diff options
Diffstat (limited to 'libnetdata/log/systemd-cat-native.c')
| -rw-r--r-- | libnetdata/log/systemd-cat-native.c | 820 |
1 files changed, 820 insertions, 0 deletions
diff --git a/libnetdata/log/systemd-cat-native.c b/libnetdata/log/systemd-cat-native.c new file mode 100644 index 000000000..de6211cc0 --- /dev/null +++ b/libnetdata/log/systemd-cat-native.c @@ -0,0 +1,820 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "systemd-cat-native.h" +#include "../required_dummies.h" + +#ifdef __FreeBSD__ +#include <sys/endian.h> +#endif + +#ifdef __APPLE__ +#include <machine/endian.h> +#endif + +static void log_message_to_stderr(BUFFER *msg) { + CLEAN_BUFFER *tmp = buffer_create(0, NULL); + + for(size_t i = 0; i < msg->len ;i++) { + if(isprint(msg->buffer[i])) + buffer_putc(tmp, msg->buffer[i]); + else { + buffer_putc(tmp, '['); + buffer_print_uint64_hex(tmp, msg->buffer[i]); + buffer_putc(tmp, ']'); + } + } + + fprintf(stderr, "SENDING: %s\n", buffer_tostring(tmp)); +} + +static inline buffered_reader_ret_t get_next_line(struct buffered_reader *reader, BUFFER *line, int timeout_ms) { + while(true) { + if(unlikely(!buffered_reader_next_line(reader, line))) { + buffered_reader_ret_t ret = buffered_reader_read_timeout(reader, STDIN_FILENO, timeout_ms, false); + if(unlikely(ret != BUFFERED_READER_READ_OK)) + return ret; + + continue; + } + else { + // make sure the buffer is NULL terminated + line->buffer[line->len] = '\0'; + + // remove the trailing newlines + while(line->len && line->buffer[line->len - 1] == '\n') + line->buffer[--line->len] = '\0'; + + return BUFFERED_READER_READ_OK; + } + } +} + +static inline size_t copy_replacing_newlines(char *dst, size_t dst_len, const char *src, size_t src_len, const char *newline) { + if (!dst || !src) return 0; + + const char *current_src = src; + const char *src_end = src + src_len; // Pointer to the end of src + char *current_dst = dst; + size_t remaining_dst_len = dst_len; + size_t newline_len = newline && *newline ? strlen(newline) : 0; + + size_t bytes_copied = 0; // To track the number of bytes copied + + while (remaining_dst_len > 1 && current_src < src_end) { + if (newline_len > 0) { + const char *found = strstr(current_src, newline); + if (found && found < src_end) { + size_t copy_len = found - current_src; + if (copy_len >= remaining_dst_len) copy_len = remaining_dst_len - 1; + + memcpy(current_dst, current_src, copy_len); + current_dst += copy_len; + *current_dst++ = '\n'; + remaining_dst_len -= (copy_len + 1); + bytes_copied += copy_len + 1; // +1 for the newline character + current_src = found + newline_len; + continue; + } + } + + // Copy the remaining part of src to dst + size_t copy_len = src_end - current_src; + if (copy_len >= remaining_dst_len) copy_len = remaining_dst_len - 1; + + memcpy(current_dst, current_src, copy_len); + current_dst += copy_len; + remaining_dst_len -= copy_len; + bytes_copied += copy_len; + break; + } + + // Ensure the string is null-terminated + *current_dst = '\0'; + + return bytes_copied; +} + +static inline void buffer_memcat_replacing_newlines(BUFFER *wb, const char *src, size_t src_len, const char *newline) { + if(!src) return; + + const char *equal; + if(!newline || !*newline || !strstr(src, newline) || !