Move export format parsing from src/journal-remote/ to src/basic/

No functional change.

1 files changed, 12 insertions, 419 deletions

diff --git a/src/journal-remote/journal-remote-parse.c b/src/journal-remote/journal-remote-parse.c
index 9ba9ee3fc0..79afe6604c 100644
--- a/src/journal-remote/journal-remote-parse.c
+++ b/src/journal-remote/journal-remote-parse.c
@@ -24,20 +24,11 @@
 #include "parse-util.h"
 #include "string-util.h"
 
-#define LINE_CHUNK 8*1024u
-
 void source_free(RemoteSource *source) {
         if (!source)
                 return;
 
-        if (source->fd >= 0 && !source->passive_fd) {
-                log_debug("Closing fd:%d (%s)", source->fd, source->name);
-                safe_close(source->fd);
-        }
-
-        free(source->name);
-        free(source->buf);
-        iovw_free_contents(&source->iovw);
+        journal_importer_cleanup(&source->importer);
 
         log_debug("Writer ref count %i", source->writer->n_ref);
         writer_unref(source->writer);
@@ -65,442 +56,44 @@ RemoteSource* source_new(int fd, bool passive_fd, char *name, Writer *writer) {
         if (!source)
                 return NULL;
 
-        source->fd = fd;
-        source->passive_fd = passive_fd;
-        source->name = name;
+        source->importer.fd = fd;
+        source->importer.passive_fd = passive_fd;
+        source->importer.name = name;
+
         source->writer = writer;
 
