diff options
Diffstat (limited to 'web/api/badges/web_buffer_svg.c')
| -rw-r--r-- | web/api/badges/web_buffer_svg.c | 1140 |
1 files changed, 1140 insertions, 0 deletions
diff --git a/web/api/badges/web_buffer_svg.c b/web/api/badges/web_buffer_svg.c new file mode 100644 index 0000000..b5a1e03 --- /dev/null +++ b/web/api/badges/web_buffer_svg.c @@ -0,0 +1,1140 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "web_buffer_svg.h" + +#define BADGE_HORIZONTAL_PADDING 4 +#define VERDANA_KERNING 0.2 +#define VERDANA_PADDING 1.0 + +/* + * verdana11_widths[] has been generated with this method: + * https://github.com/badges/shields/blob/master/measure-text.js +*/ + +static double verdana11_widths[128] = { + [0] = 0.0, + [1] = 0.0, + [2] = 0.0, + [3] = 0.0, + [4] = 0.0, + [5] = 0.0, + [6] = 0.0, + [7] = 0.0, + [8] = 0.0, + [9] = 0.0, + [10] = 0.0, + [11] = 0.0, + [12] = 0.0, + [13] = 0.0, + [14] = 0.0, + [15] = 0.0, + [16] = 0.0, + [17] = 0.0, + [18] = 0.0, + [19] = 0.0, + [20] = 0.0, + [21] = 0.0, + [22] = 0.0, + [23] = 0.0, + [24] = 0.0, + [25] = 0.0, + [26] = 0.0, + [27] = 0.0, + [28] = 0.0, + [29] = 0.0, + [30] = 0.0, + [31] = 0.0, + [32] = 3.8671874999999996, // + [33] = 4.3291015625, // ! + [34] = 5.048828125, // " + [35] = 9.001953125, // # + [36] = 6.9931640625, // $ + [37] = 11.837890625, // % + [38] = 7.992187499999999, // & + [39] = 2.9541015625, // ' + [40] = 4.9951171875, // ( + [41] = 4.9951171875, // ) + [42] = 6.9931640625, // * + [43] = 9.001953125, // + + [44] = 4.00146484375, // , + [45] = 4.9951171875, // - + [46] = 4.00146484375, // . + [47] = 4.9951171875, // / + [48] = 6.9931640625, // 0 + [49] = 6.9931640625, // 1 + [50] = 6.9931640625, // 2 + [51] = 6.9931640625, // 3 + [52] = 6.9931640625, // 4 + [53] = 6.9931640625, // 5 + [54] = 6.9931640625, // 6 + [55] = 6.9931640625, // 7 + [56] = 6.9931640625, // 8 + [57] = 6.9931640625, // 9 + [58] = 4.9951171875, // : + [59] = 4.9951171875, // ; + [60] = 9.001953125, // < + [61] = 9.001953125, // = + [62] = 9.001953125, // > + [63] = 5.99951171875, // ? + [64] = 11.0, // @ + [65] = 7.51953125, // A + [66] = 7.541015625, // B + [67] = 7.680664062499999, // C + [68] = 8.4755859375, // D + [69] = 6.95556640625, // E + [70] = 6.32177734375, // F + [71] = 8.529296875, // G + [72] = 8.26611328125, // H + [73] = 4.6298828125, // I + [74] = 5.00048828125, // J + [75] = 7.62158203125, // K + [76] = 6.123046875, // L + [77] = 9.2705078125, // M + [78] = 8.228515625, // N + [79] = 8.658203125, // O + [80] = 6.63330078125, // P + [81] = 8.658203125, // Q + [82] = 7.6484375, // R + [83] = 7.51953125, // S + [84] = 6.7783203125, // T + [85] = 8.05126953125, // U + [86] = 7.51953125, // V + [87] = 10.87646484375, // W + [88] = 7.53564453125, // X + [89] = 6.767578125, // Y + [90] = 7.53564453125, // Z + [91] = 4.9951171875, // [ + [92] = 4.9951171875, // backslash + [93] = 4.9951171875, // ] + [94] = 9.001953125, // ^ + [95] = 6.9931640625, // _ + [96] = 6.9931640625, // ` + [97] = 6.6064453125, // a + [98] = 6.853515625, // b + [99] = 5.73095703125, // c + [100] = 6.853515625, // d + [101] = 6.552734375, // e + [102] = 3.8671874999999996, // f + [103] = 6.853515625, // g + [104] = 6.9609375, // h + [105] = 3.0185546875, // i + [106] = 3.78662109375, // j + [107] = 6.509765625, // k + [108] = 3.0185546875, // l + [109] = 10.69921875, // m + [110] = 6.9609375, // n + [111] = 6.67626953125, // o + [112] = 6.853515625, // p + [113] = 6.853515625, // q + [114] = 4.6943359375, // r + [115] = 5.73095703125, // s + [116] = 4.33447265625, // t + [117] = 6.9609375, // u + [118] = 6.509765625, // v + [119] = 9.001953125, // w + [120] = 6.509765625, // x + [121] = 6.509765625, // y + [122] = 5.779296875, // z + [123] = 6.982421875, // { + [124] = 4.9951171875, // | + [125] = 6.982421875, // } + [126] = 9.001953125, // ~ + [127] = 0.0 +}; + +// find the width of the string using the verdana 11points font +static inline double verdana11_width(const char *s, float em_size) { + double w = 0.0; + + while(*s) { + // if UTF8 multibyte char found and guess it's width equal 1em + // as label width will be updated with JavaScript this is not so important + + // TODO: maybe move UTF8 functions from url.c to separate util in libnetdata + // then use url_utf8_get_byte_length etc. + if(IS_UTF8_STARTBYTE(*s)) { + s++; + while(IS_UTF8_BYTE(*s) && !IS_UTF8_STARTBYTE(*s)){ + s++; + } + w += em_size; + } + else { + if(likely(!