return ret;
-}
-
-static int check_metadata_logfile_superblock(uv_file file)
-{
-    int ret;
-    struct rrdeng_metalog_sb *superblock;
-    uv_buf_t iov;
-    uv_fs_t req;
-
-    ret = posix_memalign((void *)&superblock, RRDFILE_ALIGNMENT, sizeof(*superblock));
-    if (unlikely(ret)) {
-        fatal("posix_memalign:%s", strerror(ret));
-    }
-    iov = uv_buf_init((void *)superblock, sizeof(*superblock));
-
-    ret = uv_fs_read(NULL, &req, file, &iov, 1, 0, NULL);
-    if (ret < 0) {
-        error("uv_fs_read: %s", uv_strerror(ret));
-        uv_fs_req_cleanup(&req);
-        goto error;
-    }
-    fatal_assert(req.result >= 0);
-    uv_fs_req_cleanup(&req);
-
-    if (strncmp(superblock->magic_number, RRDENG_METALOG_MAGIC, RRDENG_MAGIC_SZ)) {
-        error("File has invalid superblock.");
-        ret = UV_EINVAL;
-    } else {
-        ret = 0;
-    }
-    if (superblock->version > RRDENG_METALOG_VER) {
-        error("File has unknown version %"PRIu16". Compatibility is not guaranteed.", superblock->version);
-    }
-error:
-    free(superblock);
-    return ret;
-}
-
-void replay_record(struct metadata_logfile *metalogfile, struct rrdeng_metalog_record_header *header, void *payload)
-{
-    struct metalog_instance *ctx = metalogfile->ctx;
-    char *line, *nextline, *record_end;
-    int ret;
-
-    debug(D_METADATALOG, "RECORD contents: %.*s", (int)header->payload_length, (char *)payload);
-    record_end = (char *)payload + header->payload_length - 1;
-    *record_end = '\0';
-
-    for (line = payload ; line ; line = nextline) {
-        nextline = strchr(line, '\n');
-        if (nextline) {
-            *nextline++ = '\0';
-        }
-        ret = parser_action(ctx->metalog_parser_object->parser, line);
-        debug(D_METADATALOG, "parser_action ret:%d", ret);
-        if (ret)
-            return; /* skip record due to error */
-    };
-}
-
-/* This function only works with buffered I/O */
-static inline int metalogfile_read(struct metadata_logfile *metalogfile, void *buf, size_t len, uint64_t offset)
-{
-//    struct metalog_instance *ctx;
-    uv_file file;
-    uv_buf_t iov;
-    uv_fs_t req;
-    int ret;
-
-//    ctx = metalogfile->ctx;
-    file = metalogfile->file;
-    iov = uv_buf_init(buf, len);
-    ret = uv_fs_read(NULL, &req, file, &iov, 1, offset, NULL);
-    if (unlikely(ret < 0 && ret != req.result)) {
-        fatal("uv_fs_read: %s", uv_strerror(ret));
-    }
-    if (req.result < 0) {
-//        ++ctx->stats.io_errors;
-        rrd_stat_atomic_add(&global_io_errors, 1);
-        error("%s: uv_fs_read - %s - record at offset %"PRIu64"(%u) in metadata logfile %u-%u.", __func__,
-              uv_strerror((int)req.result), offset, (unsigned)len, metalogfile->starting_fileno, metalogfile->fileno);
-    }
-    uv_fs_req_cleanup(&req);
-//    ctx->stats.io_read_bytes += len;
-//    ++ctx->stats.io_read_requests;
-
-    return ret;
-}
-
-/* Return 0 on success */
-static int metadata_record_integrity_check(void *record)
-{
-    int ret;
-    uint32_t data_size;
-    struct rrdeng_metalog_record_header *header;
-    struct rrdeng_metalog_record_trailer *trailer;
-    uLong crc;
-
-    header = record;
-    data_size = header->header_length + header->payload_length;
-    trailer = record + data_size;
-
-    crc = crc32(0L, Z_NULL, 0);
-    crc = crc32(crc, record, data_size);
-    ret = crc32cmp(trailer->checksum, crc);
-
-    return ret;
