Fix thumbnail copying for incremental index, fix incremental index when there are no new updates, add option for JSON logs output

src/ctx.h

@@ -75,6 +75,7 @@ typedef struct {
     int verbose;
     int very_verbose;
     int no_color;
+    int json_logs;
 } LogCtx_t;
 
 typedef struct {

src/io/serialize.c

@@ -500,9 +500,6 @@ void incremental_copy_handle_doc(cJSON *document, UNUSED(const char id_str[SIST_
         json_str = realloc(json_str, json_str_len + 1);
         *(json_str + json_str_len) = '\n';
 
-        zstd_write_string(json_str, json_str_len + 1);
-        free(json_str);
-
         // Copy tn store contents
         size_t buf_len;
         char *buf = store_read(IncrementalCopySourceStore, (char *) doc_id, SIST_DOC_ID_LEN, &buf_len);
@@ -510,6 +507,26 @@ void incremental_copy_handle_doc(cJSON *document, UNUSED(const char id_str[SIST_
             store_write(IncrementalCopyDestinationStore, (char *) doc_id, SIST_DOC_ID_LEN, buf, buf_len);
             free(buf);
         }
+
+        // Also copy additional thumbnails
+        if (cJSON_GetObjectItem(document, "thumbnail") != NULL) {
+            const int thumbnail_count = cJSON_GetObjectItem(document, "thumbnail")->valueint;
+
+            for (int i = 1; i < thumbnail_count; i++) {
+                char tn_key[SIST_DOC_ID_LEN + sizeof(char) * 4];
+
+                snprintf(tn_key, sizeof(tn_key), "%s%04d", doc_id, i);
+
+                buf = store_read(IncrementalCopySourceStore, tn_key, sizeof(tn_key), &buf_len);
+                if (buf_len != 0) {
+                    store_write(IncrementalCopyDestinationStore, tn_key, sizeof(tn_key), buf, buf_len);
+                    free(buf);
+                }
+            }
+        }
+
+        zstd_write_string(json_str, json_str_len + 1);
+        free(json_str);
     }
 }
 

src/io/store.c

@@ -87,7 +87,7 @@ void store_write(store_t *store, char *key, size_t key_len, char *buf, size_t bu
     }
 
     if (db_full) {
-        LOG_INFOF("store.c", "Updating mdb mapsize to %lu bytes", store->size)
+        LOG_DEBUGF("store.c", "Updating mdb mapsize to %lu bytes", store->size)
 
         if (should_abort_transaction) {
             mdb_txn_abort(txn);
@@ -116,7 +116,7 @@ void store_write(store_t *store, char *key, size_t key_len, char *buf, size_t bu
                        store->path, mdb_strerror(ret), ret,
                        put_ret, put_ret_retry);
         }
-        LOG_INFOF("store.c", "Updated mdb mapsize to %lu bytes", store->size)
+        LOG_DEBUGF("store.c", "Updated mdb mapsize to %lu bytes", store->size)
     } else if (put_ret != 0) {
         LOG_ERROR("store.c", mdb_strerror(put_ret))
     }

src/log.c

@@ -1,4 +1,5 @@
 #include "log.h"
+#include "ctx.h"
 
 #include <pthread.h>
 #include <stdarg.h>
@@ -30,6 +31,30 @@ void vsist_logf(const char *filepath, int level, char *format, va_list ap) {
     strftime(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S", &result);
 