(*s & 0x80))){ // Byte 1XXX XXXX is not valid in UTF8 + double t = verdana11_widths[(unsigned char)*s]; + if(t != 0.0) + w += t + VERDANA_KERNING; + } + s++; + } + } + + w -= VERDANA_KERNING; + w += VERDANA_PADDING; + return w; +} + +static inline size_t escape_xmlz(char *dst, const char *src, size_t len) { + size_t i = len; + + // required escapes from + // https://github.com/badges/shields/blob/master/badge.js + while(*src && i) { + switch(*src) { + case '\\': + *dst++ = '/'; + src++; + i--; + break; + + case '&': + if(i > 5) { + strcpy(dst, "&"); + i -= 5; + dst += 5; + src++; + } + else goto cleanup; + break; + + case '<': + if(i > 4) { + strcpy(dst, "<"); + i -= 4; + dst += 4; + src++; + } + else goto cleanup; + break; + + case '>': + if(i > 4) { + strcpy(dst, ">"); + i -= 4; + dst += 4; + src++; + } + else goto cleanup; + break; + + case '"': + if(i > 6) { + strcpy(dst, """); + i -= 6; + dst += 6; + src++; + } + else goto cleanup; + break; + + case '\'': + if(i > 6) { + strcpy(dst, "'"); + i -= 6; + dst += 6; + src++; + } + else goto cleanup; + break; + + default: + i--; + *dst++ = *src++; + break; + } + } + +cleanup: + *dst = '\0'; + return len - i; +} + +static inline char *format_value_with_precision_and_unit(char *value_string, size_t value_string_len, calculated_number value, const char *units, int precision) { + if(unlikely(isnan(value) || isinf(value))) + value = 0.0; + + char *separator = ""; + if(unlikely(isalnum(*units))) + separator = " "; + + if(precision < 0) { + int len, lstop = 0, trim_zeros = 1; + + calculated_number abs = value; + if(isless(value, 0)) { + lstop = 1; + abs = calculated_number_fabs(value); + } + + if(isgreaterequal(abs, 1000)) { + len = snprintfz(value_string, value_string_len, "%0.0" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + trim_zeros = 0; + } + else if(isgreaterequal(abs, 10)) len = snprintfz(value_string, value_string_len, "%0.1" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else if(isgreaterequal(abs, 1)) len = snprintfz(value_string, value_string_len, "%0.2" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else if(isgreaterequal(abs, 0.1)) len = snprintfz(value_string, value_string_len, "%0.2" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else if(isgreaterequal(abs, 0.01)) len = snprintfz(value_string, value_string_len, "%0.4" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else if(isgreaterequal(abs, 0.001)) len = snprintfz(value_string, value_string_len, "%0.5" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else if(isgreaterequal(abs, 0.0001)) len = snprintfz(value_string, value_string_len, "%0.6" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + else len = snprintfz(value_string, value_string_len, "%0.7" LONG_DOUBLE_MODIFIER, (LONG_DOUBLE) value); + + if(unlikely(trim_zeros)) { + int l; + // remove trailing zeros from the decimal part + for(l = len - 1; l > lstop; l--) { + if(likely(value_string[l] == '0')) { + value_string[l] = '\0'; + len--; + } + + else if(unlikely(value_string[l] == '.')) { + value_string[l] = '\0'; + len--; + break; + } + + else + break; + } + } + + if(unlikely(len <= 0)) len = 1; + snprintfz(&value_string[len], value_string_len - len, "%s%s", separator, units); + } + else { + if(precision > 50) precision = 50; + snprintfz(value_string, value_string_len, "%0.