New upstream version 1.6.0+dfsg

1 files changed, 877 insertions, 0 deletions

diff --git a/src/health_config.c b/src/health_config.c
new file mode 100644
index 00000000..ad954cbe
--- /dev/null
+++ b/src/health_config.c
@@ -0,0 +1,877 @@
+#define NETDATA_HEALTH_INTERNALS
+#include "common.h"
+
+#define HEALTH_CONF_MAX_LINE 4096
+
+#define HEALTH_ALARM_KEY "alarm"
+#define HEALTH_TEMPLATE_KEY "template"
+#define HEALTH_ON_KEY "on"
+#define HEALTH_FAMILIES_KEY "families"
+#define HEALTH_LOOKUP_KEY "lookup"
+#define HEALTH_CALC_KEY "calc"
+#define HEALTH_EVERY_KEY "every"
+#define HEALTH_GREEN_KEY "green"
+#define HEALTH_RED_KEY "red"
+#define HEALTH_WARN_KEY "warn"
+#define HEALTH_CRIT_KEY "crit"
+#define HEALTH_EXEC_KEY "exec"
+#define HEALTH_RECIPIENT_KEY "to"
+#define HEALTH_UNITS_KEY "units"
+#define HEALTH_INFO_KEY "info"
+#define HEALTH_DELAY_KEY "delay"
+#define HEALTH_OPTIONS_KEY "options"
+
+static inline int rrdcalc_add_alarm_from_config(RRDHOST *host, RRDCALC *rc) {
+    if(!rc->chart) {
+        error("Health configuration for alarm '%s' does not have a chart", rc->name);
+        return 0;
+    }
+
+    if(!rc->update_every) {
+        error("Health configuration for alarm '%s.%s' has no frequency (parameter 'every'). Ignoring it.", rc->chart?rc->chart:"NOCHART", rc->name);
+        return 0;
+    }
+
+    if(!RRDCALC_HAS_DB_LOOKUP(rc) && !rc->warning && !rc->critical) {
+        error("Health configuration for alarm '%s.%s' is useless (no calculation, no warning and no critical evaluation)", rc->chart?rc->chart:"NOCHART", rc->name);
+        return 0;
+    }
+
+    if (rrdcalc_exists(host, rc->chart, rc->name, rc->hash_chart, rc->hash))
+        return 0;
+
+    rc->id = rrdcalc_get_unique_id(host, rc->chart, rc->name, &rc->next_event_id);
+
+    debug(D_HEALTH, "Health configuration adding alarm '%s.%s' (%u): exec '%s', recipient '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s', delay up %d, delay down %d, delay max %d, delay_multiplier %f",
+            rc->chart?rc->chart:"NOCHART",
+            rc->name,
+            rc->id,
+            (rc->exec)?rc->exec:"DEFAULT",
+            (rc->recipient)?rc->recipient:"DEFAULT",
+            rc->green,
+            rc->red,
+            rc->group,
+            rc->after,
+            rc->before,
+            rc->options,
+            (rc->dimensions)?rc->dimensions:"NONE",
+            rc->update_every,
+            (rc->calculation)?rc->calculation->parsed_as:"NONE",
+            (rc->warning)?rc->warning->parsed_as:"NONE",
+            (rc->critical)?rc->critical->parsed_as:"NONE",
+            rc->source,
+            rc->delay_up_duration,
+            rc->delay_down_duration,
+            rc->delay_max_duration,
+            rc->delay_multiplier
+    );
+
+    rrdcalc_create_part2(host, rc);
+    return 1;
+}
+
+static inline int rrdcalctemplate_add_template_from_config(RRDHOST *host, RRDCALCTEMPLATE *rt) {
+    if(unlikely(!rt->context)) {
+        error("Health configuration for template '%s' does not have a context", rt->name);
+        return 0;
+    }
+
+    if(unlikely(!rt->update_every)) {
+        error("Health configuration for template '%s' has no frequency (parameter 'every'). Ignoring it.", rt->name);
+        return 0;
+    }
+
+    if(unlikely(!RRDCALCTEMPLATE_HAS_CALCULATION(rt) && !rt->warning && !rt->critical)) {
+        error("Health configuration for template '%s' is useless (no calculation, no warning and no critical evaluation)", rt->name);
+        return 0;
+    }
+
+    RRDCALCTEMPLATE *t, *last = NULL;
+    for (t = host->templates; t ; last = t, t = t->next) {
+        if(unlikely(t->hash_name == rt->hash_name && !strcmp(t->name, rt->name))) {
+            error("Health configuration template '%s' already exists for host '%s'.", rt->name, host->hostname);
+            return 0;
+        }
+    }
+
+    debug(D_HEALTH, "Health configuration adding template '%s': context '%s', exec '%s', recipient '%s', green %Lf, red %Lf, lookup: group %d, after %d, before %d, options %u, dimensions '%s', update every %d, calculation '%s', warning '%s', critical '%s', source '%s', delay up %d, delay down %d, delay max %d, delay_multiplier %f",
+            rt->name,
+            (rt->context)?rt->context:"NONE",
+            (rt->exec)?rt->exec:"DEFAULT",
+            (rt->recipient)?rt->recipient:"DEFAULT",
+            rt->green,
+            rt->red,
+            rt->group,