(equal = strchr(src, '='))) { + buffer_memcat(wb, src, src_len); + buffer_putc(wb, '\n'); + return; + } + + size_t key_len = equal - src; + buffer_memcat(wb, src, key_len); + buffer_putc(wb, '\n'); + + char *length_ptr = &wb->buffer[wb->len]; + uint64_t le_size = 0; + buffer_memcat(wb, &le_size, sizeof(le_size)); + + const char *value = ++equal; + size_t value_len = src_len - key_len - 1; + buffer_need_bytes(wb, value_len + 1); + size_t size = copy_replacing_newlines(&wb->buffer[wb->len], value_len + 1, value, value_len, newline); + wb->len += size; + buffer_putc(wb, '\n'); + + le_size = htole64(size); + memcpy(length_ptr, &le_size, sizeof(le_size)); +} + +// ---------------------------------------------------------------------------- +// log to a systemd-journal-remote + +#ifdef HAVE_CURL +#include <curl/curl.h> + +#ifndef HOST_NAME_MAX +#define HOST_NAME_MAX 256 +#endif + +char global_hostname[HOST_NAME_MAX] = ""; +char global_boot_id[UUID_COMPACT_STR_LEN] = ""; +char global_machine_id[UUID_COMPACT_STR_LEN] = ""; +char global_stream_id[UUID_COMPACT_STR_LEN] = ""; +char global_namespace[1024] = ""; +char global_systemd_invocation_id[1024] = ""; +#define BOOT_ID_PATH "/proc/sys/kernel/random/boot_id" +#define MACHINE_ID_PATH "/etc/machine-id" + +#define DEFAULT_PRIVATE_KEY "/etc/ssl/private/journal-upload.pem" +#define DEFAULT_PUBLIC_KEY "/etc/ssl/certs/journal-upload.pem" +#define DEFAULT_CA_CERT "/etc/ssl/ca/trusted.pem" + +struct upload_data { + char *data; + size_t length; +}; + +static size_t systemd_journal_remote_read_callback(void *ptr, size_t size, size_t nmemb, void *userp) { + struct upload_data *upload = (struct upload_data *)userp; + size_t buffer_size = size * nmemb; + + if (upload->length) { + size_t copy_size = upload->length < buffer_size ? upload->length : buffer_size; + memcpy(ptr, upload->data, copy_size); + upload->data += copy_size; + upload->length -= copy_size; + return copy_size; + } + + return 0; +} + +CURL* initialize_connection_to_systemd_journal_remote(const char* url, const char* private_key, const char* public_key, const char* ca_cert, struct curl_slist **headers) { + CURL *curl = curl_easy_init(); + if (!curl) { + fprintf(stderr, "Failed to initialize curl\n"); + return NULL; + } + + *headers = curl_slist_append(*headers, "Content-Type: application/vnd.fdo.journal"); + *headers = curl_slist_append(*headers, "Transfer-Encoding: chunked"); + curl_easy_setopt(curl, CURLOPT_HTTPHEADER, *headers); + curl_easy_setopt(curl, CURLOPT_URL, url); + curl_easy_setopt(curl, CURLOPT_POST, 1L); + curl_easy_setopt(curl, CURLOPT_READFUNCTION, systemd_journal_remote_read_callback); + + if (strncmp(url, "https://", 8) == 0) { + if (private_key) curl_easy_setopt(curl, CURLOPT_SSLKEY, private_key); + if (public_key) curl_easy_setopt(curl, CURLOPT_SSLCERT, public_key); + + if (strcmp(ca_cert, "all") != 0) { + curl_easy_setopt(curl, CURLOPT_CAINFO, ca_cert); + } else { + curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L); + } + } + // curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); // Remove for less verbose output + + return curl; +} + +static void journal_remote_complete_event(BUFFER *msg, usec_t *monotonic_ut) { + usec_t ut = now_monotonic_usec(); + + if(monotonic_ut) + *monotonic_ut = ut; + + buffer_sprintf(msg, + "" + "__REALTIME_TIMESTAMP=%llu\n" + "__MONOTONIC_TIMESTAMP=%llu\n" + "_MACHINE_ID=%s\n" + "_BOOT_ID=%s\n" + "_HOSTNAME=%s\n" + "_TRANSPORT=stdout\n" + "_LINE_BREAK=nul\n" + "_STREAM_ID=%s\n" + "_RUNTIME_SCOPE=system\n" + "%s%s\n" + , now_realtime_usec() + , ut + , global_machine_id + , global_boot_id + , global_hostname + , global_stream_id + , global_namespace + , global_systemd_invocation_id + ); +} + +static CURLcode journal_remote_send_buffer(CURL* curl, BUFFER *msg) { + + // log_message_to_stderr(msg); + + struct upload_data upload = {0}; + + if (!curl || !buffer_strlen(msg)) + return CURLE_FAILED_INIT; + + upload.data = (char *) buffer_tostring(msg); + upload.length = buffer_strlen(msg); + + curl_easy_setopt(curl, CURLOPT_READDATA, &upload); + curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)upload.length); + + return curl_easy_perform(curl); +} + +typedef enum { + LOG_TO_JOURNAL_REMOTE_BAD_PARAMS = -1, + LOG_TO_JOURNAL_REMOTE_CANNOT_INITIALIZE = -2, + LOG_TO_JOURNAL_REMOTE_CANNOT_SEND = -3, + LOG_TO_JOURNAL_REMOTE_CANNOT_READ = -4, +} log_to_journal_remote_ret_t; + +static log_to_journal_remote_ret_t log_input_to_journal_remote(const char *url, const char *key, const char *cert, const char *trust, const char *newline, int timeout_ms) { + if(!url || !*url) { + fprintf(stderr, "No URL is given.\n"); + return LOG_TO_JOURNAL_REMOTE_BAD_PARAMS; + } + + if(timeout_ms < 10) + timeout_ms = 10; + + global_boot_id[0] = '\0'; + char buffer[1024]; + if(read_file(BOOT_ID_PATH, buffer, sizeof(buffer)) == 0) { + uuid_t uuid; + if(uuid_parse_flexi(buffer, uuid) == 0) + uuid_unparse_lower_compact(uuid, global_boot_id); + else + fprintf(stderr, "WARNING: cannot parse the UUID found in '%s'.\n", BOOT_ID_PATH); + } + + if(global_boot_id[0] == '\0') { + fprintf(stderr, "WARNING: cannot read '%s'. Will generate a random _BOOT_ID.\n", BOOT_ID_PATH); + uuid_t uuid; + uuid_generate_random(uuid); + uuid_unparse_lower_compact(uuid, global_boot_id); + } + + if(read_file(MACHINE_ID_PATH, buffer, sizeof(buffer)) == 0) { + uuid_t uuid; + if(uuid_parse_flexi(buffer, uuid) == 0) + uuid_unparse_lower_compact(uuid, global_machine_id); + else + fprintf(stderr, "WARNING: cannot parse the UUID found in '%s'.\n", MACHINE_ID_PATH); + } + + if(global_machine_id[0] == '\0') { + fprintf(stderr, "WARNING: cannot read '%s'. Will generate a random _MACHINE_ID.\n", MACHINE_ID_PATH); + uuid_t uuid; + uuid_generate_random(uuid); + uuid_unparse_lower_compact(uuid, global_boot_id); + } + + if(global_stream_id[0] == '\0') { + uuid_t uuid; + uuid_generate_random(uuid); + uuid_unparse_lower_compact(uuid, global_stream_id); + } + + if(global_hostname[0] == '\0') { + if(gethostname(global_hostname, sizeof(global_hostname)) != 0) { + fprintf(stderr, "WARNING: cannot get system's hostname. Will use internal default.\n"); + snprintfz(global_hostname, sizeof(global_hostname), "systemd-cat-native-unknown-hostname"); + } + } + + if(global_systemd_invocation_id[0] == '\0' && getenv("INVOCATION_ID")) + snprintfz(global_systemd_invocation_id, sizeof(global_systemd_invocation_id), "_SYSTEMD_INVOCATION_ID=%s\n", getenv("INVOCATION_ID")); + + if(!key) + key = DEFAULT_PRIVATE_KEY; + + if(!cert) + cert = DEFAULT_PUBLIC_KEY; + + if(!trust) + trust = DEFAULT_CA_CERT; + + char full_url[4096]; + snprintfz(full_url, sizeof(full_url), "%s/upload", url); + + CURL *curl; + CURLcode res = CURLE_OK; + struct curl_slist *headers = NULL; + + curl_global_init(CURL_GLOBAL_ALL); + curl = initialize_connection_to_systemd_journal_remote(full_url, key, cert, trust, &headers); + + if(!curl) + return LOG_TO_JOURNAL_REMOTE_CANNOT_INITIALIZE; + + struct buffered_reader reader; + buffered_reader_init(&reader); + CLEAN_BUFFER *line = buffer_create(sizeof(reader.read_buffer), NULL); + CLEAN_BUFFER *msg = buffer_create(sizeof(reader.read_buffer), NULL); + + size_t msg_full_events = 0; + size_t msg_partial_fields = 0; + usec_t msg_started_ut = 0; + size_t failures = 0; + size_t messages_logged = 0; + + log_to_journal_remote_ret_t ret = 0; + + while(true) { + buffered_reader_ret_t rc = get_next_line(&reader, line, timeout_ms); + if(rc == BUFFERED_READER_READ_POLL_TIMEOUT) { + if(msg_full_events && !msg_partial_fields) { + res = journal_remote_send_buffer(curl, msg); + if(res != CURLE_OK) { + fprintf(stderr, "journal_remote_send_buffer() failed: %s\n", curl_easy_strerror(res)); + failures++; + ret = LOG_TO_JOURNAL_REMOTE_CANNOT_SEND; + goto cleanup; + } + else + messages_logged++; + + msg_full_events = 0; + buffer_flush(msg); + } + } + else if(rc == BUFFERED_READER_READ_OK) { + if(!line->len) { + // an empty line - we are done for this message + if(msg_partial_fields) { + msg_partial_fields = 0; + + usec_t ut; + journal_remote_complete_event(msg, &ut); + if(!msg_full_events) + msg_started_ut = ut; + + msg_full_events++; + + if(ut - msg_started_ut >= USEC_PER_SEC / 2) { + res = journal_remote_send_buffer(curl, msg); + if(res != CURLE_OK) { + fprintf(stderr, "journal_remote_send_buffer() failed: %s\n", curl_easy_strerror(res)); + failures++; + ret = LOG_TO_JOURNAL_REMOTE_CANNOT_SEND; + goto cleanup; + } + else + messages_logged++; + + msg_full_events = 0; + buffer_flush(msg); + } + } + } + else { + buffer_memcat_replacing_newlines(msg, line->buffer, line->len, newline); + msg_partial_fields++; + } + + buffer_flush(line); + } + else { + fprintf(stderr, "cannot read input data, failed with code %d\n", rc); + ret = LOG_TO_JOURNAL_REMOTE_CANNOT_READ; + break; + } + } + + if (msg_full_events || msg_partial_fields) { + if(msg_partial_fields) { + msg_partial_fields = 0; + msg_full_events++; + journal_remote_complete_event(msg, NULL); + } + + if(msg_full_events) { + res = journal_remote_send_buffer(curl, msg); + if(res != CURLE_OK) { + fprintf(stderr, "journal_remote_send_buffer() failed: %s\n", curl_easy_strerror(res)); + failures++; + } + else + messages_logged++; + + msg_full_events = 0; + buffer_flush(msg); + } + } + +cleanup: + curl_easy_cleanup(curl); + curl_slist_free_all(headers); + curl_global_cleanup(); + + return ret; +} + +#endif + +static int help(void) { + fprintf(stderr, + "\n" + "Netdata systemd-cat-native " PACKAGE_VERSION "\n" + "\n" + "This program reads from its standard input, lines in the format:\n" + "\n" + "KEY1=VALUE1\\n\n" + "KEY2=VALUE2\\n\n" + "KEYN=VALUEN\\n\n" + "\\n\n" + "\n" + "and sends them to systemd-journal.\n" + "\n" + " - Binary journal fields are not accepted at its input\n" + " - Binary journal fields can be generated after newline processing\n" + " - Messages have to be separated by an empty line\n" + " - Keys starting with underscore are not accepted (by journald)\n" + " - Other rules imposed by systemd-journald are imposed (by journald)\n" + "\n" + "Usage:\n" + "\n" + " %s\n" + " [--newline=STRING]\n" + " [--log-as-netdata|-N]\n" + " [--namespace=NAMESPACE] [--socket=PATH]\n" +#ifdef HAVE_CURL + " [--url=URL [--key=FILENAME] [--cert=FILENAME] [--trust=FILENAME|all]]\n" +#endif + "\n" + "The program has the following modes of logging:\n" + "\n" + " * Log to a local systemd-journald or stderr\n" + "\n" + " This is the default mode. If systemd-journald is available, logs will be\n" + " sent to systemd, otherwise logs will be printed on stderr, using logfmt\n" + " formatting. Options --socket and --namespace are available to configure\n" + " the journal destination:\n" + "\n" + " --socket=PATH\n" + " The path of a systemd-journald UNIX socket.