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-rw-r--r--libnetdata/eval/eval.c79
-rw-r--r--libnetdata/eval/eval.h13
2 files changed, 51 insertions, 41 deletions
diff --git a/libnetdata/eval/eval.c b/libnetdata/eval/eval.c
index e86cbd587..0e429a08c 100644
--- a/libnetdata/eval/eval.c
+++ b/libnetdata/eval/eval.c
@@ -62,24 +62,36 @@ static inline void print_parsed_as_constant(BUFFER *out, NETDATA_DOUBLE n);
// evaluation of expressions
static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *v, int *error) {
- static uint32_t this_hash = 0, now_hash = 0, after_hash = 0, before_hash = 0, status_hash = 0, removed_hash = 0, uninitialized_hash = 0, undefined_hash = 0, clear_hash = 0, warning_hash = 0, critical_hash = 0;
+ static STRING
+ *this_string = NULL,
+ *now_string = NULL,
+ *after_string = NULL,
+ *before_string = NULL,
+ *status_string = NULL,
+ *removed_string = NULL,
+ *uninitialized_string = NULL,
+ *undefined_string = NULL,
+ *clear_string = NULL,
+ *warning_string = NULL,
+ *critical_string = NULL;
+
NETDATA_DOUBLE n;
- if(unlikely(this_hash == 0)) {
- this_hash = simple_hash("this");
- now_hash = simple_hash("now");
- after_hash = simple_hash("after");
- before_hash = simple_hash("before");
- status_hash = simple_hash("status");
- removed_hash = simple_hash("REMOVED");
- uninitialized_hash = simple_hash("UNINITIALIZED");
- undefined_hash = simple_hash("UNDEFINED");
- clear_hash = simple_hash("CLEAR");
- warning_hash = simple_hash("WARNING");
- critical_hash = simple_hash("CRITICAL");
- }
-
- if(unlikely(v->hash == this_hash && !strcmp(v->name, "this"))) {
+ if(unlikely(this_string == NULL)) {
+ this_string = string_strdupz("this");
+ now_string = string_strdupz("now");
+ after_string = string_strdupz("after");
+ before_string = string_strdupz("before");
+ status_string = string_strdupz("status");
+ removed_string = string_strdupz("REMOVED");
+ uninitialized_string = string_strdupz("UNINITIALIZED");
+ undefined_string = string_strdupz("UNDEFINED");
+ clear_string = string_strdupz("CLEAR");
+ warning_string = string_strdupz("WARNING");
+ critical_string = string_strdupz("CRITICAL");
+ }
+
+ if(unlikely(v->name == this_string)) {
n = (exp->myself)?*exp->myself:NAN;
buffer_strcat(exp->error_msg, "[ $this = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -87,7 +99,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == after_hash && !strcmp(v->name, "after"))) {
+ if(unlikely(v->name == after_string)) {
n = (exp->after && *exp->after)?*exp->after:NAN;
buffer_strcat(exp->error_msg, "[ $after = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -95,7 +107,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == before_hash && !strcmp(v->name, "before"))) {
+ if(unlikely(v->name == before_string)) {
n = (exp->before && *exp->before)?*exp->before:NAN;
buffer_strcat(exp->error_msg, "[ $before = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -103,15 +115,15 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == now_hash && !strcmp(v->name, "now"))) {
- n = now_realtime_sec();
+ if(unlikely(v->name == now_string)) {
+ n = (NETDATA_DOUBLE)now_realtime_sec();
buffer_strcat(exp->error_msg, "[ $now = ");
print_parsed_as_constant(exp->error_msg, n);
buffer_strcat(exp->error_msg, " ] ");
return n;
}
- if(unlikely(v->hash == status_hash && !strcmp(v->name, "status"))) {
+ if(unlikely(v->name == status_string)) {
n = (exp->status)?*exp->status:RRDCALC_STATUS_UNINITIALIZED;
buffer_strcat(exp->error_msg, "[ $status = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -119,7 +131,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == removed_hash && !strcmp(v->name, "REMOVED"))) {
+ if(unlikely(v->name == removed_string)) {
n = RRDCALC_STATUS_REMOVED;
buffer_strcat(exp->error_msg, "[ $REMOVED = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -127,7 +139,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == uninitialized_hash && !strcmp(v->name, "UNINITIALIZED"))) {
+ if(unlikely(v->name == uninitialized_string)) {
n = RRDCALC_STATUS_UNINITIALIZED;
buffer_strcat(exp->error_msg, "[ $UNINITIALIZED = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -135,7 +147,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == undefined_hash && !strcmp(v->name, "UNDEFINED"))) {