+            rt->after,
+            rt->before,
+            rt->options,
+            (rt->dimensions)?rt->dimensions:"NONE",
+            rt->update_every,
+            (rt->calculation)?rt->calculation->parsed_as:"NONE",
+            (rt->warning)?rt->warning->parsed_as:"NONE",
+            (rt->critical)?rt->critical->parsed_as:"NONE",
+            rt->source,
+            rt->delay_up_duration,
+            rt->delay_down_duration,
+            rt->delay_max_duration,
+            rt->delay_multiplier
+    );
+
+    if(likely(last)) {
+        last->next = rt;
+    }
+    else {
+        rt->next = host->templates;
+        host->templates = rt;
+    }
+
+    return 1;
+}
+
+static inline int health_parse_duration(char *string, int *result) {
+    // make sure it is a number
+    if(!*string || !(isdigit(*string) || *string == '+' || *string == '-')) {
+        *result = 0;
+        return 0;
+    }
+
+    char *e = NULL;
+    calculated_number n = strtold(string, &e);
+    if(e && *e) {
+        switch (*e) {
+            case 'Y':
+                *result = (int) (n * 86400 * 365);
+                break;
+            case 'M':
+                *result = (int) (n * 86400 * 30);
+                break;
+            case 'w':
+                *result = (int) (n * 86400 * 7);
+                break;
+            case 'd':
+                *result = (int) (n * 86400);
+                break;
+            case 'h':
+                *result = (int) (n * 3600);
+                break;
+            case 'm':
+                *result = (int) (n * 60);
+                break;
+
+            default:
+            case 's':
+                *result = (int) (n);
+                break;
+        }
+    }
+    else
+        *result = (int)(n);
+
+    return 1;
+}
+
+static inline int health_parse_delay(
+        size_t line, const char *path, const char *file, char *string,
+        int *delay_up_duration,
+        int *delay_down_duration,
+        int *delay_max_duration,
+        float *delay_multiplier) {
+
+    char given_up = 0;
+    char given_down = 0;
+    char given_max = 0;
+    char given_multiplier = 0;
+
+    char *s = string;
+    while(*s) {
+        char *key = s;
+
+        while(*s && !isspace(*s)) s++;
+        while(*s && isspace(*s)) *s++ = '\0';
+
+        if(!*key) break;
+
+        char *value = s;
+        while(*s && !isspace(*s)) s++;
+        while(*s && isspace(*s)) *s++ = '\0';
+
+        if(!strcasecmp(key, "up")) {
+            if (!health_parse_duration(value, delay_up_duration)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+            else given_up = 1;
+        }
+        else if(!strcasecmp(key, "down")) {
+            if (!health_parse_duration(value, delay_down_duration)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+            else given_down = 1;
+        }
+        else if(!strcasecmp(key, "multiplier")) {
+            *delay_multiplier = strtof(value, NULL);
+            if(isnan(*delay_multiplier) || isinf(*delay_multiplier) || islessequal(*delay_multiplier, 0)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+            else given_multiplier = 1;
+        }
+        else if(!strcasecmp(key, "max")) {
+            if (!health_parse_duration(value, delay_max_duration)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid value '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+            else given_max = 1;
+        }
+        else {
+            error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
+                    line, path, file, key);
+        }
+    }
+
+    if(!given_up)
+        *delay_up_duration = 0;
+
+    if(!given_down)
+        *delay_down_duration = 0;
+
+    if(!given_multiplier)
+        *delay_multiplier = 1.0;
+
+    if(!given_max) {
+        if((*delay_max_duration) < (*delay_up_duration) * (*delay_multiplier))
+            *delay_max_duration = (*delay_up_duration) * (*delay_multiplier);
+
+        if((*delay_max_duration) < (*delay_down_duration) * (*delay_multiplier))
+            *delay_max_duration = (*delay_down_duration) * (*delay_multiplier);
+    }
+
+    return 1;
+}
+
+static inline uint32_t health_parse_options(const char *s) {
+    uint32_t options = 0;
+    char buf[100+1] = "";
+
+    while(*s) {
+        buf[0] = '\0';
+
+        // skip spaces
+        while(*s && isspace(*s))
+            s++;
+
+        // find the next space