-}
-
-#define MAX_READ_BYTES (RRDENG_BLOCK_SIZE * 32) /* no record should be over 128KiB in this version */
-
-/*
- * Iterates metadata log file records and creates database objects (host/chart/dimension)
- */
-static void iterate_records(struct metadata_logfile *metalogfile)
-{
-    uint32_t file_size, pos, bytes_remaining, record_size;
-    void *buf;
-    struct rrdeng_metalog_record_header *header;
-    struct metalog_instance *ctx = metalogfile->ctx;
-    struct metalog_pluginsd_state *state = ctx->metalog_parser_object->private;
-    const size_t min_header_size = offsetof(struct rrdeng_metalog_record_header, header_length) +
-                                   sizeof(header->header_length);
-
-    file_size = metalogfile->pos;
-    state->metalogfile = metalogfile;
-
-    buf = mallocz(MAX_READ_BYTES);
-
-    for (pos = sizeof(struct rrdeng_metalog_sb) ; pos < file_size ; pos += record_size) {
-        bytes_remaining = file_size - pos;
-        if (bytes_remaining < min_header_size) {
-            error("%s: unexpected end of file in metadata logfile %u-%u.", __func__, metalogfile->starting_fileno,
-                  metalogfile->fileno);
-            break;
-        }
-        if (metalogfile_read(metalogfile, buf, min_header_size, pos) < 0)
-            break;
-        header = (struct rrdeng_metalog_record_header *)buf;
-        if (METALOG_STORE_PADDING == header->type) {
-            info("%s: Skipping padding in metadata logfile %u-%u.", __func__, metalogfile->starting_fileno,
-                 metalogfile->fileno);
-            record_size = ALIGN_BYTES_FLOOR(pos + RRDENG_BLOCK_SIZE) - pos;
-            continue;
-        }
-        if (metalogfile_read(metalogfile, buf + min_header_size, sizeof(*header) - min_header_size,
-                             pos + min_header_size) < 0)
-            break;
-        record_size = header->header_length + header->payload_length + sizeof(struct rrdeng_metalog_record_trailer);
-        if (header->header_length < min_header_size || record_size > bytes_remaining) {
-            error("%s: Corrupted record in metadata logfile %u-%u.", __func__, metalogfile->starting_fileno,
-                  metalogfile->fileno);
-            break;
-        }
-        if (record_size > MAX_READ_BYTES) {
-            error("%s: Record is too long (%u bytes) in metadata logfile %u-%u.", __func__, record_size,
-                  metalogfile->starting_fileno, metalogfile->fileno);
-            continue;
-        }
-        if (metalogfile_read(metalogfile, buf + sizeof(*header), record_size - sizeof(*header),
-                             pos + sizeof(*header)) < 0)
-            break;
-        if (metadata_record_integrity_check(buf)) {
-            error("%s: Record at offset %"PRIu32" was read from disk. CRC32 check: FAILED", __func__, pos);
-            continue;
-        }
-        debug(D_METADATALOG, "%s: Record at offset %"PRIu32" was read from disk. CRC32 check: SUCCEEDED", __func__,
-              pos);
-
-        replay_record(metalogfile, header, buf + header->header_length);
-    }
-
-    freez(buf);
-}
-
-int load_metadata_logfile(struct metalog_instance *ctx, struct metadata_logfile *metalogfile)
-{
-    UNUSED(ctx);
-    uv_fs_t req;
-    uv_file file;
-    int ret, fd, error;
-    uint64_t file_size;
-    char path[RRDENG_PATH_MAX];
-
-    generate_metadata_logfile_path(metalogfile, path, sizeof(path));