\n" + " The program will use the default systemd-journald socket when this\n" + " option is not used.\n" + "\n" + " --namespace=NAMESPACE\n" + " The name of a configured and running systemd-journald namespace.\n" + " The program will produce the socket path based on its internal\n" + " defaults, to send the messages to the systemd journal namespace.\n" + "\n" + " * Log as Netdata, enabled with --log-as-netdata or -N\n" + "\n" + " In this mode the program uses environment variables set by Netdata for\n" + " the log destination. Only log fields defined by Netdata are accepted.\n" + " If the environment variables expected by Netdata are not found, it\n" + " falls back to stderr logging in logfmt format.\n" +#ifdef HAVE_CURL + "\n" + " * Log to a systemd-journal-remote TCP socket, enabled with --url=URL\n" + "\n" + " In this mode, the program will directly sent logs to a remote systemd\n" + " journal (systemd-journal-remote expected at the destination)\n" + " This mode is available even when the local system does not support\n" + " systemd, or even it is not Linux, allowing a remote Linux systemd\n" + " journald to become the logs database of the local system.\n" + "\n" + " Unfortunately systemd-journal-remote does not accept compressed\n" + " data over the network, so the stream will be uncompressed.\n" + "\n" + " --url=URL\n" + " The destination systemd-journal-remote address and port, similarly\n" + " to what /etc/systemd/journal-upload.conf accepts.\n" + " Usually it is in the form: https://ip.address:19532\n" + " Both http and https URLs are accepted. When using https, the\n" + " following additional options are accepted:\n" + "\n" + " --key=FILENAME\n" + " The filename of the private key of the server.\n" + " The default is: " DEFAULT_PRIVATE_KEY "\n" + "\n" + " --cert=FILENAME\n" + " The filename of the public key of the server.\n" + " The default is: " DEFAULT_PUBLIC_KEY "\n" + "\n" + " --trust=FILENAME | all\n" + " The filename of the trusted CA public key.\n" + " The default is: " DEFAULT_CA_CERT "\n" + " The keyword 'all' can be used to trust all CAs.\n" + "\n" + " --namespace=NAMESPACE\n" + " Set the namespace of the messages sent.\n" + "\n" + " --keep-trying\n" + " Keep trying to send the message, if the remote journal is not there.\n" +#endif + "\n" + " NEWLINES PROCESSING\n" + " systemd-journal logs entries may have newlines in them. However the\n" + " Journal Export Format uses binary formatted data to achieve this,\n" + " making it hard for text processing.\n" + "\n" + " To overcome this limitation, this program allows single-line text\n" + " formatted values at its input, to be binary formatted multi-line Journal\n" + " Export Format at its output.\n" + "\n" + " To achieve that it allows replacing a given string to a newline.\n" + " The parameter --newline=STRING allows setting the string to be replaced\n" + " with newlines.\n" + "\n" + " For example by setting --newline='--NEWLINE--', the program will replace\n" + " all occurrences of --NEWLINE-- with the newline character, within each\n" + " VALUE of the KEY=VALUE lines. Once this this done, the program will\n" + " switch the field to the binary Journal Export Format before sending the\n" + " log event to systemd-journal.