+        size_t count = 0;
+        while(*s && count < 100 && !isspace(*s))
+            buf[count++] = *s++;
+
+        if(buf[0]) {
+            buf[count] = '\0';
+
+            if(!strcasecmp(buf, "no-clear-notification") || !strcasecmp(buf, "no-clear"))
+                options |= RRDCALC_FLAG_NO_CLEAR_NOTIFICATION;
+            else
+                error("Ignoring unknown alarm option '%s'", buf);
+        }
+    }
+
+    return options;
+}
+
+static inline int health_parse_db_lookup(
+        size_t line, const char *path, const char *file, char *string,
+        int *group_method, int *after, int *before, int *every,
+        uint32_t *options, char **dimensions
+) {
+    debug(D_HEALTH, "Health configuration parsing database lookup %zu@%s/%s: %s", line, path, file, string);
+
+    if(*dimensions) freez(*dimensions);
+    *dimensions = NULL;
+    *after = 0;
+    *before = 0;
+    *every = 0;
+    *options = 0;
+
+    char *s = string, *key;
+
+    // first is the group method
+    key = s;
+    while(*s && !isspace(*s)) s++;
+    while(*s && isspace(*s)) *s++ = '\0';
+    if(!*s) {
+        error("Health configuration invalid chart calculation at line %zu of file '%s/%s': expected group method followed by the 'after' time, but got '%s'",
+                line, path, file, key);
+        return 0;
+    }
+
+    if((*group_method = web_client_api_request_v1_data_group(key, -1)) == -1) {
+        error("Health configuration at line %zu of file '%s/%s': invalid group method '%s'",
+                line, path, file, key);
+        return 0;
+    }
+
+    // then is the 'after' time
+    key = s;
+    while(*s && !isspace(*s)) s++;
+    while(*s && isspace(*s)) *s++ = '\0';
+
+    if(!health_parse_duration(key, after)) {
+        error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' after group method",
+                line, path, file, key);
+        return 0;
+    }
+
+    // sane defaults
+    *every = abs(*after);
+
+    // now we may have optional parameters
+    while(*s) {
+        key = s;
+        while(*s && !isspace(*s)) s++;
+        while(*s && isspace(*s)) *s++ = '\0';
+        if(!*key) break;
+
+        if(!strcasecmp(key, "at")) {
+            char *value = s;
+            while(*s && !isspace(*s)) s++;
+            while(*s && isspace(*s)) *s++ = '\0';
+
+            if (!health_parse_duration(value, before)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+        }
+        else if(!strcasecmp(key, HEALTH_EVERY_KEY)) {
+            char *value = s;
+            while(*s && !isspace(*s)) s++;
+            while(*s && isspace(*s)) *s++ = '\0';
+
+            if (!health_parse_duration(value, every)) {
+                error("Health configuration at line %zu of file '%s/%s': invalid duration '%s' for '%s' keyword",
+                        line, path, file, value, key);
+            }
+        }
+        else if(!strcasecmp(key, "absolute") || !strcasecmp(key, "abs") || !strcasecmp(key, "absolute_sum")) {
+            *options |= RRDR_OPTION_ABSOLUTE;
+        }
+        else if(!strcasecmp(key, "min2max")) {
+            *options |= RRDR_OPTION_MIN2MAX;
+        }
+        else if(!strcasecmp(key, "null2zero")) {
+            *options |= RRDR_OPTION_NULL2ZERO;
+        }
+        else if(!strcasecmp(key, "percentage")) {
+            *options |= RRDR_OPTION_PERCENTAGE;
+        }
+        else if(!strcasecmp(key, "unaligned")) {
+            *options |= RRDR_OPTION_NOT_ALIGNED;
+        }
+        else if(!strcasecmp(key, "of")) {
+            if(*s && strcasecmp(s, "all"))
+                *dimensions = strdupz(s);
+            break;
+        }
+        else {
+            error("Health configuration at line %zu of file '%s/%s': unknown keyword '%s'",
+                    line, path, file, key);
+        }
+    }
+
+    return 1;
+}
+
+static inline char *trim_all_spaces(char *buffer) {
+    char *d = buffer, *s = buffer;
+
+    // skip spaces
+    while(isspace(*s)) s++;
+
+    while(*s) {
+        // copy the non-space part
+        while(*s && !isspace(*s)) *d++ = *s++;
+
+        // add a space if we have to
+        if(*s && isspace(*s)) {
+            *d++ = ' ';
+            s++;
+        }
+
+        // skip spaces
+        while(isspace(*s)) s++;
+    }
+
+    *d = '\0';
+
+    if(d > buffer) {
+        d--;
+        if(isspace(*d)) *d = '\0';
+    }
+
+    if(!buffer[0]) return NULL;
+    return buffer;
+}
+
