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-rw-r--r--collectors/plugins.d/plugins_d.c242
1 files changed, 200 insertions, 42 deletions
diff --git a/collectors/plugins.d/plugins_d.c b/collectors/plugins.d/plugins_d.c
index 66ec5d0ea..aea2704a3 100644
--- a/collectors/plugins.d/plugins_d.c
+++ b/collectors/plugins.d/plugins_d.c
@@ -117,6 +117,103 @@ inline int pluginsd_split_words(char *str, char **words, int max_words) {
return quoted_strings_splitter(str, words, max_words, pluginsd_space);
}
+#ifdef ENABLE_HTTPS
+/**
+ * Update Buffer
+ *
+ * Update the temporary buffer used to parse data received from slave
+ *
+ * @param output is a pointer to the vector where I will store the data
+ * @param ssl is the connection pointer with the server
+ *
+ * @return it returns the total of bytes read on success and a negative number otherwise
+ */
+int pluginsd_update_buffer(char *output, SSL *ssl) {
+ ERR_clear_error();
+ int bytesleft = SSL_read(ssl, output, PLUGINSD_LINE_MAX_SSL_READ);
+ if(bytesleft <= 0) {
+ int sslerrno = SSL_get_error(ssl, bytesleft);
+ switch(sslerrno) {
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ {
+ break;
+ }
+ default:
+ {
+ u_long err;
+ char buf[256];
+ int counter = 0;
+ while ((err = ERR_get_error()) != 0) {
+ ERR_error_string_n(err, buf, sizeof(buf));
+ info("%d SSL Handshake error (%s) on socket %d ", counter++, ERR_error_string((long)SSL_get_error(ssl, bytesleft), NULL), SSL_get_fd(ssl));
+ }
+ }
+
+ }
+ } else {
+ output[bytesleft] = '\0';
+ }
+
+ return bytesleft;
+}
+
+/**
+ * Get from Buffer
+ *
+ * Get data to process from buffer
+ *
+ * @param output is the output vector that will be used to parse the string.
+ * @param bytesread the amount of bytes read in the previous iteration.
+ * @param input the input vector where there are data to process
+ * @param ssl a pointer to the connection with the server
+ * @param src the first address of the input, because sometime will be necessary to restart the addr with it.
+ *
+ * @return It returns a pointer for the next iteration on success and NULL otherwise.
+ */
+char * pluginsd_get_from_buffer(char *output, int *bytesread, char *input, SSL *ssl, char *src) {
+ int copying = 1;
+ char *endbuffer;
+ size_t length;
+ while(copying) {
+ if(*bytesread > 0) {
+ endbuffer = strchr(input, '\n');
+ if(endbuffer) {
+ copying = 0;
+ endbuffer++; //Advance due the fact I wanna copy '\n'
+ length = endbuffer - input;
+ *bytesread -= length;
+
+ memcpy(output, input, length);
+ output += length;
+ *output = '\0';
+ input += length;
+ }else {
+ length = strlen(input);
+ memcpy(output, input, length);
+ output += length;
+ input = src;
+
+ *bytesread = pluginsd_update_buffer(input, ssl);
+ if(*bytesread <= 0) {
+ input = NULL;
+ copying = 0;
+ }
+ }
+ }else {
+ //reduce sample of bytes read, print the length
+ *bytesread = pluginsd_update_buffer(input, ssl);
+ if(*bytesread <= 0) {
+ input = NULL;
+ copying = 0;
+ }
+ }
+ }
+
+ return input;
+}
+#endif
+
inline size_t pluginsd_process(RRDHOST *host, struct plugind *cd, FILE *fp, int trust_durations) {
int enabled = cd->enabled;
@@ -149,10 +246,43 @@ inline size_t pluginsd_process(RRDHOST *host, struct plugind *cd, FILE *fp, int
goto cleanup;
}
+#ifdef ENABLE_HTTPS
+ int bytesleft = 0;
+ char tmpbuffer[PLUGINSD_LINE_MAX];
+ char *readfrom;
+#endif
+ char *r = NULL;
while(!ferror(fp)) {
if(unlikely(netdata_exit)) break;
- char *r = fgets(line, PLUGINSD_LINE_MAX, fp);
+#ifdef ENABLE_HTTPS
+ int normalread = 1;
+ if(netdata_srv_ctx) {
+ if(host->ssl.conn && !host->ssl.flags) {
+ if(!bytesleft) {
+ r = line;
+ readfrom = tmpbuffer;
+ bytesleft = pluginsd_update_buffer(readfrom, host->ssl.conn);
+ if(bytesleft <= 0) {
+ break;
+ }
+ }
+
+ readfrom = pluginsd_get_from_buffer(line, &bytesleft, readfrom, host->ssl.conn, tmpbuffer);
+ if(!readfrom) {
+ r = NULL;
+ }
+
+ normalread = 0;
+ }
+ }
+
+ if(normalread) {
+ r = fgets(line, PLUGINSD_LINE_MAX, fp);
+ }
+#else
+ r = fgets(line, PLUGINSD_LINE_MAX, fp);
+#endif
if(unlikely(!r)) {
if(feof(fp))
error("read failed: end of file");
@@ -526,6 +656,70 @@ static void pluginsd_worker_thread_cleanup(void *arg) {
}
}
+#define SERIAL_FAILURES_THRESHOLD 10
+static void pluginsd_worker_thread_handle_success(struct plugind *cd) {
+ if (likely(cd->successful_collections)) {
+ sleep((unsigned int) cd->update_every);
+ return;
+ }
+
+ if(likely(cd->serial_failures <= SERIAL_FAILURES_THRESHOLD)) {
+ info("'%s' (pid %d) does not generate useful output but it reports success (exits with 0). %s.",
+ cd->fullfilename, cd->pid,
+ cd->enabled ?