     int log_len;
+    if (LogCtx.json_logs) {
+        vsnprintf(log_str, sizeof(log_str), format, ap);
+
+        cJSON *log_str_json = cJSON_CreateString(log_str);
+        char *log_str_json_str = cJSON_PrintUnformatted(log_str_json);
+
+        cJSON *filepath_json = cJSON_CreateString(filepath);
+        char *filepath_json_str = cJSON_PrintUnformatted(filepath_json);
+
+        log_len = snprintf(
+                log_str, sizeof(log_str),
+                "{\"thread\":\"%04llX\",\"datetime\":\"%s\",\"level\":\"%s\",\"filepath\":%s,\"message\":%s}\n",
+                pid, datetime, log_levels[level], filepath_json_str, log_str_json_str
+        );
+
+        cJSON_Delete(filepath_json);
+        cJSON_Delete(log_str_json);
+        free(log_str_json_str);
+        free(filepath_json_str);
+
+        write(STDOUT_FILENO, log_str, log_len);
+        return;
+    }
+
     if (is_tty) {
         log_len = snprintf(
                 log_str, sizeof(log_str),
@@ -97,6 +122,28 @@ void sist_log(const char *filepath, int level, char *str) {
     strftime(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S", &result);
 
     int log_len;
+
+    if (LogCtx.json_logs) {
+        cJSON *log_str_json = cJSON_CreateString(str);
+        char *log_str_json_str = cJSON_PrintUnformatted(log_str_json);
+
+        cJSON *filepath_json = cJSON_CreateString(filepath);
+        char *filepath_json_str = cJSON_PrintUnformatted(filepath_json);
+
+        log_len = snprintf(
+                log_str, sizeof(log_str),
+                "{\"thread\":\"%04llX\",\"datetime\":\"%s\",\"level\":\"%s\",\"filepath\":%s,\"message\":%s}\n",
+                pid, datetime, log_levels[level], filepath_json_str, log_str_json_str
+        );
+
+        cJSON_Delete(log_str_json);
+        cJSON_Delete(filepath_json);
+        free(log_str_json_str);
+        free(filepath_json_str);
+
+        write(STDOUT_FILENO, log_str, log_len);
+        return;
+    }
     if (is_tty) {
         log_len = snprintf(
                 log_str, sizeof(log_str),

src/main.c

@@ -328,7 +328,7 @@ void load_incremental_index(const scan_args_t *args) {
             file_path,
             args->incremental,
             incremental_read(ScanCtx.original_table, file_path, &original_desc),
-            LOG_FATALF("main.c", "Could not open original main index for incremental scan: %s", strerror(errno)),
+            LOG_DEBUG("main.c", "The base index for incremental scan does not have a main index"),
             TRUE
     );
 
@@ -635,6 +635,7 @@ int main(int argc, const char *argv[]) {
             OPT_BOOLEAN('v', "version", &arg_version, "Show version and exit"),
             OPT_BOOLEAN(0, "verbose", &LogCtx.verbose, "Turn on logging"),
             OPT_BOOLEAN(0, "very-verbose", &LogCtx.very_verbose, "Turn on debug messages"),
+            OPT_BOOLEAN(0, "json-logs", &LogCtx.json_logs, "Output logs in JSON format."),
 
             OPT_GROUP("Scan options"),
             OPT_INTEGER('t', "threads", &common_threads, "Number of threads. DEFAULT=1"),

src/sist.h

@@ -49,7 +49,7 @@
 #include <ctype.h>
 #include "git_hash.h"
 
-#define VERSION "2.12.2"
+#define VERSION "2.13.0"
 static const char *const Version = VERSION;
 
 #ifndef SIST_PLATFORM

src/tpool.c

@@ -34,6 +34,7 @@ typedef struct tpool {
 
     int free_arg;
     int stop;
+    int waiting;
 
     int print_progress;
 
@@ -121,22 +122,22 @@ int tpool_add_work(tpool_t *pool, thread_func_t func, void *arg) {
  * see: https://github.com/htop-dev/htop/blob/f782f821f7f8081cb43bbad1c37f32830a260a81/linux/LinuxProcessList.c
  */
 __always_inline
-static size_t _get_total_mem(tpool_t* pool) {
-    FILE* statmfile = fopen("/proc/self/statm", "r");
+static size_t _get_total_mem(tpool_t *pool) {
+    FILE *statmfile = fopen("/proc/self/statm", "r");
     if (!statmfile)
-      return 0;
+        return 0;
 