+static inline char *health_source_file(size_t line, const char *path, const char *filename) {
+    char buffer[FILENAME_MAX + 1];
+    snprintfz(buffer, FILENAME_MAX, "%zu@%s/%s", line, path, filename);
+    return strdupz(buffer);
+}
+
+static inline void strip_quotes(char *s) {
+    while(*s) {
+        if(*s == '\'' || *s == '"') *s = ' ';
+        s++;
+    }
+}
+
+int health_readfile(RRDHOST *host, const char *path, const char *filename) {
+    debug(D_HEALTH, "Health configuration reading file '%s/%s'", path, filename);
+
+    static uint32_t
+            hash_alarm = 0,
+            hash_template = 0,
+            hash_on = 0,
+            hash_families = 0,
+            hash_calc = 0,
+            hash_green = 0,
+            hash_red = 0,
+            hash_warn = 0,
+            hash_crit = 0,
+            hash_exec = 0,
+            hash_every = 0,
+            hash_lookup = 0,
+            hash_units = 0,
+            hash_info = 0,
+            hash_recipient = 0,
+            hash_delay = 0,
+            hash_options = 0;
+
+    char buffer[HEALTH_CONF_MAX_LINE + 1];
+
+    if(unlikely(!hash_alarm)) {
+        hash_alarm = simple_uhash(HEALTH_ALARM_KEY);
+        hash_template = simple_uhash(HEALTH_TEMPLATE_KEY);
+        hash_on = simple_uhash(HEALTH_ON_KEY);
+        hash_families = simple_uhash(HEALTH_FAMILIES_KEY);
+        hash_calc = simple_uhash(HEALTH_CALC_KEY);
+        hash_lookup = simple_uhash(HEALTH_LOOKUP_KEY);
+        hash_green = simple_uhash(HEALTH_GREEN_KEY);
+        hash_red = simple_uhash(HEALTH_RED_KEY);
+        hash_warn = simple_uhash(HEALTH_WARN_KEY);
+        hash_crit = simple_uhash(HEALTH_CRIT_KEY);
+        hash_exec = simple_uhash(HEALTH_EXEC_KEY);
+        hash_every = simple_uhash(HEALTH_EVERY_KEY);
+        hash_units = simple_hash(HEALTH_UNITS_KEY);
+        hash_info = simple_hash(HEALTH_INFO_KEY);
+        hash_recipient = simple_hash(HEALTH_RECIPIENT_KEY);
+        hash_delay = simple_uhash(HEALTH_DELAY_KEY);
+        hash_options = simple_uhash(HEALTH_OPTIONS_KEY);
+    }
+
+    snprintfz(buffer, HEALTH_CONF_MAX_LINE, "%s/%s", path, filename);
+    FILE *fp = fopen(buffer, "r");
+    if(!fp) {
+        error("Health configuration cannot read file '%s'.", buffer);
+        return 0;
+    }
+
+    RRDCALC *rc = NULL;
+    RRDCALCTEMPLATE *rt = NULL;
+
+    size_t line = 0, append = 0;
+    char *s;
+    while((s = fgets(&buffer[append], (int)(HEALTH_CONF_MAX_LINE - append), fp)) || append) {
+        int stop_appending = !s;
+        line++;
+        s = trim(buffer);
+        if(!s) continue;
+
+        append = strlen(s);
+        if(!stop_appending && s[append - 1] == '\\') {
+            s[append - 1] = ' ';
+            append = &s[append] - buffer;
+            if(append < HEALTH_CONF_MAX_LINE)
+                continue;
+            else {
+                error("Health configuration has too long muli-line at line %zu of file '%s/%s'.", line, path, filename);
+            }
+        }
+        append = 0;
+
+        char *key = s;
+        while(*s && *s != ':') s++;
+        if(!*s) {
+            error("Health configuration has invalid line %zu of file '%s/%s'. It does not contain a ':'. Ignoring it.", line, path, filename);
+            continue;
+        }
+        *s = '\0';
+        s++;
+
+        char *value = s;
+        key = trim_all_spaces(key);
+        value = trim_all_spaces(value);
+
+        if(!key) {
+            error("Health configuration has invalid line %zu of file '%s/%s'. Keyword is empty. Ignoring it.", line, path, filename);
+            continue;
+        }
+
+        if(!value) {
+            error("Health configuration has invalid line %zu of file '%s/%s'. value is empty. Ignoring it.", line, path, filename);
+            continue;
+        }
+
+        uint32_t hash = simple_uhash(key);
+
+        if(hash == hash_alarm && !strcasecmp(key, HEALTH_ALARM_KEY)) {
+            if(rc && !rrdcalc_add_alarm_from_config(host, rc))
+                rrdcalc_free(host, rc);
+
+            if(rt) {
+                if (!rrdcalctemplate_add_template_from_config(host, rt))
+                    rrdcalctemplate_free(host, rt);
+                rt = NULL;
+            }
+
+            rc = callocz(1, sizeof(RRDCALC));
+            rc->next_event_id = 1;
+            rc->name = strdupz(value);
+            rc->hash = simple_hash(rc->name);
+            rc->source = health_source_file(line, path, filename);