-    if (file_is_migrated(path))
-        return 0;
-
-    fd = open_file_buffered_io(path, O_RDWR, &file);
-    if (fd < 0) {
-//        ++ctx->stats.fs_errors;
-        rrd_stat_atomic_add(&global_fs_errors, 1);
-        return fd;
-    }
-    info("Loading metadata log \"%s\".", path);
-
-    ret = check_file_properties(file, &file_size, sizeof(struct rrdeng_metalog_sb));
-    if (ret)
-        goto error;
-
-    ret = check_metadata_logfile_superblock(file);
-    if (ret)
-        goto error;
-//    ctx->stats.io_read_bytes += sizeof(struct rrdeng_jf_sb);
-//    ++ctx->stats.io_read_requests;
-
-    metalogfile->file = file;
-    metalogfile->pos = file_size;
-
-    iterate_records(metalogfile);
-
-    info("Metadata log \"%s\" migrated to the database (size:%"PRIu64").", path, file_size);
-    add_migrated_file(path, file_size);
-    return 0;
-
-error:
-    error = ret;
-    ret = uv_fs_close(NULL, &req, file, NULL);
-    if (ret < 0) {
-        error("uv_fs_close(%s): %s", path, uv_strerror(ret));
-//        ++ctx->stats.fs_errors;
-        rrd_stat_atomic_add(&global_fs_errors, 1);
-    }
-    uv_fs_req_cleanup(&req);
-    return error;
-}
-
-static int scan_metalog_files_cmp(const void *a, const void *b)
-{
-    struct metadata_logfile *file1, *file2;
-    char path1[RRDENG_PATH_MAX], path2[RRDENG_PATH_MAX];
-
-    file1 = *(struct metadata_logfile **)a;
-    file2 = *(struct metadata_logfile **)b;
-    generate_metadata_logfile_path(file1, path1, sizeof(path1));
-    generate_metadata_logfile_path(file2, path2, sizeof(path2));
-    return strcmp(path1, path2);
-}
-
-/* Returns number of metadata logfiles that were loaded or < 0 on error */
-static int scan_metalog_files(struct metalog_instance *ctx)
-{
-    int ret;
-    unsigned starting_no, no, matched_files, i, failed_to_load;
-    static uv_fs_t req;
-    uv_dirent_t dent;
-    struct metadata_logfile **metalogfiles, *metalogfile;
-    char *dbfiles_path = ctx->rrdeng_ctx->dbfiles_path;
-
-    ret = uv_fs_scandir(NULL, &req, dbfiles_path, 0, NULL);
-    if (ret < 0) {
-        fatal_assert(req.result < 0);
-        uv_fs_req_cleanup(&req);
-        error("uv_fs_scandir(%s): %s", dbfiles_path, uv_strerror(ret));
-//        ++ctx->stats.fs_errors;
-        rrd_stat_atomic_add(&global_fs_errors, 1);
-        return ret;
-    }
-    info("Found %d files in path %s", ret, dbfiles_path);
-
-    metalogfiles = callocz(MIN(ret, MAX_DATAFILES), sizeof(*metalogfiles));
-    for (matched_files = 0 ; UV_EOF != uv_fs_scandir_next(&req, &dent) && matched_files < MAX_DATAFILES ; ) {
-        info("Scanning file \"%s/%s\"", dbfiles_path, dent.name);
-        ret = sscanf(dent.name, METALOG_PREFIX METALOG_FILE_NUMBER_SCAN_TMPL METALOG_EXTENSION, &starting_no, &no);
-        if (2 == ret) {
-            info("Matched file \"%s/%s\"", dbfiles_path, dent.name);
-            metalogfile = mallocz(sizeof(*metalogfile));
-            metadata_logfile_init(metalogfile, ctx, starting_no, no);
-            metalogfiles[matched_files++] = metalogfile;
-        }
-    }
-    uv_fs_req_cleanup(&req);
-
-    if (0 == matched_files) {
-        freez(metalogfiles);
-        return 0;
-    }
-    if (matched_files == MAX_DATAFILES) {
-        error("Warning: hit maximum database engine file limit of %d files", MAX_DATAFILES);
-    }
-    qsort(metalogfiles, matched_files, sizeof(*metalogfiles), scan_metalog_files_cmp);