     long int dummy, dummy2, dummy3, dummy4, dummy5, dummy6;
     long int m_resident;
 
     int r = fscanf(statmfile, "%ld %ld %ld %ld %ld %ld %ld",
-        &dummy, /* m_virt */
-        &m_resident,
-        &dummy2, /* m_share */
-        &dummy3, /* m_trs */
-        &dummy4, /* unused since Linux 2.6; always 0 */
-        &dummy5, /* m_drs */
-        &dummy6); /* unused since Linux 2.6; always 0 */
+                   &dummy, /* m_virt */
+                   &m_resident,
+                   &dummy2, /* m_share */
+                   &dummy3, /* m_trs */
+                   &dummy4, /* unused since Linux 2.6; always 0 */
+                   &dummy5, /* m_drs */
+                   &dummy6); /* unused since Linux 2.6; always 0 */
     fclose(statmfile);
 
     if (r == 7) {
@@ -174,7 +175,7 @@ static void *tpool_worker(void *arg) {
         if (work != NULL) {
             stuck_notified = 0;
             throttle_ms = 0;
-            while(!pool->stop && pool->mem_limit > 0 && _get_total_mem(pool) >= pool->mem_limit) {
+            while (!pool->stop && pool->mem_limit > 0 && _get_total_mem(pool) >= pool->mem_limit) {
                 if (!stuck_notified && throttle_ms >= 90000) {
                     // notify the pool that this thread is stuck.
                     pthread_mutex_lock(&(pool->work_mutex));
@@ -215,7 +216,13 @@ static void *tpool_worker(void *arg) {
         }
 
         if (pool->print_progress) {
-            progress_bar_print((double) pool->done_cnt / pool->work_cnt, ScanCtx.stat_tn_size, ScanCtx.stat_index_size);
+            if (LogCtx.json_logs) {
+                progress_bar_print_json(pool->done_cnt, pool->work_cnt, ScanCtx.stat_tn_size,
+                                        ScanCtx.stat_index_size, pool->waiting);
+            } else {
+                progress_bar_print((double) pool->done_cnt / pool->work_cnt, ScanCtx.stat_tn_size,
+                                   ScanCtx.stat_index_size);
+            }
         }
 
         if (pool->work_head == NULL) {
@@ -238,6 +245,9 @@ static void *tpool_worker(void *arg) {
 void tpool_wait(tpool_t *pool) {
     LOG_DEBUG("tpool.c", "Waiting for worker threads to finish")
     pthread_mutex_lock(&(pool->work_mutex));
+
+    pool->waiting = TRUE;
+
     while (TRUE) {
         if (pool->done_cnt < pool->work_cnt) {
             pthread_cond_wait(&(pool->working_cond), &(pool->work_mutex));
@@ -250,7 +260,7 @@ void tpool_wait(tpool_t *pool) {
             }
         }
     }
-    if (pool->print_progress) {
+    if (pool->print_progress && !LogCtx.json_logs) {
         progress_bar_print(1.0, ScanCtx.stat_tn_size, ScanCtx.stat_index_size);
     }
     pthread_mutex_unlock(&(pool->work_mutex));
@@ -312,6 +322,7 @@ tpool_t *tpool_create(int thread_cnt, void cleanup_func(), int free_arg, int pri
     pool->throttle_stuck_cnt = 0;
     pool->mem_limit = mem_limit;
     pool->stop = FALSE;
+    pool->waiting = FALSE;
     pool->free_arg = free_arg;
     pool->cleanup_func = cleanup_func;
     pool->threads = calloc(sizeof(pthread_t), thread_cnt);

src/util.c

@@ -86,6 +86,21 @@ char *expandpath(const char *path) {
 
 int PrintingProgressBar = 0;
 