+ if(unlikely(v->name == undefined_string)) {
n = RRDCALC_STATUS_UNDEFINED;
buffer_strcat(exp->error_msg, "[ $UNDEFINED = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -143,7 +155,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == clear_hash && !strcmp(v->name, "CLEAR"))) {
+ if(unlikely(v->name == clear_string)) {
n = RRDCALC_STATUS_CLEAR;
buffer_strcat(exp->error_msg, "[ $CLEAR = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -151,7 +163,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == warning_hash && !strcmp(v->name, "WARNING"))) {
+ if(unlikely(v->name == warning_string)) {
n = RRDCALC_STATUS_WARNING;
buffer_strcat(exp->error_msg, "[ $WARNING = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -159,7 +171,7 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(unlikely(v->hash == critical_hash && !strcmp(v->name, "CRITICAL"))) {
+ if(unlikely(v->name == critical_string)) {
n = RRDCALC_STATUS_CRITICAL;
buffer_strcat(exp->error_msg, "[ $CRITICAL = ");
print_parsed_as_constant(exp->error_msg, n);
@@ -167,15 +179,15 @@ static inline NETDATA_DOUBLE eval_variable(EVAL_EXPRESSION *exp, EVAL_VARIABLE *
return n;
}
- if(exp->rrdcalc && health_variable_lookup(v->name, v->hash, exp->rrdcalc, &n)) {
- buffer_sprintf(exp->error_msg, "[ ${%s} = ", v->name);
+ if(exp->rrdcalc && health_variable_lookup(v->name, exp->rrdcalc, &n)) {
+ buffer_sprintf(exp->error_msg, "[ ${%s} = ", string2str(v->name));
print_parsed_as_constant(exp->error_msg, n);
buffer_strcat(exp->error_msg, " ] ");
return n;
}
*error = EVAL_ERROR_UNKNOWN_VARIABLE;
- buffer_sprintf(exp->error_msg, "[ undefined variable '%s' ] ", v->name);
+ buffer_sprintf(exp->error_msg, "[ undefined variable '%s' ] ", string2str(v->name));
return NAN;
}
@@ -357,7 +369,7 @@ static inline NETDATA_DOUBLE eval_node(EVAL_EXPRESSION *exp, EVAL_NODE *op, int
static inline void print_parsed_as_variable(BUFFER *out, EVAL_VARIABLE *v, int *error) {
(void)error;
- buffer_sprintf(out, "${%s}", v->name);
+ buffer_sprintf(out, "${%s}", string2str(v->name));
}
static inline void print_parsed_as_constant(BUFFER *out, NETDATA_DOUBLE n) {
@@ -859,12 +871,11 @@ static inline void eval_node_set_value_to_variable(EVAL_NODE *op, int pos, const
op->ops[pos].type = EVAL_VALUE_VARIABLE;
op->ops[pos].variable = callocz(1, sizeof(EVAL_VARIABLE));
- op->ops[pos].variable->name = strdupz(variable);
- op->ops[pos].variable->hash = simple_hash(op->ops[pos].variable->name);
+ op->ops[pos].variable->name = string_strdupz(variable);
}
static inline void eval_variable_free(EVAL_VARIABLE *v) {
- freez(v->name);
+ string_freez(v->name);
freez(v);
}
diff --git a/libnetdata/eval/eval.h b/libnetdata/eval/eval.h
index 086d171aa..1633ec505 100644
--- a/libnetdata/eval/eval.h
+++ b/libnetdata/eval/eval.h
@@ -18,8 +18,7 @@ typedef enum rrdcalc_status {
} RRDCALC_STATUS;
typedef struct eval_variable {
- char *name;
- uint32_t hash;
+ STRING *name;
struct eval_variable *next;
} EVAL_VARIABLE;
@@ -70,19 +69,19 @@ typedef struct eval_expression {
// parse the given string as an expression and return:
// a pointer to an expression if it parsed OK
// NULL in which case the pointer to error has the error code
-extern EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, int *error);
+EVAL_EXPRESSION *expression_parse(const char *string, const char **failed_at, int *error);
// free all resources allocated for an expression
-extern void expression_free(EVAL_EXPRESSION *expression);
+void expression_free(EVAL_EXPRESSION *expression);
// convert an error code to a message
-extern const char *expression_strerror(int error);
+const char *expression_strerror(int error);
// evaluate an expression and return
// 1 = OK, the result is in: expression->result
// 2 = FAILED, the error message is in: buffer_tostring(expression->error_msg)
-extern int expression_evaluate(EVAL_EXPRESSION *expression);
+int expression_evaluate(EVAL_EXPRESSION *expression);
-extern int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, NETDATA_DOUBLE *result);
+int health_variable_lookup(STRING *variable, struct rrdcalc *rc, NETDATA_DOUBLE *result);
#endif //NETDATA_EVAL_H
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 21:57:07 +0000