-    ret = compaction_failure_recovery(ctx, metalogfiles, &matched_files);
-    if (ret) { /* If the files are corrupted fail */
-        for (i = 0 ; i < matched_files ; ++i) {
-            freez(metalogfiles[i]);
-        }
-        freez(metalogfiles);
-        return UV_EINVAL;
-    }
-    //ctx->last_fileno = metalogfiles[matched_files - 1]->fileno;
-
-    struct plugind cd = {
-        .enabled = 1,
-        .update_every = 0,
-        .pid = 0,
-        .serial_failures = 0,
-        .successful_collections = 0,
-        .obsolete = 0,
-        .started_t = INVALID_TIME,
-        .next = NULL,
-        .version = 0,
-    };
-
-    struct metalog_pluginsd_state metalog_parser_state;
-    metalog_pluginsd_state_init(&metalog_parser_state, ctx);
-
-    PARSER_USER_OBJECT metalog_parser_object = {
-        .enabled = cd.enabled,
-        .host = ctx->rrdeng_ctx->host,
-        .cd = &cd,
-        .trust_durations = 0,
-        .private = &metalog_parser_state
-    };
-
-    PARSER *parser = parser_init(metalog_parser_object.host, &metalog_parser_object, NULL, PARSER_INPUT_SPLIT);
-    parser_add_keyword(parser, PLUGINSD_KEYWORD_HOST, metalog_pluginsd_host);
-    parser_add_keyword(parser, PLUGINSD_KEYWORD_GUID, pluginsd_guid);
-    parser_add_keyword(parser, PLUGINSD_KEYWORD_CONTEXT, pluginsd_context);
-    parser_add_keyword(parser, PLUGINSD_KEYWORD_TOMBSTONE, pluginsd_tombstone);
-    parser->plugins_action->dimension_action = &metalog_pluginsd_dimension_action;
-    parser->plugins_action->chart_action     = &metalog_pluginsd_chart_action;
-    parser->plugins_action->guid_action      = &metalog_pluginsd_guid_action;
-    parser->plugins_action->context_action   = &metalog_pluginsd_context_action;
-    parser->plugins_action->tombstone_action = &metalog_pluginsd_tombstone_action;
-    parser->plugins_action->host_action      = &metalog_pluginsd_host_action;
-
-
-    metalog_parser_object.parser = parser;
-    ctx->metalog_parser_object = &metalog_parser_object;
-
-    for (failed_to_load = 0, i = 0 ; i < matched_files ; ++i) {
-        metalogfile = metalogfiles[i];
-        db_lock();
-        db_execute("BEGIN TRANSACTION;");
-        ret = load_metadata_logfile(ctx, metalogfile);
-        if (0 != ret) {
-            error("Deleting invalid metadata log file \"%s/"METALOG_PREFIX METALOG_FILE_NUMBER_PRINT_TMPL
-                      METALOG_EXTENSION"\"", dbfiles_path, metalogfile->starting_fileno, metalogfile->fileno);
-            unlink_metadata_logfile(metalogfile);
-            ++failed_to_load;
-            db_execute("ROLLBACK TRANSACTION;");
-        }
-        else
-            db_execute("COMMIT TRANSACTION;");
-        db_unlock();
-        freez(metalogfile);
-    }
-    matched_files -= failed_to_load;
-    debug(D_METADATALOG, "PARSER ended");
-
-    parser_destroy(parser);
-
-    size_t count __maybe_unused = metalog_parser_object.count;
-
-    debug(D_METADATALOG, "Parsing count=%u", (unsigned)count);
-
-    freez(metalogfiles);
-    return matched_files;
-}
-
-/* Return 0 on success. */
-int init_metalog_files(struct metalog_instance *ctx)
-{
-    int ret;
-    char *dbfiles_path = ctx->rrdeng_ctx->dbfiles_path;
-
-    ret = scan_metalog_files(ctx);
-    if (ret < 0) {
-        error("Failed to scan path \"%s\".", dbfiles_path);
-        return ret;
-    }/* else if (0 == ret) {
-        ctx->last_fileno = 1;
-    }*/
-
-    return 0;
-}