\n" + "\n", + program_name); + + return 1; +} + +// ---------------------------------------------------------------------------- +// log as Netdata + +static void lgs_reset(struct log_stack_entry *lgs) { + for(size_t i = 1; i < _NDF_MAX ;i++) { + if(lgs[i].type == NDFT_TXT && lgs[i].set && lgs[i].txt) + freez((void *)lgs[i].txt); + + lgs[i] = ND_LOG_FIELD_TXT(i, NULL); + } + + lgs[0] = ND_LOG_FIELD_TXT(NDF_MESSAGE, NULL); + lgs[_NDF_MAX] = ND_LOG_FIELD_END(); +} + +static const char *strdupz_replacing_newlines(const char *src, const char *newline) { + if(!src) src = ""; + + size_t src_len = strlen(src); + char *buffer = mallocz(src_len + 1); + copy_replacing_newlines(buffer, src_len + 1, src, src_len, newline); + return buffer; +} + +static int log_input_as_netdata(const char *newline, int timeout_ms) { + struct buffered_reader reader; + buffered_reader_init(&reader); + CLEAN_BUFFER *line = buffer_create(sizeof(reader.read_buffer), NULL); + + ND_LOG_STACK lgs[_NDF_MAX + 1] = { 0 }; + ND_LOG_STACK_PUSH(lgs); + lgs_reset(lgs); + + size_t fields_added = 0; + size_t messages_logged = 0; + ND_LOG_FIELD_PRIORITY priority = NDLP_INFO; + + while(get_next_line(&reader, line, timeout_ms) == BUFFERED_READER_READ_OK) { + if(!line->len) { + // an empty line - we are done for this message + + nd_log(NDLS_HEALTH, priority, + "added %d fields", // if the user supplied a MESSAGE, this will be ignored + fields_added); + + lgs_reset(lgs); + fields_added = 0; + messages_logged++; + } + else { + char *equal = strchr(line->buffer, '='); + if(equal) { + const char *field = line->buffer; + size_t field_len = equal - line->buffer; + ND_LOG_FIELD_ID id = nd_log_field_id_by_name(field, field_len); + if(id != NDF_STOP) { + const char *value = ++equal; + + if(lgs[id].txt) + freez((void *) lgs[id].txt); + + lgs[id].txt = strdupz_replacing_newlines(value, newline); + lgs[id].set = true; + + fields_added++; + + if(id == NDF_PRIORITY) + priority = nd_log_priority2id(value); + } + else { + struct log_stack_entry backup = lgs[NDF_MESSAGE]; + lgs[NDF_MESSAGE] = ND_LOG_FIELD_TXT(NDF_MESSAGE, NULL); + + nd_log(NDLS_COLLECTORS, NDLP_ERR, + "Field '%.*s' is not a Netdata field. Ignoring it.", + field_len, field); + + lgs[NDF_MESSAGE] = backup; + } + } + else { + struct log_stack_entry backup = lgs[NDF_MESSAGE]; + lgs[NDF_MESSAGE] = ND_LOG_FIELD_TXT(NDF_MESSAGE, NULL); + + nd_log(NDLS_COLLECTORS, NDLP_ERR, + "Line does not contain an = sign; ignoring it: %s", + line->buffer); + + lgs[NDF_MESSAGE] = backup; + } + } + + buffer_flush(line); + } + + if(fields_added) { + nd_log(NDLS_HEALTH, priority, "added %d fields", fields_added); + messages_logged++; + } + + return messages_logged ? 0 : 1; +} + +// ---------------------------------------------------------------------------- +// log to a local systemd-journald + +static bool journal_local_send_buffer(int fd, BUFFER *msg) { + // log_message_to_stderr(msg); + + bool ret = journal_direct_send(fd, msg->buffer, msg->len); + if (!ret) + fprintf(stderr, "Cannot send message to systemd journal.