*" LONG_DOUBLE_MODIFIER "%s%s", precision, (LONG_DOUBLE) value, separator, units); + } + + return value_string; +} + +typedef enum badge_units_format { + UNITS_FORMAT_NONE, + UNITS_FORMAT_SECONDS, + UNITS_FORMAT_SECONDS_AGO, + UNITS_FORMAT_MINUTES, + UNITS_FORMAT_MINUTES_AGO, + UNITS_FORMAT_HOURS, + UNITS_FORMAT_HOURS_AGO, + UNITS_FORMAT_ONOFF, + UNITS_FORMAT_UPDOWN, + UNITS_FORMAT_OKERROR, + UNITS_FORMAT_OKFAILED, + UNITS_FORMAT_EMPTY, + UNITS_FORMAT_PERCENT +} UNITS_FORMAT; + + +static struct units_formatter { + const char *units; + uint32_t hash; + UNITS_FORMAT format; +} badge_units_formatters[] = { + { "seconds", 0, UNITS_FORMAT_SECONDS }, + { "seconds ago", 0, UNITS_FORMAT_SECONDS_AGO }, + { "minutes", 0, UNITS_FORMAT_MINUTES }, + { "minutes ago", 0, UNITS_FORMAT_MINUTES_AGO }, + { "hours", 0, UNITS_FORMAT_HOURS }, + { "hours ago", 0, UNITS_FORMAT_HOURS_AGO }, + { "on/off", 0, UNITS_FORMAT_ONOFF }, + { "on-off", 0, UNITS_FORMAT_ONOFF }, + { "onoff", 0, UNITS_FORMAT_ONOFF }, + { "up/down", 0, UNITS_FORMAT_UPDOWN }, + { "up-down", 0, UNITS_FORMAT_UPDOWN }, + { "updown", 0, UNITS_FORMAT_UPDOWN }, + { "ok/error", 0, UNITS_FORMAT_OKERROR }, + { "ok-error", 0, UNITS_FORMAT_OKERROR }, + { "okerror", 0, UNITS_FORMAT_OKERROR }, + { "ok/failed", 0, UNITS_FORMAT_OKFAILED }, + { "ok-failed", 0, UNITS_FORMAT_OKFAILED }, + { "okfailed", 0, UNITS_FORMAT_OKFAILED }, + { "empty", 0, UNITS_FORMAT_EMPTY }, + { "null", 0, UNITS_FORMAT_EMPTY }, + { "percentage", 0, UNITS_FORMAT_PERCENT }, + { "percent", 0, UNITS_FORMAT_PERCENT }, + { "pcent", 0, UNITS_FORMAT_PERCENT }, + + // terminator + { NULL, 0, UNITS_FORMAT_NONE } +}; + +inline char *format_value_and_unit(char *value_string, size_t value_string_len, calculated_number value, const char *units, int precision) { + static int max = -1; + int i; + + if(unlikely(max == -1)) { + for(i = 0; badge_units_formatters[i].units; i++) + badge_units_formatters[i].hash = simple_hash(badge_units_formatters[i].units); + + max = i; + } + + if(unlikely(!units)) units = ""; + uint32_t hash_units = simple_hash(units); + + UNITS_FORMAT format = UNITS_FORMAT_NONE; + for(i = 0; i < max; i++) { + struct units_formatter *ptr = &badge_units_formatters[i]; + + if(hash_units == ptr->hash && !strcmp(units, ptr->units)) { + format = ptr->format; + break; + } + } + + if(unlikely(format == UNITS_FORMAT_SECONDS || format == UNITS_FORMAT_SECONDS_AGO)) { + if(value == 0.0) { + snprintfz(value_string, value_string_len, "%s", "now"); + return value_string; + } + else if(isnan(value) || isinf(value)) { + snprintfz(value_string, value_string_len, "%s", "undefined"); + return value_string; + } + + const char *suffix = (format == UNITS_FORMAT_SECONDS_AGO)?" ago":""; + + size_t s = (size_t)value; + size_t d = s / 86400; + s = s % 86400; + + size_t h = s / 3600; + s = s % 3600; + + size_t m = s / 60; + s = s % 60; + + if(d) + snprintfz(value_string, value_string_len, "%zu %s %02zu:%02zu:%02zu%s", d, (d == 1)?"day":"days", h, m, s, suffix); + else + snprintfz(value_string, value_string_len, "%02zu:%02zu:%02zu%s", h, m, s, suffix); + + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_MINUTES || format == UNITS_FORMAT_MINUTES_AGO)) { + if(value == 0.0) { + snprintfz(value_string, value_string_len, "%s", "now"); + return value_string; + } + else if(isnan(value) || isinf(value)) { + snprintfz(value_string, value_string_len, "%s", "undefined"); + return value_string; + } + + const char *suffix = (format == UNITS_FORMAT_MINUTES_AGO)?" ago":""; + + size_t m = (size_t)value; + size_t d = m / (60 * 24); + m = m % (60 * 24); + + size_t h = m / 60; + m = m % 60; + + if(d) + snprintfz(value_string, value_string_len, "%zud %02zuh %02zum%s", d, h, m, suffix); + else + snprintfz(value_string, value_string_len, "%zuh %zum%s", h, m, suffix); + + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_HOURS || format == UNITS_FORMAT_HOURS_AGO)) { + if(value == 0.0) { + snprintfz(value_string, value_string_len, "%s", "now"); + return value_string; + } + else if(isnan(value) || isinf(value)) { + snprintfz(value_string, value_string_len, "%s", "undefined"); + return value_string; + } + + const char *suffix = (format == UNITS_FORMAT_HOURS_AGO)?" ago":""; + + size_t h = (size_t)value; + size_t d = h / 24; + h = h % 24; + + if(d) + snprintfz(value_string, value_string_len, "%zud %zuh%s", d, h, suffix); + else + snprintfz(value_string, value_string_len, "%zuh%s", h, suffix); + + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_ONOFF)) { + snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"on":"off"); + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_UPDOWN)) { + snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"up":"down"); + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_OKERROR)) { + snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"ok":"error"); + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_OKFAILED)) { + snprintfz(value_string, value_string_len, "%s", (value != 0.0)?"ok":"failed"); + return value_string; + } + + else if(unlikely(format == UNITS_FORMAT_EMPTY)) + units = ""; + + else if(unlikely(format == UNITS_FORMAT_PERCENT)) + units = "%"; + + if(unlikely(isnan(value) || isinf(value))) { + strcpy(value_string, "-"); + return value_string; + } + + return format_value_with_precision_and_unit(value_string, value_string_len, value, units, precision); +} + +static struct badge_color { + const char *name; + uint32_t hash; + const char *color; +} badge_colors[] = { + + // colors from: + // https://github.com/badges/shields/blob/master/colorscheme.json + + { "brightgreen", 0, "4c1" }, + { "green", 0, "97CA00" }, + { "yellow", 0, "dfb317" }, + { "yellowgreen", 0, "a4a61d" }, + { "orange", 0, "fe7d37" }, + { "red", 0, "e05d44" }, + { "blue", 0, "007ec6" }, + { "grey", 0, "555" }, + { "gray", 0, "555" }, + { "lightgrey", 0, "9f9f9f" }, + { "lightgray", 0, "9f9f9f" }, + + // terminator + { NULL, 0, NULL } +}; + +static inline const char *color_map(const char *color, const char *def) { + static int max = -1; + int i; + + if(unlikely(max == -1)) { + for(i = 0; badge_colors[i].name ;i++) + badge_colors[i].hash = simple_hash(badge_colors[i].name); + + max = i; + } + + uint32_t hash = simple_hash(color); + + for(i = 0; i < max; i++) { + struct badge_color *ptr = &badge_colors[i]; + + if(hash == ptr->hash && !strcmp(color, ptr->name)) + return ptr->color; + } + + return def; +} + +typedef enum color_comparison { + COLOR_COMPARE_EQUAL, + COLOR_COMPARE_NOTEQUAL, + COLOR_COMPARE_LESS, + COLOR_COMPARE_LESSEQUAL, + COLOR_COMPARE_GREATER, + COLOR_COMPARE_GREATEREQUAL, +} BADGE_COLOR_COMPARISON; + +static inline void calc_colorz(const char *color, char *final, size_t len, calculated_number value) { + if(isnan(value) || isinf(value)) + value = NAN; + + char color_buffer[256 + 1] = ""; + char value_buffer[256 + 1] = ""; + BADGE_COLOR_COMPARISON comparison = COLOR_COMPARE_GREATER; + + // example input: + // color<max|color>min|color:null... + + const char *c = color; + while(*c) { + char *dc = color_buffer, *dv = NULL; + size_t ci = 0, vi = 0; + + const char *t = c; + + while(*t && *t != '|') { + switch(*t) { + case '!': + if(t[1] == '=') t++; + comparison = COLOR_COMPARE_NOTEQUAL; + dv = value_buffer; + break; + + case '=': + case ':': + comparison = COLOR_COMPARE_EQUAL; + dv = value_buffer; + break; + + case '}': + case ')': + case '>': + if(t[1] == '=') { + comparison = COLOR_COMPARE_GREATEREQUAL; + t++; + } + else + comparison = COLOR_COMPARE_GREATER; + dv = value_buffer; + break; + + case '{': + case '(': + case '<': + if(t[1] == '=') { + comparison = COLOR_COMPARE_LESSEQUAL; + t++; + } + else if(t[1] == '>' || t[1] == ')' || t[1] == '}') { + comparison = COLOR_COMPARE_NOTEQUAL; + t++; + } + else + comparison = COLOR_COMPARE_LESS; + dv = value_buffer; + break; + + default: + if(dv) { + if(vi < 256) { + vi++; + *dv++ = *t; + } + } + else { + if(ci < 256) { + ci++; + *dc++ = *t; + } + } + break; + } + + t++; + } + + // prepare for next iteration + if(*t == '|') t++; + c = t; + + // do the math + *dc = '\0'; + if(dv) { + *dv = '\0'; + calculated_number v; + + if(!