+ "Waiting a bit before starting it again." :
+ "Will not start it again - it is now disabled.");
+ sleep((unsigned int) (cd->update_every * 10));
+ return;
+ }
+
+ if (cd->serial_failures > SERIAL_FAILURES_THRESHOLD) {
+ error("'%s' (pid %d) does not generate useful output, although it reports success (exits with 0)."
+ "We have tried to collect something %zu times - unsuccessfully. Disabling it.",
+ cd->fullfilename, cd->pid, cd->serial_failures);
+ cd->enabled = 0;
+ return;
+ }
+
+ return;
+}
+
+static void pluginsd_worker_thread_handle_error(struct plugind *cd, int worker_ret_code) {
+ if (worker_ret_code == -1) {
+ info("'%s' (pid %d) was killed with SIGTERM. Disabling it.", cd->fullfilename, cd->pid);
+ cd->enabled = 0;
+ return;
+ }
+
+ if (!cd->successful_collections) {
+ error("'%s' (pid %d) exited with error code %d and haven't collected any data. Disabling it.",
+ cd->fullfilename, cd->pid, worker_ret_code);
+ cd->enabled = 0;
+ return;
+ }
+
+ if (cd->serial_failures <= SERIAL_FAILURES_THRESHOLD) {
+ error("'%s' (pid %d) exited with error code %d, but has given useful output in the past (%zu times). %s",
+ cd->fullfilename, cd->pid, worker_ret_code, cd->successful_collections,
+ cd->enabled ?
+ "Waiting a bit before starting it again." :
+ "Will not start it again - it is disabled.");
+ sleep((unsigned int) (cd->update_every * 10));
+ return;
+ }
+
+ if (cd->serial_failures > SERIAL_FAILURES_THRESHOLD) {
+ error("'%s' (pid %d) exited with error code %d, but has given useful output in the past (%zu times)."
+ "We tried to restart it %zu times, but it failed to generate data. Disabling it.",
+ cd->fullfilename, cd->pid, worker_ret_code, cd->successful_collections, cd->serial_failures);
+ cd->enabled = 0;
+ return;
+ }
+
+ return;
+}
+#undef SERIAL_FAILURES_THRESHOLD
+
void *pluginsd_worker_thread(void *arg) {
netdata_thread_cleanup_push(pluginsd_worker_thread_cleanup, arg);
@@ -546,50 +740,14 @@ void *pluginsd_worker_thread(void *arg) {
error("'%s' (pid %d) disconnected after %zu successful data collections (ENDs).", cd->fullfilename, cd->pid, count);
killpid(cd->pid, SIGTERM);
- // get the return code
- int code = mypclose(fp, cd->pid);
+ int worker_ret_code = mypclose(fp, cd->pid);
- if(code != 0) {
- // the plugin reports failure
+ if (likely(worker_ret_code == 0))
+ pluginsd_worker_thread_handle_success(cd);
+ else
+ pluginsd_worker_thread_handle_error(cd, worker_ret_code);
- if(likely(!cd->successful_collections)) {
- // nothing collected - disable it
- error("'%s' (pid %d) exited with error code %d. Disabling it.", cd->fullfilename, cd->pid, code);
- cd->enabled = 0;
- }
- else {
- // we have collected something
-
- if(likely(cd->serial_failures <= 10)) {
- error("'%s' (pid %d) exited with error code %d, but has given useful output in the past (%zu times). %s", cd->fullfilename, cd->pid, code, cd->successful_collections, cd->enabled?"Waiting a bit before starting it again.":"Will not start it again - it is disabled.");
- sleep((unsigned int) (cd->update_every * 10));
- }
- else {
- error("'%s' (pid %d) exited with error code %d, but has given useful output in the past (%zu times). We tried %zu times to restart it, but it failed to generate data. Disabling it.", cd->fullfilename, cd->pid, code, cd->successful_collections, cd->serial_failures);
- cd->enabled = 0;
- }
- }
- }
- else {
- // the plugin reports success
-
- if(unlikely(!cd->successful_collections)) {
- // we have collected nothing so far
-
- if(likely(cd->serial_failures <= 10)) {
- error("'%s' (pid %d) does not generate useful output but it reports success (exits with 0). %s.", cd->fullfilename, cd->pid, cd->enabled?"Waiting a bit before starting it again.":"Will not start it again - it is now disabled.");
- sleep((unsigned int) (cd->update_every * 10));
- }
- else {
- error("'%s' (pid %d) does not generate useful output, although it reports success (exits with 0), but we have tried %zu times to collect something. Disabling it.", cd->fullfilename, cd->pid, cd->serial_failures);
- cd->enabled = 0;
- }
- }
- else
- sleep((unsigned int) cd->update_every);
- }
cd->pid = 0;
-
if(unlikely(!cd->enabled)) break;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 18:59:20 +0000