diff --git a/database/engine/metadata_log/logfile.h b/database/engine/metadata_log/logfile.h
deleted file mode 100644
index df12ac714..000000000
--- a/database/engine/metadata_log/logfile.h
+++ /dev/null
@@ -1,39 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_LOGFILE_H
-#define NETDATA_LOGFILE_H
-
-#include "metadatalogprotocol.h"
-#include "../rrdengine.h"
-
-/* Forward declarations */
-struct metadata_logfile;
-struct metalog_worker_config;
-
-#define METALOG_PREFIX "metadatalog-"
-#define METALOG_EXTENSION ".mlf"
-
-/* only one event loop is supported for now */
-struct metadata_logfile {
-    unsigned fileno; /* Starts at 1 */
-    unsigned starting_fileno; /* 0 for normal files, staring number during compaction */
-    uv_file file;
-    uint64_t pos;
-    struct metalog_instance *ctx;
-    struct metadata_logfile *next;
-};
-
-struct metadata_logfile_list {
-    struct metadata_logfile *first; /* oldest */
-    struct metadata_logfile *last; /* newest */
-};
-
-extern void generate_metadata_logfile_path(struct metadata_logfile *metadatalog, char *str, size_t maxlen);
-extern int rename_metadata_logfile(struct metadata_logfile *metalogfile, unsigned new_starting_fileno,
-                                   unsigned new_fileno);
-extern int unlink_metadata_logfile(struct metadata_logfile *metalogfile);
-extern int load_metadata_logfile(struct metalog_instance *ctx, struct metadata_logfile *logfile);
-extern int init_metalog_files(struct metalog_instance *ctx);
-
-
-#endif /* NETDATA_LOGFILE_H */
diff --git a/database/engine/metadata_log/metadatalog.h b/database/engine/metadata_log/metadatalog.h
deleted file mode 100644
index 483036a91..000000000
--- a/database/engine/metadata_log/metadatalog.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_METADATALOG_H
-#define NETDATA_METADATALOG_H
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-#include "../rrdengine.h"
-#include "metadatalogprotocol.h"
-#include "logfile.h"
-#include "metadatalogapi.h"
-#include "compaction.h"
-
-/* Forward declarations */
-struct metalog_instance;
-struct parser_user_object;
-
-#define METALOG_FILE_NUMBER_SCAN_TMPL "%5u-%5u"
-#define METALOG_FILE_NUMBER_PRINT_TMPL "%5.5u-%5.5u"
-
-struct metalog_instance {
-    struct rrdengine_instance *rrdeng_ctx;
-    struct parser_user_object *metalog_parser_object;
-    uint8_t initialized; /* set to 1 to mark context initialized */
-};
-
-#endif /* NETDATA_METADATALOG_H */
diff --git a/database/engine/metadata_log/metadatalogapi.c b/database/engine/metadata_log/metadatalogapi.c
deleted file mode 100755
index b206cca05..000000000
--- a/database/engine/metadata_log/metadatalogapi.c
+++ /dev/null
@@ -1,39 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#define NETDATA_RRD_INTERNALS
-
-#include "metadatalog.h"
-
-/*
- * Returns 0 on success, negative on error
- */
-int metalog_init(struct rrdengine_instance *rrdeng_parent_ctx)
-{
-    struct metalog_instance *ctx;
-    int error;
-
-    ctx = callocz(1, sizeof(*ctx));
-    ctx->initialized = 0;
-    rrdeng_parent_ctx->metalog_ctx = ctx;
-
-    ctx->rrdeng_ctx = rrdeng_parent_ctx;
-    error = init_metalog_files(ctx);
-    if (error) {
-        goto error_after_init_rrd_files;
-    }
-    ctx->initialized = 1; /* notify dbengine that the metadata log has finished initializing */
-    return 0;
-
-error_after_init_rrd_files:
-    freez(ctx);
-    return UV_EIO;
-}
-