+            rc->green = NAN;
+            rc->red = NAN;
+            rc->value = NAN;
+            rc->old_value = NAN;
+            rc->delay_multiplier = 1.0;
+
+            if(rrdvar_fix_name(rc->name))
+                error("Health configuration renamed alarm '%s' to '%s'", value, rc->name);
+        }
+        else if(hash == hash_template && !strcasecmp(key, HEALTH_TEMPLATE_KEY)) {
+            if(rc) {
+                if(!rrdcalc_add_alarm_from_config(host, rc))
+                    rrdcalc_free(host, rc);
+                rc = NULL;
+            }
+
+            if(rt && !rrdcalctemplate_add_template_from_config(host, rt))
+                rrdcalctemplate_free(host, rt);
+
+            rt = callocz(1, sizeof(RRDCALCTEMPLATE));
+            rt->name = strdupz(value);
+            rt->hash_name = simple_hash(rt->name);
+            rt->source = health_source_file(line, path, filename);
+            rt->green = NAN;
+            rt->red = NAN;
+            rt->delay_multiplier = 1.0;
+
+            if(rrdvar_fix_name(rt->name))
+                error("Health configuration renamed template '%s' to '%s'", value, rt->name);
+        }
+        else if(rc) {
+            if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
+                if(rc->chart) {
+                    if(strcmp(rc->chart, value))
+                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rc->name, key, rc->chart, value, value);
+
+                    freez(rc->chart);
+                }
+                rc->chart = strdupz(value);
+                rc->hash_chart = simple_hash(rc->chart);
+            }
+            else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
+                health_parse_db_lookup(line, path, filename, value, &rc->group, &rc->after, &rc->before,
+                        &rc->update_every,
+                        &rc->options, &rc->dimensions);
+            }
+            else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
+                if(!health_parse_duration(value, &rc->update_every))
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' cannot parse duration: '%s'.",
+                            line, path, filename, rc->name, key, value);
+            }
+            else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
+                char *e;
+                rc->green = strtold(value, &e);
+                if(e && *e) {
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, path, filename, rc->name, key, e);
+                }
+            }
+            else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
+                char *e;
+                rc->red = strtold(value, &e);
+                if(e && *e) {
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, path, filename, rc->name, key, e);
+                }
+            }
+            else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rc->calculation = expression_parse(value, &failed_at, &error);
+                if(!rc->calculation) {
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rc->warning = expression_parse(value, &failed_at, &error);
+                if(!rc->warning) {
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rc->critical = expression_parse(value, &failed_at, &error);
+                if(!rc->critical) {
+                    error("Health configuration at line %zu of file '%s/%s' for alarm '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rc->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
+                if(rc->exec) {
+                    if(strcmp(rc->exec, value))
+                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rc->name, key, rc->exec, value, value);
+
+                    freez(rc->exec);
+                }
+                rc->exec = strdupz(value);
+            }
+            else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
+                if(rc->recipient) {
+                    if(strcmp(rc->recipient, value))
+                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rc->name, key, rc->recipient, value, value);
+
+                    freez(rc->recipient);
+                }
+                rc->recipient = strdupz(value);
+            }
+            else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
+                if(rc->units) {
+                    if(strcmp(rc->units, value))
