1 files changed, 101 insertions, 0 deletions
diff --git a/libnetdata/functions_evloop/functions_evloop.h b/libnetdata/functions_evloop/functions_evloop.h
new file mode 100644
index 00000000..e5e83e95
--- /dev/null
+++ b/libnetdata/functions_evloop/functions_evloop.h
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_FUNCTIONS_EVLOOP_H
+#define NETDATA_FUNCTIONS_EVLOOP_H
+
+#include "../libnetdata.h"
+
+#define PLUGINSD_KEYWORD_CHART                  "CHART"
+#define PLUGINSD_KEYWORD_CHART_DEFINITION_END   "CHART_DEFINITION_END"
+#define PLUGINSD_KEYWORD_DIMENSION              "DIMENSION"
+#define PLUGINSD_KEYWORD_BEGIN                  "BEGIN"
+#define PLUGINSD_KEYWORD_SET                    "SET"
+#define PLUGINSD_KEYWORD_END                    "END"
+#define PLUGINSD_KEYWORD_FLUSH                  "FLUSH"
+#define PLUGINSD_KEYWORD_DISABLE                "DISABLE"
+#define PLUGINSD_KEYWORD_VARIABLE               "VARIABLE"
+#define PLUGINSD_KEYWORD_LABEL                  "LABEL"
+#define PLUGINSD_KEYWORD_OVERWRITE              "OVERWRITE"
+#define PLUGINSD_KEYWORD_CLABEL                 "CLABEL"
+#define PLUGINSD_KEYWORD_CLABEL_COMMIT          "CLABEL_COMMIT"
+#define PLUGINSD_KEYWORD_FUNCTION               "FUNCTION"
+#define PLUGINSD_KEYWORD_FUNCTION_CANCEL        "FUNCTION_CANCEL"
+#define PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN  "FUNCTION_RESULT_BEGIN"
+#define PLUGINSD_KEYWORD_FUNCTION_RESULT_END    "FUNCTION_RESULT_END"
+
+#define PLUGINSD_KEYWORD_REPLAY_CHART           "REPLAY_CHART"
+#define PLUGINSD_KEYWORD_REPLAY_BEGIN           "RBEGIN"
+#define PLUGINSD_KEYWORD_REPLAY_SET             "RSET"
+#define PLUGINSD_KEYWORD_REPLAY_RRDDIM_STATE    "RDSTATE"
+#define PLUGINSD_KEYWORD_REPLAY_RRDSET_STATE    "RSSTATE"
+#define PLUGINSD_KEYWORD_REPLAY_END             "REND"
+
+#define PLUGINSD_KEYWORD_BEGIN_V2               "BEGIN2"
+#define PLUGINSD_KEYWORD_SET_V2                 "SET2"
+#define PLUGINSD_KEYWORD_END_V2                 "END2"
+
+#define PLUGINSD_KEYWORD_HOST_DEFINE            "HOST_DEFINE"
+#define PLUGINSD_KEYWORD_HOST_DEFINE_END        "HOST_DEFINE_END"
+#define PLUGINSD_KEYWORD_HOST_LABEL             "HOST_LABEL"
+#define PLUGINSD_KEYWORD_HOST                   "HOST"
+
+#define PLUGINSD_KEYWORD_DYNCFG_ENABLE          "DYNCFG_ENABLE"
+#define PLUGINSD_KEYWORD_DYNCFG_REGISTER_MODULE "DYNCFG_REGISTER_MODULE"
+
+#define PLUGINSD_KEYWORD_REPORT_JOB_STATUS      "REPORT_JOB_STATUS"
+
+#define PLUGINSD_KEYWORD_EXIT                   "EXIT"
+
+#define PLUGINSD_KEYWORD_SLOT                   "SLOT" // to change the length of this, update pluginsd_extract_chart_slot() too
+
+#define PLUGINS_FUNCTIONS_TIMEOUT_DEFAULT 10 // seconds
+
+typedef void (*functions_evloop_worker_execute_t)(const char *transaction, char *function, int timeout, bool *cancelled);
+struct functions_evloop_worker_job;
+struct functions_evloop_globals *functions_evloop_init(size_t worker_threads, const char *tag, netdata_mutex_t *stdout_mutex, bool *plugin_should_exit);
+void functions_evloop_add_function(struct functions_evloop_globals *wg, const char *function, functions_evloop_worker_execute_t cb, time_t default_timeout);
+void functions_evloop_cancel_threads(struct functions_evloop_globals *wg);
+
+
+#define pluginsd_function_result_begin_to_buffer(wb, transaction, code, content_type, expires)      \
+    buffer_sprintf(wb                                                                               \
+                    , PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN " \"%s\" %d \"%s\" %ld\n"              \
+                    , (transaction) ? (transaction) : ""                                            \
+                    , (int)(code)                                                                   \
+                    , (content_type) ? (content_type) : ""                                          \
+                    , (long int)(expires)                                                           \
+    )
+
+#define pluginsd_function_result_end_to_buffer(wb) \
+    buffer_strcat(wb, "\n" PLUGINSD_KEYWORD_FUNCTION_RESULT_END "\n")
+
+#define pluginsd_function_result_begin_to_stdout(transaction, code, content_type, expires)          \
+    fprintf(stdout                                                                                  \
+                    , PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN " \"%s\" %d \"%s\" %ld\n"              \
+                    , (transaction) ? (transaction) : ""                                            \
+                    , (int)(code)                                                                   \
+                    , (content_type) ? (content_type) : ""                                          \
+                    , (long int)(expires)                                                           \
+    )
+
+#define pluginsd_function_result_end_to_stdout() \
+    fprintf(stdout, "\n" PLUGINSD_KEYWORD_FUNCTION_RESULT_END "\n")
+
+static inline void pluginsd_function_json_error_to_stdout(const char *transaction, int code, const char *msg) {
+    char buffer[PLUGINSD_LINE_MAX + 1];
+    json_escape_string(buffer, msg, PLUGINSD_LINE_MAX);
+
+    pluginsd_function_result_begin_to_stdout(transaction, code, "application/json", now_realtime_sec());
+    fprintf(stdout, "{\"status\":%d,\"error_message\":\"%s\"}", code, buffer);
+    pluginsd_function_result_end_to_stdout();
+    fflush(stdout);
+}
+
+static inline void pluginsd_function_result_to_stdout(const char *transaction, int code, const char *content_type, time_t expires, BUFFER *result) {
+    pluginsd_function_result_begin_to_stdout(transaction, code, content_type, expires);
+    fwrite(buffer_tostring(result), buffer_strlen(result), 1, stdout);
+    pluginsd_function_result_end_to_stdout();
+    fflush(stdout);
+}
+
+#endif //NETDATA_FUNCTIONS_EVLOOP_H