-/* This function is called by dbengine rotation logic when the metric has no writers */
-void metalog_delete_dimension_by_uuid(struct metalog_instance *ctx, uuid_t *metric_uuid)
-{
-    uuid_t  multihost_uuid;
-
-    delete_dimension_uuid(metric_uuid);
-    rrdeng_convert_legacy_uuid_to_multihost(ctx->rrdeng_ctx->machine_guid, metric_uuid, &multihost_uuid);
-    delete_dimension_uuid(&multihost_uuid);
-}
diff --git a/database/engine/metadata_log/metadatalogapi.h b/database/engine/metadata_log/metadatalogapi.h
deleted file mode 100644
index d558b9317..000000000
--- a/database/engine/metadata_log/metadatalogapi.h
+++ /dev/null
@@ -1,12 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_METADATALOGAPI_H
-#define NETDATA_METADATALOGAPI_H
-
-extern void metalog_commit_delete_chart(RRDSET *st);
-extern void metalog_delete_dimension_by_uuid(struct metalog_instance *ctx, uuid_t *metric_uuid);
-
-/* must call once before using anything */
-extern int metalog_init(struct rrdengine_instance *rrdeng_parent_ctx);
-
-#endif /* NETDATA_METADATALOGAPI_H */
diff --git a/database/engine/metadata_log/metadatalogprotocol.h b/database/engine/metadata_log/metadatalogprotocol.h
deleted file mode 100644
index 1017213ae..000000000
--- a/database/engine/metadata_log/metadatalogprotocol.h
+++ /dev/null
@@ -1,53 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_METADATALOGPROTOCOL_H
-#define NETDATA_METADATALOGPROTOCOL_H
-
-#include "../rrddiskprotocol.h"
-
-#define RRDENG_METALOG_MAGIC "netdata-metadata-log"
-
-#define RRDENG_METALOG_VER (1)
-
-#define RRDENG_METALOG_SB_PADDING_SZ (RRDENG_BLOCK_SIZE - (RRDENG_MAGIC_SZ + sizeof(uint16_t)))
-/*
- * Metadata log persistent super-block
- */
-struct rrdeng_metalog_sb {
-    char magic_number[RRDENG_MAGIC_SZ];
-    uint16_t version;
-    uint8_t padding[RRDENG_METALOG_SB_PADDING_SZ];
-} __attribute__ ((packed));
-
-/*
- * Metadata log record types
- */
-#define METALOG_STORE_PADDING       (0)
-#define METALOG_CREATE_OBJECT       (1)
-#define METALOG_DELETE_OBJECT       (2)
-#define METALOG_OTHER               (3) /* reserved */
-
-/*
- * Metadata log record header
- */
-struct rrdeng_metalog_record_header {
-    /* when set to METALOG_STORE_PADDING jump to start of next block */
-    uint8_t type;
-
-    uint16_t header_length;
-    uint32_t payload_length;
-    /******************************************************
-     * No fields above this point can ever change.        *
-     ******************************************************
-     * All fields below this point are subject to change. *
-     ******************************************************/
-} __attribute__ ((packed));
-
-/*
- * Metadata log record trailer
- */
-struct rrdeng_metalog_record_trailer {
-    uint8_t checksum[CHECKSUM_SZ]; /* CRC32 */
-} __attribute__ ((packed));
-
-#endif /* NETDATA_METADATALOGPROTOCOL_H */
diff --git a/database/engine/metadata_log/metalogpluginsd.c b/database/engine/metadata_log/metalogpluginsd.c
deleted file mode 100755
index a5301bc10..000000000
--- a/database/engine/metadata_log/metalogpluginsd.c
+++ /dev/null
@@ -1,140 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-#define NETDATA_RRD_INTERNALS
-
-#include "metadatalog.h"
-#include "metalogpluginsd.h"
-
-extern struct config stream_config;
-
-PARSER_RC metalog_pluginsd_host_action(
-    void *user, char *machine_guid, char *hostname, char *registry_hostname, int update_every, char *os, char *timezone,