+                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rc->name, key, rc->units, value, value);
+
+                    freez(rc->units);
+                }
+                rc->units = strdupz(value);
+                strip_quotes(rc->units);
+            }
+            else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
+                if(rc->info) {
+                    if(strcmp(rc->info, value))
+                        error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rc->name, key, rc->info, value, value);
+
+                    freez(rc->info);
+                }
+                rc->info = strdupz(value);
+                strip_quotes(rc->info);
+            }
+            else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
+                health_parse_delay(line, path, filename, value, &rc->delay_up_duration, &rc->delay_down_duration, &rc->delay_max_duration, &rc->delay_multiplier);
+            }
+            else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
+                rc->options |= health_parse_options(value);
+            }
+            else {
+                error("Health configuration at line %zu of file '%s/%s' for alarm '%s' has unknown key '%s'.",
+                        line, path, filename, rc->name, key);
+            }
+        }
+        else if(rt) {
+            if(hash == hash_on && !strcasecmp(key, HEALTH_ON_KEY)) {
+                if(rt->context) {
+                    if(strcmp(rt->context, value))
+                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rt->name, key, rt->context, value, value);
+
+                    freez(rt->context);
+                }
+                rt->context = strdupz(value);
+                rt->hash_context = simple_hash(rt->context);
+            }
+            else if(hash == hash_families && !strcasecmp(key, HEALTH_FAMILIES_KEY)) {
+                freez(rt->family_match);
+                simple_pattern_free(rt->family_pattern);
+
+                rt->family_match = strdupz(value);
+                rt->family_pattern = simple_pattern_create(rt->family_match, SIMPLE_PATTERN_EXACT);
+            }
+            else if(hash == hash_lookup && !strcasecmp(key, HEALTH_LOOKUP_KEY)) {
+                health_parse_db_lookup(line, path, filename, value, &rt->group, &rt->after, &rt->before,
+                        &rt->update_every, &rt->options, &rt->dimensions);
+            }
+            else if(hash == hash_every && !strcasecmp(key, HEALTH_EVERY_KEY)) {
+                if(!health_parse_duration(value, &rt->update_every))
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' cannot parse duration: '%s'.",
+                            line, path, filename, rt->name, key, value);
+            }
+            else if(hash == hash_green && !strcasecmp(key, HEALTH_GREEN_KEY)) {
+                char *e;
+                rt->green = strtold(value, &e);
+                if(e && *e) {
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, path, filename, rt->name, key, e);
+                }
+            }
+            else if(hash == hash_red && !strcasecmp(key, HEALTH_RED_KEY)) {
+                char *e;
+                rt->red = strtold(value, &e);
+                if(e && *e) {
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' leaves this string unmatched: '%s'.",
+                            line, path, filename, rt->name, key, e);
+                }
+            }
+            else if(hash == hash_calc && !strcasecmp(key, HEALTH_CALC_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rt->calculation = expression_parse(value, &failed_at, &error);
+                if(!rt->calculation) {
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_warn && !strcasecmp(key, HEALTH_WARN_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rt->warning = expression_parse(value, &failed_at, &error);
+                if(!rt->warning) {
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_crit && !strcasecmp(key, HEALTH_CRIT_KEY)) {
+                const char *failed_at = NULL;
+                int error = 0;
+                rt->critical = expression_parse(value, &failed_at, &error);
+                if(!rt->critical) {
+                    error("Health configuration at line %zu of file '%s/%s' for template '%s' at key '%s' has unparse-able expression '%s': %s at '%s'",
+                            line, path, filename, rt->name, key, value, expression_strerror(error), failed_at);