         return source;
 }
 
-static char* realloc_buffer(RemoteSource *source, size_t size) {
-        char *b, *old = source->buf;
-
-        b = GREEDY_REALLOC(source->buf, source->size, size);
-        if (!b)
-                return NULL;
-
-        iovw_rebase(&source->iovw, old, source->buf);
-
-        return b;
-}
-
-static int get_line(RemoteSource *source, char **line, size_t *size) {
-        ssize_t n;
-        char *c = NULL;
-
-        assert(source);
-        assert(source->state == STATE_LINE);
-        assert(source->offset <= source->filled);
-        assert(source->filled <= source->size);
-        assert(source->buf == NULL || source->size > 0);
-        assert(source->fd >= 0);
-
-        for (;;) {
-                if (source->buf) {
-                        size_t start = MAX(source->scanned, source->offset);
-
-                        c = memchr(source->buf + start, '\n',
-                                   source->filled - start);
-                        if (c != NULL)
-                                break;
-                }
-
-                source->scanned = source->filled;
-                if (source->scanned >= DATA_SIZE_MAX) {
-                        log_error("Entry is bigger than %u bytes.", DATA_SIZE_MAX);
-                        return -E2BIG;
-                }
-
-                if (source->passive_fd)
-                        /* we have to wait for some data to come to us */
-                        return -EAGAIN;
-
-                /* We know that source->filled is at most DATA_SIZE_MAX, so if
-                   we reallocate it, we'll increase the size at least a bit. */
-                assert_cc(DATA_SIZE_MAX < ENTRY_SIZE_MAX);
-                if (source->size - source->filled < LINE_CHUNK &&
-                    !realloc_buffer(source, MIN(source->filled + LINE_CHUNK, ENTRY_SIZE_MAX)))
-                                return log_oom();
-
-                assert(source->buf);
-                assert(source->size - source->filled >= LINE_CHUNK ||
-                       source->size == ENTRY_SIZE_MAX);
-
-                n = read(source->fd,
-                         source->buf + source->filled,
-                         source->size - source->filled);
-                if (n < 0) {
-                        if (errno != EAGAIN)
-                                log_error_errno(errno, "read(%d, ..., %zu): %m",
-                                                source->fd,
-                                                source->size - source->filled);
-                        return -errno;
-                } else if (n == 0)
-                        return 0;
-
-                source->filled += n;
-        }
-
-        *line = source->buf + source->offset;
-        *size = c + 1 - source->buf - source->offset;
-        source->offset += *size;
-
-        return 1;
-}
-
-int push_data(RemoteSource *source, const char *data, size_t size) {
-        assert(source);
-        assert(source->state != STATE_EOF);
-
-        if (!realloc_buffer(source, source->filled + size)) {
-                log_error("Failed to store received data of size %zu "
-                          "(in addition to existing %zu bytes with %zu filled): %s",
-                          size, source->size, source->filled, strerror(ENOMEM));
-                return -ENOMEM;
-        }
-
-        memcpy(source->buf + source->filled, data, size);
-        source->filled += size;
-
-        return 0;
-}
-
-static int fill_fixed_size(RemoteSource *source, void **data, size_t size) {
-
-        assert(source);
-        assert(source->state == STATE_DATA_START ||
-               source->state == STATE_DATA ||
-               source->state == STATE_DATA_FINISH);
-        assert(size <= DATA_SIZE_MAX);
-        assert(source->offset <= source->filled);
-        assert(source->filled <= source->size);
-        assert(source->buf != NULL || source->size == 0);
-        assert(source->buf == NULL || source->size > 0);
-        assert(source->fd >= 0);
-        assert(data);
-
-        while (source->filled - source->offset < size) {
-                int n;
-
-                if (source->passive_fd)
-                        /* we have to wait for some data to come to us */
-                        return -EAGAIN;
-
-                if (!realloc_buffer(source, source->offset + size))
-                        return log_oom();
-
-                n = read(source->fd, source->buf + source->filled,
-                         source->size - source->filled);
-                if (n < 0) {
-                        if (errno != EAGAIN)
-                                log_error_errno(errno, "read(%d, ..., %zu): %m", source->fd,
-                                                source->size - source->filled);
-                        return -errno;
-                } else if (n == 0)
-                        return 0;
-
-                source->filled += n;
-        }
-
-        *data = source->buf + source->offset;
-        source->offset += size;
-
-        return 1;
-}
-
-static int get_data_size(RemoteSource *source) {
-        int r;
-        void *data;
-
-        assert(source);
-        assert(source->state == STATE_DATA_START);
-        assert(source->data_size == 0);
-
-        r = fill_fixed_size(source, &data, sizeof(uint64_t));
-        if (r <= 0)
-                return r;
-
-        source->data_size = le64toh( *(uint64_t *) data );
-        if (source->data_size > DATA_SIZE_MAX) {
-                log_error("Stream declares field with size %zu > DATA_SIZE_MAX = %u",
-                          source->data_size, DATA_SIZE_MAX);
-                return -EINVAL;
-        }
-        if (source->data_size == 0)
-                log_warning("Binary field with zero length");
-
-        return 1;
-}
-
-static int get_data_data(RemoteSource *source, void **data) {
-        int r;
-
-        assert(source);
-        assert(data);
-        assert(source->state == STATE_DATA);
-
-        r = fill_fixed_size(source, data, source->data_size);
-        if (r <= 0)
-                return r;
-
-        return 1;
-}
-
-static int get_data_newline(RemoteSource *source) {
-        int r;
-        char *data;
-
-        assert(source);
-        assert(source->state == STATE_DATA_FINISH);
-
-        r = fill_fixed_size(source, (void**) &data, 1);
-        if (r <= 0)
-                return r;
-
-        assert(data);
-        if (*data != '\n') {
-                log_error("expected newline, got '%c'", *data);
-                return -EINVAL;
-        }
-
-        return 1;
-}
-
-static int process_dunder(RemoteSource *source, char *line, size_t n) {
-        const char *timestamp;
-        int r;
-
-        assert(line);
-        assert(n > 0);
-        assert(line[n-1] == '\n');
-
-        /* XXX: is it worth to support timestamps in extended format?
-         * We don't produce them, but who knows... */
-
-        timestamp = startswith(line, "__CURSOR=");
-        if (timestamp)
-                /* ignore __CURSOR */
-                return 1;
-
-        timestamp = startswith(line, "__REALTIME_TIMESTAMP=");
-        if (timestamp) {
-                long long unsigned x;
-                line[n-1] = '\0';
-                r = safe_atollu(timestamp, &x);
-                if (r < 0)
-                        log_warning("Failed to parse __REALTIME_TIMESTAMP: '%s'", timestamp);
-                else
-                        source->ts.realtime = x;
-                return r < 0 ? r : 1;
-        }
-
-        timestamp = startswith(line, "__MONOTONIC_TIMESTAMP=");
-        if (timestamp) {
-                long long unsigned x;
-                line[n-1] = '\0';
-                r = safe_atollu(timestamp, &x);
-                if (r < 0)
-                        log_warning("Failed to parse __MONOTONIC_TIMESTAMP: '%s'", timestamp);
-                else
-                        source->ts.monotonic = x;
-                return r < 0 ? r : 1;
-        }
-
-        timestamp = startswith(line, "__");
-        if (timestamp) {
-                log_notice("Unknown dunder line %s", line);
-                return 1;
-        }
-
-        /* no dunder */
-        return 0;
-}
-
-static int process_data(RemoteSource *source) {
-        int r;
-
-        switch(source->state) {
-        case STATE_LINE: {
-                char *line, *sep;
-                size_t n = 0;
-
-                assert(source->data_size == 0);
-
-                r = get_line(source, &line, &n);
-                if (r < 0)
-                        return r;
-                if (r == 0) {
-                        source->state = STATE_EOF;
-                        return r;
-                }
-                assert(n > 0);
-                assert(line[n-1] == '\n');
-
-                if (n == 1) {
-                        log_trace("Received empty line, event is ready");
-                        return 1;
-                }
-
-                r = process_dunder(source, line, n);
-                if (r != 0)
-                        return r < 0 ? r : 0;
-
-                /* MESSAGE=xxx\n
-                   or
-                   COREDUMP\n
-                   LLLLLLLL0011223344...\n
-                */
-                sep = memchr(line, '=', n);
-                if (sep) {
-                        /* chomp newline */
-                        n--;
-
-                        r = iovw_put(&source->iovw, line, n);
-                        if (r < 0)
-                                return r;
-                } else {
-                        /* replace \n with = */
-                        line[n-1] = '=';
-
-                        source->field_len = n;
-                        source->state = STATE_DATA_START;
-
-                        /* we cannot put the field in iovec until we have all data */
-                }
-
-                log_trace("Received: %.*s (%s)", (int) n, line, sep ? "text" : "binary");
-
-                return 0; /* continue */
-        }
-
-        case STATE_DATA_START:
-                assert(source->data_size == 0);
-
-                r = get_data_size(source);
-                // log_debug("get_data_size() -> %d", r);
-                if (r < 0)
-                        return r;
-                if (r == 0) {
-                        source->state = STATE_EOF;
-                        return 0;
-                }
-
-                source->state = source->data_size > 0 ?
-                        STATE_DATA : STATE_DATA_FINISH;
-
-                return 0; /* continue */
-
-        case STATE_DATA: {
-                void *data;
-                char *field;
-
-                assert(source->data_size > 0);
-
-                r = get_data_data(source, &data);
-                // log_debug("get_data_data() -> %d", r);
-                if (r < 0)
-                        return r;
-                if (r == 0) {
-                        source->state = STATE_EOF;
-                        return 0;
-                }
-
-                assert(data);
-
-                field = (char*) data - sizeof(uint64_t) - source->field_len;
-                memmove(field + sizeof(uint64_t), field, source->field_len);
-
-                r = iovw_put(&source->iovw, field + sizeof(uint64_t), source->field_len + source->data_size);
-                if (r < 0)
-                        return r;
-
-                source->state = STATE_DATA_FINISH;
-
-                return 0; /* continue */
-        }
-
-        case STATE_DATA_FINISH:
-                r = get_data_newline(source);
-                // log_debug("get_data_newline() -> %d", r);
-                if (r < 0)
-                        return r;
-                if (r == 0) {
-                        source->state = STATE_EOF;
-                        return 0;
-                }
-
-                source->data_size = 0;
-                source->state = STATE_LINE;
-
-                return 0; /* continue */
-        default:
-                assert_not_reached("wtf?");
-        }
-}
-
 int process_source(RemoteSource *source, bool compress, bool seal) {
-        size_t remain, target;
         int r;
 
