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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_INCREMENTAL_PARSER_H
#define NETDATA_INCREMENTAL_PARSER_H 1
#include "daemon/common.h"
#define PARSER_MAX_CALLBACKS 20
#define PARSER_MAX_RECOVER_KEYWORDS 128
#define WORKER_PARSER_FIRST_JOB 3
// this has to be in-sync with the same at receiver.c
#define WORKER_RECEIVER_JOB_REPLICATION_COMPLETION (WORKER_PARSER_FIRST_JOB - 3)
// PARSER return codes
typedef enum parser_rc {
PARSER_RC_OK, // Callback was successful, go on
PARSER_RC_STOP, // Callback says STOP
PARSER_RC_ERROR // Callback failed (abort rest of callbacks)
} PARSER_RC;
typedef enum parser_input_type {
PARSER_INPUT_SPLIT = (1 << 1),
PARSER_INPUT_KEEP_ORIGINAL = (1 << 2),
PARSER_INPUT_PROCESSED = (1 << 3),
PARSER_NO_PARSE_INIT = (1 << 4),
PARSER_NO_ACTION_INIT = (1 << 5),
PARSER_DEFER_UNTIL_KEYWORD = (1 << 6),
} PARSER_INPUT_TYPE;
#define PARSER_INPUT_FULL (PARSER_INPUT_SPLIT|PARSER_INPUT_ORIGINAL)
typedef PARSER_RC (*keyword_function)(char **words, size_t num_words, void *user_data);
typedef struct parser_keyword {
size_t worker_job_id;
char *keyword;
uint32_t keyword_hash;
int func_no;
keyword_function func[PARSER_MAX_CALLBACKS+1];
struct parser_keyword *next;
} PARSER_KEYWORD;
typedef struct parser_data {
char *line;
struct parser_data *next;
} PARSER_DATA;
typedef struct parser {
size_t worker_job_next_id;
uint8_t version; // Parser version
RRDHOST *host;
int fd; // Socket
FILE *fp_input; // Input source e.g. stream
FILE *fp_output; // Stream to send commands to plugin
#ifdef ENABLE_HTTPS
struct netdata_ssl *ssl_output;
#endif
PARSER_DATA *data; // extra input
PARSER_KEYWORD *keyword; // List of parse keywords and functions
void *user; // User defined structure to hold extra state between calls
uint32_t flags;
size_t line;
char *(*read_function)(char *buffer, long unsigned int, void *input);
int (*eof_function)(void *input);
keyword_function unknown_function;
char buffer[PLUGINSD_LINE_MAX];
char *recover_location[PARSER_MAX_RECOVER_KEYWORDS+1];
char recover_input[PARSER_MAX_RECOVER_KEYWORDS];
#ifdef ENABLE_HTTPS
int bytesleft;
char tmpbuffer[PLUGINSD_LINE_MAX];
char *readfrom;
#endif
struct {
const char *end_keyword;
BUFFER *response;
void (*action)(struct parser *parser, void *action_data);
void *action_data;
} defer;
struct {
DICTIONARY *functions;
usec_t smaller_timeout;
} inflight;
} PARSER;
int find_first_keyword(const char *str, char *keyword, int max_size, int (*custom_isspace)(char));
PARSER *parser_init(RRDHOST *host, void *user, FILE *fp_input, FILE *fp_output, int fd, PARSER_INPUT_TYPE flags, void *ssl);
int parser_add_keyword(PARSER *working_parser, char *keyword, keyword_function func);
int parser_next(PARSER *working_parser);
int parser_action(PARSER *working_parser, char *input);
int parser_push(PARSER *working_parser, char *line);
void parser_destroy(PARSER *working_parser);
int parser_recover_input(PARSER *working_parser);
size_t pluginsd_process(RRDHOST *host, struct plugind *cd, FILE *fp_plugin_input, FILE *fp_plugin_output, int trust_durations);
PARSER_RC pluginsd_set(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_begin(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_end(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_chart(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_chart_definition_end(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_dimension(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_variable(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_flush(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_disable(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_label(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_overwrite(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_clabel_commit(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_clabel(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_replay_rrdset_begin(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_replay_rrddim_collection_state(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_replay_rrdset_collection_state(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_replay_set(char **words, size_t num_words, void *user);
PARSER_RC pluginsd_replay_end(char **words, size_t num_words, void *user);
#endif
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