+                }
+            }
+            else if(hash == hash_exec && !strcasecmp(key, HEALTH_EXEC_KEY)) {
+                if(rt->exec) {
+                    if(strcmp(rt->exec, value))
+                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rt->name, key, rt->exec, value, value);
+
+                    freez(rt->exec);
+                }
+                rt->exec = strdupz(value);
+            }
+            else if(hash == hash_recipient && !strcasecmp(key, HEALTH_RECIPIENT_KEY)) {
+                if(rt->recipient) {
+                    if(strcmp(rt->recipient, value))
+                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rt->name, key, rt->recipient, value, value);
+
+                    freez(rt->recipient);
+                }
+                rt->recipient = strdupz(value);
+            }
+            else if(hash == hash_units && !strcasecmp(key, HEALTH_UNITS_KEY)) {
+                if(rt->units) {
+                    if(strcmp(rt->units, value))
+                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rt->name, key, rt->units, value, value);
+
+                    freez(rt->units);
+                }
+                rt->units = strdupz(value);
+                strip_quotes(rt->units);
+            }
+            else if(hash == hash_info && !strcasecmp(key, HEALTH_INFO_KEY)) {
+                if(rt->info) {
+                    if(strcmp(rt->info, value))
+                        error("Health configuration at line %zu of file '%s/%s' for template '%s' has key '%s' twice, once with value '%s' and later with value '%s'. Using ('%s').",
+                                line, path, filename, rt->name, key, rt->info, value, value);
+
+                    freez(rt->info);
+                }
+                rt->info = strdupz(value);
+                strip_quotes(rt->info);
+            }
+            else if(hash == hash_delay && !strcasecmp(key, HEALTH_DELAY_KEY)) {
+                health_parse_delay(line, path, filename, value, &rt->delay_up_duration, &rt->delay_down_duration, &rt->delay_max_duration, &rt->delay_multiplier);
+            }
+            else if(hash == hash_options && !strcasecmp(key, HEALTH_OPTIONS_KEY)) {
+                rt->options |= health_parse_options(value);
+            }
+            else {
+                error("Health configuration at line %zu of file '%s/%s' for template '%s' has unknown key '%s'.",
+                        line, path, filename, rt->name, key);
+            }
+        }
+        else {
+            error("Health configuration at line %zu of file '%s/%s' has unknown key '%s'. Expected either '" HEALTH_ALARM_KEY "' or '" HEALTH_TEMPLATE_KEY "'.",
+                    line, path, filename, key);
+        }
+    }
+
+    if(rc && !rrdcalc_add_alarm_from_config(host, rc))
+        rrdcalc_free(host, rc);
+
+    if(rt && !rrdcalctemplate_add_template_from_config(host, rt))
+        rrdcalctemplate_free(host, rt);
+
+    fclose(fp);
+    return 1;
+}
+
+void health_readdir(RRDHOST *host, const char *path) {
+    if(!host->health_enabled) return;
+
+    size_t pathlen = strlen(path);
+
+    debug(D_HEALTH, "Health configuration reading directory '%s'", path);
+
+    DIR *dir = opendir(path);
+    if (!dir) {
+        error("Health configuration cannot open directory '%s'.", path);
+        return;
+    }
+
+    struct dirent *de = NULL;
+    while ((de = readdir(dir))) {
+        size_t len = strlen(de->d_name);
+
+        if(de->d_type == DT_DIR
+           && (
+                   (de->d_name[0] == '.' && de->d_name[1] == '\0')
+                   || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
+           )) {
+            debug(D_HEALTH, "Ignoring directory '%s'", de->d_name);
+            continue;
+        }
+
+        else if(de->d_type == DT_DIR) {
+            char *s = mallocz(pathlen + strlen(de->d_name) + 2);
+            strcpy(s, path);
+            strcat(s, "/");
+            strcat(s, de->d_name);
+            health_readdir(host, s);
+            freez(s);
+            continue;
+        }
+
+        else if((de->d_type == DT_LNK || de->d_type == DT_REG || de->d_type == DT_UNKNOWN) &&
+                len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) {
+            health_readfile(host, path, de->d_name);
+        }
+
+        else debug(D_HEALTH, "Ignoring file '%s'", de->d_name);
+    }
+
+    closedir(dir);
+}
+
+