         assert(source);
         assert(source->writer);
 
-        r = process_data(source);
+        r = journal_importer_process_data(&source->importer);
         if (r <= 0)
                 return r;
 
         /* We have a full event */
         log_trace("Received full event from source@%p fd:%d (%s)",
-                  source, source->fd, source->name);
+                  source, source->importer.fd, source->importer.name);
 
-        if (!source->iovw.count) {
+        if (source->importer.iovw.count == 0) {
                 log_warning("Entry with no payload, skipping");
                 goto freeing;
         }
 
-        assert(source->iovw.iovec);
-        assert(source->iovw.count);
+        assert(source->importer.iovw.iovec);
 
-        r = writer_write(source->writer, &source->iovw, &source->ts, compress, seal);
+        r = writer_write(source->writer, &source->importer.iovw, &source->importer.ts, compress, seal);
         if (r < 0)
                 log_error_errno(r, "Failed to write entry of %zu bytes: %m",
-                                iovw_size(&source->iovw));
+                                iovw_size(&source->importer.iovw));
         else
                 r = 1;
 
  freeing:
-        iovw_free_contents(&source->iovw);
-
-        /* possibly reset buffer position */
-        remain = source->filled - source->offset;
-
-        if (remain == 0) /* no brainer */
-                source->offset = source->scanned = source->filled = 0;
-        else if (source->offset > source->size - source->filled &&
-                 source->offset > remain) {
-                memcpy(source->buf, source->buf + source->offset, remain);
-                source->offset = source->scanned = 0;
-                source->filled = remain;
-        }
-
-        target = source->size;
-        while (target > 16 * LINE_CHUNK && source->filled < target / 2)
-                target /= 2;
-        if (target < source->size) {
-                char *tmp;
-
-                tmp = realloc(source->buf, target);
-                if (!tmp)
-                        log_warning("Failed to reallocate buffer to (smaller) size %zu",
-                                    target);
-                else {
-                        log_debug("Reallocated buffer from %zu to %zu bytes",
-                                  source->size, target);
-                        source->buf = tmp;
-                        source->size = target;
-                }
-        }
-
+        journal_importer_drop_iovw(&source->importer);
         return r;
 }