-    char *tags)
-{
-    struct metalog_pluginsd_state *state = ((PARSER_USER_OBJECT *)user)->private;
-
-    RRDHOST *host = rrdhost_find_by_guid(machine_guid, 0);
-    if (host) {
-        if (unlikely(host->rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE)) {
-            error("Archived host '%s' has memory mode '%s', but the archived one is '%s'. Ignoring archived state.",
-                  host->hostname, rrd_memory_mode_name(host->rrd_memory_mode),
-                  rrd_memory_mode_name(RRD_MEMORY_MODE_DBENGINE));
-            ((PARSER_USER_OBJECT *) user)->host = NULL; /* Ignore objects if memory mode is not dbengine */
-        }
-        ((PARSER_USER_OBJECT *) user)->host = host;
-        return PARSER_RC_OK;
-    }
-
-    if (strcmp(machine_guid, registry_get_this_machine_guid()) == 0) {
-        ((PARSER_USER_OBJECT *) user)->host = host;
-        return PARSER_RC_OK;
-    }
-
-    if (likely(!uuid_parse(machine_guid, state->host_uuid))) {
-        int rc = sql_store_host(&state->host_uuid, hostname, registry_hostname, update_every, os, timezone, tags, 1);
-        if (unlikely(rc)) {
-            errno = 0;
-            error("Failed to store host %s with UUID %s in the database", hostname, machine_guid);
-        }
-    }
-    else {
-        errno = 0;
-        error("Host machine GUID %s is not valid", machine_guid);
-    }
-
-    return PARSER_RC_OK;
-}
-
-PARSER_RC metalog_pluginsd_chart_action(void *user, char *type, char *id, char *name, char *family, char *context,
-                                        char *title, char *units, char *plugin, char *module, int priority,
-                                        int update_every, RRDSET_TYPE chart_type, char *options)
-{
-    UNUSED(options);
-
-    struct metalog_pluginsd_state *state = ((PARSER_USER_OBJECT *)user)->private;
-    RRDHOST *host = ((PARSER_USER_OBJECT *) user)->host;
-
-    if (unlikely(uuid_is_null(state->host_uuid))) {
-        debug(D_METADATALOG, "Ignoring chart belonging to missing or ignored host.");
-        return PARSER_RC_OK;
-    }
-    uuid_copy(state->chart_uuid, state->uuid);
-    uuid_clear(state->uuid); /* Consume UUID */
-    (void) sql_store_chart(&state->chart_uuid, &state->host_uuid,
-        type, id, name, family, context, title, units,
-        plugin, module, priority, update_every,
-        chart_type, RRD_MEMORY_MODE_DBENGINE, host ? host->rrd_history_entries : 1);
-    ((PARSER_USER_OBJECT *)user)->st_exists = 1;
-
-    return PARSER_RC_OK;
-}
-
-PARSER_RC metalog_pluginsd_dimension_action(void *user, RRDSET *st, char *id, char *name, char *algorithm,
-                                            long multiplier, long divisor, char *options, RRD_ALGORITHM algorithm_type)
-{
-    struct metalog_pluginsd_state *state = ((PARSER_USER_OBJECT *)user)->private;
-    UNUSED(user);
-    UNUSED(options);
-    UNUSED(algorithm);
-    UNUSED(st);
-
-    if (unlikely(uuid_is_null(state->chart_uuid))) {
-        debug(D_METADATALOG, "Ignoring dimension belonging to missing or ignored chart.");
-        info("Ignoring dimension belonging to missing or ignored chart.");
-        return PARSER_RC_OK;
-    }
-
-    if (unlikely(uuid_is_null(state->uuid))) {
-        debug(D_METADATALOG, "Ignoring dimension without unknown UUID");
-        info("Ignoring dimension without unknown UUID");
-        return PARSER_RC_OK;
-    }
-