\n"); + + return ret; +} + +static int log_input_to_journal(const char *socket, const char *namespace, const char *newline, int timeout_ms) { + char path[FILENAME_MAX + 1]; + int fd = -1; + + if(socket) + snprintfz(path, sizeof(path), "%s", socket); + else + journal_construct_path(path, sizeof(path), NULL, namespace); + + fd = journal_direct_fd(path); + if (fd == -1) { + fprintf(stderr, "Cannot open '%s' as a UNIX socket (errno = %d)\n", + path, errno); + return 1; + } + + struct buffered_reader reader; + buffered_reader_init(&reader); + CLEAN_BUFFER *line = buffer_create(sizeof(reader.read_buffer), NULL); + CLEAN_BUFFER *msg = buffer_create(sizeof(reader.read_buffer), NULL); + + size_t messages_logged = 0; + size_t failed_messages = 0; + + while(get_next_line(&reader, line, timeout_ms) == BUFFERED_READER_READ_OK) { + if (!line->len) { + // an empty line - we are done for this message + if (msg->len) { + if(journal_local_send_buffer(fd, msg)) + messages_logged++; + else { + failed_messages++; + goto cleanup; + } + } + + buffer_flush(msg); + } + else + buffer_memcat_replacing_newlines(msg, line->buffer, line->len, newline); + + buffer_flush(line); + } + + if (msg && msg->len) { + if(journal_local_send_buffer(fd, msg)) + messages_logged++; + else + failed_messages++; + } + +cleanup: + return !failed_messages && messages_logged ? 0 : 1; +} + +int main(int argc, char *argv[]) { + clocks_init(); + nd_log_initialize_for_external_plugins(argv[0]); + + int timeout_ms = -1; // wait forever + bool log_as_netdata = false; + const char *newline = NULL; + const char *namespace = NULL; + const char *socket = getenv("NETDATA_SYSTEMD_JOURNAL_PATH"); +#ifdef HAVE_CURL + const char *url = NULL; + const char *key = NULL; + const char *cert = NULL; + const char *trust = NULL; + bool keep_trying = false; +#endif + + for(int i = 1; i < argc ;i++) { + const char *k = argv[i]; + + if(strcmp(k, "--help") == 0 || strcmp(k, "-h") == 0) + return help(); + + else if(strcmp(k, "--log-as-netdata") == 0 || strcmp(k, "-N") == 0) + log_as_netdata = true; + + else if(strncmp(k, "--namespace=", 12) == 0) + namespace = &k[12]; + + else if(strncmp(k, "--socket=", 9) == 0) + socket = &k[9]; + + else if(strncmp(k, "--newline=", 10) == 0) + newline = &k[10]; + +#ifdef HAVE_CURL + else if (strncmp(k, "--url=", 6) == 0) + url = &k[6]; + + else if (strncmp(k, "--key=", 6) == 0) + key = &k[6]; + + else if (strncmp(k, "--cert=", 7) == 0) + cert = &k[7]; + + else if (strncmp(k, "--trust=", 8) == 0) + trust = &k[8]; + + else if (strcmp(k, "--keep-trying") == 0) + keep_trying = true; +#endif + else { + fprintf(stderr, "Unknown parameter '%s'\n", k); + return 1; + } + } + +#ifdef HAVE_CURL + if(log_as_netdata && url) { + fprintf(stderr, "Cannot log to a systemd-journal-remote URL as Netdata. " + "Please either give --url or --log-as-netdata, not both.\n"); + return 1; + } + + if(socket && url) { + fprintf(stderr, "Cannot log to a systemd-journal-remote URL using a UNIX socket. " + "Please either give --url or --socket, not both.\n"); + return 1; + } + +#endif + + if(log_as_netdata && namespace) { + fprintf(stderr, "Cannot log as netdata using a namespace. " + "Please either give --log-as-netdata or --namespace, not both.\n"); + return 1; + } + + if(log_as_netdata) + return log_input_as_netdata(newline, timeout_ms); + +#ifdef HAVE_CURL + if(url) { + if(url && namespace && *namespace) + snprintfz(global_namespace, sizeof(global_namespace), "_NAMESPACE=%s\n", namespace); + + log_to_journal_remote_ret_t rc; + do { + rc = log_input_to_journal_remote(url, key, cert, trust, newline, timeout_ms); + } while(keep_trying && rc == LOG_TO_JOURNAL_REMOTE_CANNOT_SEND); + } +#endif + + return log_input_to_journal(socket, namespace, newline, timeout_ms); +} |