+#define BOOLEAN_STRING(x) ((x) == 0  ? "false" : "true")
+
+void progress_bar_print_json(size_t done, size_t count, size_t tn_size, size_t index_size, int waiting) {
+
+    char log_str[1024];
+
+    size_t log_len = snprintf(
+            log_str, sizeof(log_str),
+            "{\"progress\": {\"done\":%lu,\"count\":%lu,\"tn_size\":%lu,\"index_size\":%lu,\"waiting\":%s}}\n",
+            done, count, tn_size, index_size, BOOLEAN_STRING(waiting)
+    );
+
+    write(STDOUT_FILENO, log_str, log_len);
+}
+
 void progress_bar_print(double percentage, size_t tn_size, size_t index_size) {
 
     static int last_val = -1;

src/util.h

@@ -19,6 +19,7 @@ dyn_buffer_t url_escape(char *str);
 
 extern int PrintingProgressBar;
 
+void progress_bar_print_json(size_t done, size_t count,  size_t tn_size, size_t index_size, int waiting);
 void progress_bar_print(double percentage, size_t tn_size, size_t index_size);
 
 GHashTable *incremental_get_table();

src/web/serve.c

@@ -20,6 +20,13 @@ static struct mg_http_serve_opts DefaultServeOpts = {
 };
 
 
+__always_inline
+static char *address_to_string(struct mg_addr *addr) {
+    static char address_to_string_buf[INET6_ADDRSTRLEN];
+
+    return mg_ntoa(addr, address_to_string_buf, sizeof(address_to_string_buf));
+}
+
 static void send_response_line(struct mg_connection *nc, int status_code, size_t length, char *extra_headers) {
     mg_printf(
             nc,
@@ -592,6 +599,11 @@ static void ev_router(struct mg_connection *nc, int ev, void *ev_data, UNUSED(vo
             }
         }
 
+        LOG_DEBUGF("serve.c", "<%s> GET %s",
+                   address_to_string(&(nc->rem)),
+                   hm->uri
+        )
+
         if (mg_http_match_uri(hm, "/")) {
             search_index(nc, hm);
         } else if (mg_http_match_uri(hm, "/favicon.ico")) {

third-party/libscan/CMakeLists.txt

@@ -109,7 +109,7 @@ find_library(MUPDF_LIB NAMES liblibmupdf.a)
 find_library(CMS_LIB NAMES lcms2)
 find_library(JAS_LIB NAMES jasper)
 find_library(GUMBO_LIB NAMES gumbo)
-find_library(GOMP_LIB NAMES libgomp.a gomp PATHS /usr/lib/gcc/x86_64-linux-gnu/5/ /usr/lib/gcc/x86_64-linux-gnu/9/ /usr/lib/gcc/x86_64-linux-gnu/10/ /usr/lib/gcc/aarch64-linux-gnu/7/ /usr/lib/gcc/aarch64-linux-gnu/9/ /usr/lib/gcc/x86_64-linux-gnu/7/)
+find_library(GOMP_LIB NAMES libgomp.a gomp PATHS /usr/lib/gcc/x86_64-linux-gnu/11/ /usr/lib/gcc/x86_64-linux-gnu/5/ /usr/lib/gcc/x86_64-linux-gnu/9/ /usr/lib/gcc/x86_64-linux-gnu/10/ /usr/lib/gcc/aarch64-linux-gnu/7/ /usr/lib/gcc/aarch64-linux-gnu/9/ /usr/lib/gcc/x86_64-linux-gnu/7/)
 
 
 target_compile_options(

third-party/libscan/libscan/ocr/ocr.h

@@ -28,6 +28,8 @@ ocr_extract_text(const char *tesseract_path, const char *tesseract_lang,
     TessBaseAPI *api = TessBaseAPICreate();
     TessBaseAPIInit3(api, tesseract_path, tesseract_lang);
 
+    TessBaseAPISetPageSegMode(api, PSM_AUTO_OSD);
+
     TessBaseAPISetImage(api, img_buf, img_w, img_h, img_bpp, img_stride);
     TessBaseAPISetSourceResolution(api, img_xres);