-    (void) sql_store_dimension(&state->uuid, &state->chart_uuid, id, name, multiplier, divisor, algorithm_type);
-    uuid_clear(state->uuid); /* Consume UUID */
-
-    return PARSER_RC_OK;
-}
-
-PARSER_RC metalog_pluginsd_guid_action(void *user, uuid_t *uuid)
-{
-    struct metalog_pluginsd_state *state = ((PARSER_USER_OBJECT *)user)->private;
-
-    uuid_copy(state->uuid, *uuid);
-
-    return PARSER_RC_OK;
-}
-
-PARSER_RC metalog_pluginsd_context_action(void *user, uuid_t *uuid)
-{
-    struct metalog_pluginsd_state *state = ((PARSER_USER_OBJECT *)user)->private;
-
-    int rc = find_uuid_type(uuid);
-
-    if (rc == 1) {
-        uuid_copy(state->host_uuid, *uuid);
-        ((PARSER_USER_OBJECT *)user)->st_exists = 0;
-        ((PARSER_USER_OBJECT *)user)->host_exists = 1;
-    } else if (rc == 2) {
-        uuid_copy(state->chart_uuid, *uuid);
-        ((PARSER_USER_OBJECT *)user)->st_exists = 1;
-    } else
-        uuid_copy(state->uuid, *uuid);
-
-    return PARSER_RC_OK;
-}
-
-PARSER_RC metalog_pluginsd_tombstone_action(void *user, uuid_t *uuid)
-{
-    UNUSED(user);
-    UNUSED(uuid);
-
-    return PARSER_RC_OK;
-}
-
-void metalog_pluginsd_state_init(struct metalog_pluginsd_state *state, struct metalog_instance *ctx)
-{
-    state->ctx = ctx;
-    state->skip_record = 0;
-    uuid_clear(state->uuid);
-    state->metalogfile = NULL;
-}
diff --git a/database/engine/metadata_log/metalogpluginsd.h b/database/engine/metadata_log/metalogpluginsd.h
deleted file mode 100644
index 4fd8c3900..000000000
--- a/database/engine/metadata_log/metalogpluginsd.h
+++ /dev/null
@@ -1,33 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#ifndef NETDATA_METALOGPLUGINSD_H
-#define NETDATA_METALOGPLUGINSD_H
-
-#include "collectors/plugins.d/pluginsd_parser.h"
-#include "collectors/plugins.d/plugins_d.h"
-#include "parser/parser.h"
-
-struct metalog_pluginsd_state {
-    struct metalog_instance *ctx;
-    uuid_t uuid;
-    uuid_t host_uuid;
-    uuid_t chart_uuid;
-    uint8_t skip_record; /* skip this record due to errors in parsing */
-    struct metadata_logfile *metalogfile; /* current metadata log file being replayed */
-};
-
-extern void metalog_pluginsd_state_init(struct metalog_pluginsd_state *state, struct metalog_instance *ctx);
-
-extern PARSER_RC metalog_pluginsd_chart_action(void *user, char *type, char *id, char *name, char *family,
-                                               char *context, char *title, char *units, char *plugin, char *module,
-                                               int priority, int update_every, RRDSET_TYPE chart_type, char *options);
-extern PARSER_RC metalog_pluginsd_dimension_action(void *user, RRDSET *st, char *id, char *name, char *algorithm,
-                                                   long multiplier, long divisor, char *options,
-                                                   RRD_ALGORITHM algorithm_type);
-extern PARSER_RC metalog_pluginsd_guid_action(void *user, uuid_t *uuid);
-extern PARSER_RC metalog_pluginsd_context_action(void *user, uuid_t *uuid);
-extern PARSER_RC metalog_pluginsd_tombstone_action(void *user, uuid_t *uuid);
-extern PARSER_RC metalog_pluginsd_host(char **words, void *user, PLUGINSD_ACTION  *plugins_action);
-extern PARSER_RC metalog_pluginsd_host_action(void *user, char *machine_guid, char *hostname, char *registry_hostname, int update_every, char *os, char *timezone, char *tags);
-
-#endif /* NETDATA_METALOGPLUGINSD_H */