*value_buffer || !strcmp(value_buffer, "null")) { + v = NAN; + } + else { + v = str2l(value_buffer); + if(isnan(v) || isinf(v)) + v = NAN; + } + + if(unlikely(isnan(value) || isnan(v))) { + if(isnan(value) && isnan(v)) + break; + } + else { + if (unlikely(comparison == COLOR_COMPARE_LESS && isless(value, v))) break; + else if (unlikely(comparison == COLOR_COMPARE_LESSEQUAL && islessequal(value, v))) break; + else if (unlikely(comparison == COLOR_COMPARE_GREATER && isgreater(value, v))) break; + else if (unlikely(comparison == COLOR_COMPARE_GREATEREQUAL && isgreaterequal(value, v))) break; + else if (unlikely(comparison == COLOR_COMPARE_EQUAL && !islessgreater(value, v))) break; + else if (unlikely(comparison == COLOR_COMPARE_NOTEQUAL && islessgreater(value, v))) break; + } + } + else + break; + } + + const char *b; + if(color_buffer[0]) + b = color_buffer; + else + b = color; + + strncpyz(final, b, len); +} + +// value + units +#define VALUE_STRING_SIZE 100 + +// label +#define LABEL_STRING_SIZE 200 + +// colors +#define COLOR_STRING_SIZE 100 + +static inline int allowed_hexa_char(char x) { + return ( (x >= '0' && x <= '9') || + (x >= 'a' && x <= 'f') || + (x >= 'A' && x <= 'F') + ); +} + +static int html_color_check(const char *str) { + int i = 0; + while(str[i]) { + if(!allowed_hexa_char(str[i])) + return 0; + if(unlikely(i >= 6)) + return 0; + i++; + } + // want to allow either RGB or RRGGBB + return ( i == 6 || i == 3 ); +} + +// Will parse color arg as #RRGGBB or #RGB or one of the colors +// from color_map hash table +// if parsing fails (argument error) it will return default color +// given as default parameter (def) +// in any case it will return either color in "RRGGBB" or "RGB" format as string +// or whatever is given as def (without checking - caller responsible to give sensible +// safely escaped default) as default if it fails +// in any case this function must always return something we can put directly in XML +// so no escaping is necessary anymore (with excpetion of default where caller is responsible) +// to give sensible default +#define BADGE_SVG_COLOR_ARG_MAXLEN 20 + +static const char *parse_color_argument(const char *arg, const char *def) +{ + if( !arg ) + return def; + size_t len = strnlen(arg, BADGE_SVG_COLOR_ARG_MAXLEN); + if( len < 2 || len >= BADGE_SVG_COLOR_ARG_MAXLEN ) + return def; + if( html_color_check(arg) ) + return arg; + return color_map(arg, def); +} + +void buffer_svg(BUFFER *wb, const char *label, calculated_number value, const char *units, const char *label_color, const char *value_color, int precision, int scale, uint32_t options, int fixed_width_lbl, int fixed_width_val, const char* text_color_lbl, const char* text_color_val) { + char value_color_buffer[COLOR_STRING_SIZE + 1] + , value_string[VALUE_STRING_SIZE + 1] + , label_escaped[LABEL_STRING_SIZE + 1] + , value_escaped[VALUE_STRING_SIZE + 1]; + + const char *label_color_parsed; + const char *value_color_parsed; + + double label_width = (double)fixed_width_lbl, value_width = (double)fixed_width_val, total_width; + double height = 20.0, font_size = 11.0, text_offset = 5.8, round_corner = 3.0; + + if(scale < 100) scale = 100; + + if(unlikely(!value_color || !*value_color)) + value_color = (isnan(value) || isinf(value))?"999":"4c1"; + + calc_colorz(value_color, value_color_buffer, COLOR_STRING_SIZE, value); + format_value_and_unit(value_string, VALUE_STRING_SIZE, (options & RRDR_OPTION_DISPLAY_ABS)?calculated_number_fabs(value):value, units, precision); + + if(fixed_width_lbl <= 0 || fixed_width_val <= 0) { + label_width = verdana11_width(label, font_size) + (BADGE_HORIZONTAL_PADDING * 2); + value_width = verdana11_width(value_string, font_size) + (BADGE_HORIZONTAL_PADDING * 2); + } + total_width = label_width + value_width; + + escape_xmlz(label_escaped, label, LABEL_STRING_SIZE); + escape_xmlz(value_escaped, value_string, VALUE_STRING_SIZE); + + label_color_parsed = parse_color_argument(label_color, "555"); + value_color_parsed = parse_color_argument(value_color_buffer, "555"); + + wb->contenttype = CT_IMAGE_SVG_XML; + + total_width = total_width * scale / 100.0; + height = height * scale / 100.0; + font_size = font_size * scale / 100.0; + text_offset = text_offset * scale / 100.0; + label_width = label_width * scale / 100.0; + value_width = value_width * scale / 100.0; + round_corner = round_corner * scale / 100.0; + + // svg template from: + // https://raw.githubusercontent.com/badges/shields/master/templates/flat-template.svg + buffer_sprintf(wb, + "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"%0.2f\" height=\"%0.2f\">" + "<linearGradient id=\"smooth\" x2=\"0\" y2=\"100%%\">" + "<stop offset=\"0\" stop-color=\"#bbb\" stop-opacity=\".1\"/>" + "<stop offset=\"1\" stop-opacity=\".1\"/>" + "</linearGradient>" + "<mask id=\"round\">" + "<rect class=\"bdge-ttl-width\" width=\"%0.2f\" height=\"%0.2f\" rx=\"%0.2f\" fill=\"#fff\"/>" + "</mask>" + "<g mask=\"url(#round)\">" + "<rect class=\"bdge-rect-lbl\" width=\"%0.2f\" height=\"%0.2f\" fill=\"#%s\"/>", + total_width, height, + total_width, height, round_corner, + label_width, height, label_color_parsed); //<rect class="bdge-rect-lbl" + + if(fixed_width_lbl > 0 && fixed_width_val > 0) { + buffer_sprintf(wb, + "<clipPath id=\"lbl-rect\">" + "<rect class=\"bdge-rect-lbl\" width=\"%0.2f\" height=\"%0.2f\"/>" + "</clipPath>", + label_width, height); //<clipPath id="lbl-rect"> <rect class="bdge-rect-lbl" + } + + buffer_sprintf(wb, + "<rect class=\"bdge-rect-val\" x=\"%0.2f\" width=\"%0.2f\" height=\"%0.2f\" fill=\"#%s\"/>", + label_width, value_width, height, value_color_parsed); + + if(fixed_width_lbl > 0 && fixed_width_val > 0) { + buffer_sprintf(wb, + "<clipPath id=\"val-rect\">" + "<rect class=\"bdge-rect-val\" x=\"%0.2f\" width=\"%0.2f\" height=\"%0.2f\"/>" + "</clipPath>", + label_width, value_width, height); + } + + buffer_sprintf(wb, + "<rect class=\"bdge-ttl-width\" width=\"%0.2f\" height=\"%0.2f\" fill=\"url(#smooth)\"/>" + "</g>" + "<g text-anchor=\"middle\" font-family=\"DejaVu Sans,Verdana,Geneva,sans-serif\" font-size=\"%0.2f\">" + "<text class=\"bdge-lbl-lbl\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#010101\" fill-opacity=\".3\" clip-path=\"url(#lbl-rect)\">%s</text>" + "<text class=\"bdge-lbl-lbl\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#%s\" clip-path=\"url(#lbl-rect)\">%s</text>" + "<text class=\"bdge-lbl-val\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#010101\" fill-opacity=\".3\" clip-path=\"url(#val-rect)\">%s</text>" + "<text class=\"bdge-lbl-val\" x=\"%0.2f\" y=\"%0.0f\" fill=\"#%s\" clip-path=\"url(#val-rect)\">%s</text>" + "</g>", + total_width, height, + font_size, + label_width / 2, ceil(height - text_offset), label_escaped, + label_width / 2, ceil(height - text_offset - 1.0), parse_color_argument(text_color_lbl, "fff"), label_escaped, + label_width + value_width / 2 -1, ceil(height - text_offset), value_escaped, + label_width + value_width / 2 -1, ceil(height - text_offset - 1.0), parse_color_argument(text_color_val, "fff"), value_escaped); + + if(fixed_width_lbl <= 0 || fixed_width_val <= 0){ + buffer_sprintf(wb, + "<script type=\"text/javascript\">" + "var bdg_horiz_padding = %d;" + "function netdata_bdge_each(list, attr, value){" + "Array.prototype.forEach.call(list, function(el){" + "el.setAttribute(attr, value);" + "});" + "};" + "var this_svg = document.currentScript.closest(\"svg\");" + "var elem_lbl = this_svg.getElementsByClassName(\"bdge-lbl-lbl\");" + "var elem_val = this_svg.getElementsByClassName(\"bdge-lbl-val\");" + "var lbl_size = elem_lbl[0].getBBox();" + "var val_size = elem_val[0].getBBox();" + "var width_total = lbl_size.width + bdg_horiz_padding*2;" + "this_svg.getElementsByClassName(\"bdge-rect-lbl\")[0].setAttribute(\"width\", width_total);" + "netdata_bdge_each(elem_lbl, \"x\", (lbl_size.width / 2) + bdg_horiz_padding);" + "netdata_bdge_each(elem_val, \"x\", width_total + (val_size.width / 2) + bdg_horiz_padding);" + "var val_rect = this_svg.getElementsByClassName(\"bdge-rect-val\")[0];" + "val_rect.setAttribute(\"width\", val_size.width + bdg_horiz_padding*2);" + "val_rect.setAttribute(\"x\", width_total);" + "width_total += val_size.width + bdg_horiz_padding*2;" + "var width_update_elems = this_svg.getElementsByClassName(\"bdge-ttl-width\");" + "netdata_bdge_each(width_update_elems, \"width\", width_total);" + "this_svg.setAttribute(\"width\", width_total);" + "</script>", + BADGE_HORIZONTAL_PADDING); + } + buffer_sprintf(wb, "</svg>"); +} + +#define BADGE_URL_ARG_LBL_COLOR "text_color_lbl" +#define BADGE_URL_ARG_VAL_COLOR "text_color_val" + +int web_client_api_request_v1_badge(RRDHOST *host, struct web_client *w, char *url) { + int ret = HTTP_RESP_BAD_REQUEST; + buffer_flush(w->response.data); + + BUFFER *dimensions = NULL; + + const char *chart = NULL + , *before_str = NULL + , *after_str = NULL + , *points_str = NULL + , *multiply_str = NULL + , *divide_str = NULL + , *label = NULL + , *units = NULL + , *label_color = NULL + , *value_color = NULL + , *refresh_str = NULL + , *precision_str = NULL + , *scale_str = NULL + , *alarm = NULL + , *fixed_width_lbl_str = NULL + , *fixed_width_val_str = NULL + , *text_color_lbl_str = NULL + , *text_color_val_str = NULL; + + int group = RRDR_GROUPING_AVERAGE; + uint32_t options = 0x00000000; + + while(url) { + char *value = mystrsep(&url, "&"); + if(!value || !*value) continue; + + char *name = mystrsep(&value, "="); + if(!name || !*name) continue; + if(!value || !*value) continue; + + debug(D_WEB_CLIENT, "%llu: API v1 badge.svg query param '%s' with value '%s'", w->id, name, value); + + // name and value are now the parameters + // they are not null and not empty + + if(!strcmp(name, "chart")) chart = value; + else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) { + if(!dimensions) + dimensions = buffer_create(100); + + buffer_strcat(dimensions, "|"); + buffer_strcat(dimensions, value); + } + else if(!strcmp(name, "after")) after_str = value; + else if(!strcmp(name, "before")) before_str = value; + else if(!strcmp(name, "points")) points_str = value; + else if(!strcmp(name, "group")) { + group = web_client_api_request_v1_data_group(value, RRDR_GROUPING_AVERAGE); + } + else if(!strcmp(name, "options")) { + options |= web_client_api_request_v1_data_options(value); + } + else if(!strcmp(name, "label")) label = value; + else if(!strcmp(name, "units")) units = value; + else if(!strcmp(name, "label_color")) label_color = value; + else if(!strcmp(name, "value_color")) value_color = value; + else if(!strcmp(name, "multiply")) multiply_str = value; + else if(!strcmp(name, "divide")) divide_str = value; + else if(!strcmp(name, "refresh")) refresh_str = value; + else if(!strcmp(name, "precision")) precision_str = value; + else if(!strcmp(name, "scale")) scale_str = value; + else if(!strcmp(name, "fixed_width_lbl")) fixed_width_lbl_str = value; + else if(!strcmp(name, "fixed_width_val")) fixed_width_val_str = value; + else if(!strcmp(name, "alarm")) alarm = value; + else if(!strcmp(name, BADGE_URL_ARG_LBL_COLOR)) text_color_lbl_str = value; + else if(!strcmp(name, BADGE_URL_ARG_VAL_COLOR)) text_color_val_str = value; + } + + int fixed_width_lbl = -1; + int fixed_width_val = -1; + + if(fixed_width_lbl_str && *fixed_width_lbl_str + && fixed_width_val_str && *fixed_width_val_str) { + fixed_width_lbl = str2i(fixed_width_lbl_str); + fixed_width_val = str2i(fixed_width_val_str); + } + + if(!chart || !*chart) { + buffer_no_cacheable(w->response.data); + buffer_sprintf(w->response.data, "No chart id is given at the request."); + goto cleanup; + } + + int scale = (scale_str && *scale_str)?str2i(scale_str):100; + + RRDSET *st = rrdset_find(host, chart); + if(!st) st = rrdset_find_byname(host, chart); + if(!st) { + buffer_no_cacheable(w->response.data); + buffer_svg(w->response.data, "chart not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1, NULL, NULL); + ret = HTTP_RESP_OK; + goto cleanup; + } + st->last_accessed_time = now_realtime_sec(); + + RRDCALC *rc = NULL; + if(alarm) { + rc = rrdcalc_find(st, alarm); + if (!rc) { + buffer_no_cacheable(w->response.data); + buffer_svg(w->response.data, "alarm not found", NAN, "", NULL, NULL, -1, scale, 0, -1, -1, NULL, NULL); + ret = HTTP_RESP_OK; + goto cleanup; + } + } + + long long multiply = (multiply_str && *multiply_str )?str2l(multiply_str):1; + long long divide = (divide_str && *divide_str )?str2l(divide_str):1; + long long before = (before_str && *before_str )?str2l(before_str):0; + long long after = (after_str && *after_str )?str2l(after_str):-st->update_every; + int points = (points_str && *points_str )?str2i(points_str):1; + int precision = (precision_str && *precision_str)?str2i(precision_str):-1; + + if(!multiply) multiply = 1; + if(!divide) divide = 1; + + int refresh = 0; + if(refresh_str && *refresh_str) { + if(!strcmp(refresh_str, "auto")) { + if(rc) refresh = rc->update_every; + else if(options & RRDR_OPTION_NOT_ALIGNED) + refresh = st->update_every; + else { + refresh = (int)(before - after); + if(refresh < 0) refresh = -refresh; + } + } + else { + refresh = str2i(refresh_str); + if(refresh < 0) refresh = -refresh; + } + } + + if(!label) { + if(alarm) { + char *s = (char *)alarm; + while(*s) { + if(*s == '_') *s = ' '; + s++; + } + label = alarm; + } + else if(dimensions) { + const char *dim = buffer_tostring(dimensions); + if(*dim == '|') dim++; + label = dim; + } + else + label = st->name; + } + if(!units) { + if(alarm) { + if(rc->units) + units = rc->units; + else + units = ""; + } + else if(options & RRDR_OPTION_PERCENTAGE) + units = "%"; + else + units = st->units; + } + + debug(D_WEB_CLIENT, "%llu: API command 'badge.svg' for chart '%s', alarm '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%d', options '0x%08x'" + , w->id + , chart + , alarm?alarm:"" + , (dimensions)?buffer_tostring(dimensions):"" + , after + , before + , points + , group + , options + ); + + if(rc) { + if (refresh > 0) { + buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh); + w->response.data->expires = now_realtime_sec() + refresh; + } + else buffer_no_cacheable(w->response.data); + + if(!value_color) { + switch(rc->status) { + case RRDCALC_STATUS_CRITICAL: + value_color = "red"; + break; + + case RRDCALC_STATUS_WARNING: + value_color = "orange"; + break; + + case RRDCALC_STATUS_CLEAR: + value_color = "brightgreen"; + break; + + case RRDCALC_STATUS_UNDEFINED: + value_color = "lightgrey"; + break; + + case RRDCALC_STATUS_UNINITIALIZED: + value_color = "#000"; + break; + + default: + value_color = "grey"; + break; + } + } + + buffer_svg(w->response.data, + label, + (isnan(rc->value)||isinf(rc->value)) ? rc->value : rc->value * multiply / divide, + units, + label_color, + value_color, + precision, + scale, + options, + fixed_width_lbl, + fixed_width_val, + text_color_lbl_str, + text_color_val_str + ); + ret = HTTP_RESP_OK; + } + else { + time_t latest_timestamp = 0; + int value_is_null = 1; + calculated_number n = NAN; + ret = HTTP_RESP_INTERNAL_SERVER_ERROR; + + // if the collected value is too old, don't calculate its value + if (rrdset_last_entry_t(st) >= (now_realtime_sec() - (st->update_every * st->gap_when_lost_iterations_above))) + ret = rrdset2value_api_v1(st, w->response.data, &n, (dimensions) ? buffer_tostring(dimensions) : NULL + , points, after, before, group, 0, options, NULL, &latest_timestamp, &value_is_null); + + // if the value cannot be calculated, show empty badge + if (ret != HTTP_RESP_OK) { + buffer_no_cacheable(w->response.data); + value_is_null = 1; + n = 0; + ret = HTTP_RESP_OK; + } + else if (refresh > 0) { + buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh); + w->response.data->expires = now_realtime_sec() + refresh; + } + else buffer_no_cacheable(w->response.data); + + // render the badge + buffer_svg(w->response.data, + label, + (value_is_null)?NAN:(n * multiply / divide), + units, + label_color, + value_color, + precision, + scale, + options, + fixed_width_lbl, + fixed_width_val, + text_color_lbl_str, + text_color_val_str + ); + } + + cleanup: + buffer_free(dimensions); + return ret; +} |