From a836a244a3d2bdd4da1ee2641e3e957850668cea Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 8 May 2023 18:27:04 +0200 Subject: Adding upstream version 1.39.0. Signed-off-by: Daniel Baumann --- libnetdata/buffer/README.md | 2 +- libnetdata/buffer/buffer.c | 466 +++++++++++----------- libnetdata/buffer/buffer.h | 926 +++++++++++++++++++++++++++++++++++++++++--- 3 files changed, 1096 insertions(+), 298 deletions(-) (limited to 'libnetdata/buffer') diff --git a/libnetdata/buffer/README.md b/libnetdata/buffer/README.md index 6a84fd8a3..2937ae141 100644 --- a/libnetdata/buffer/README.md +++ b/libnetdata/buffer/README.md @@ -4,7 +4,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/buffe sidebar_label: "BUFFER library" learn_status: "Published" learn_topic_type: "Tasks" -learn_rel_path: "Developers/libnetdata libraries" +learn_rel_path: "Developers/libnetdata" --> # BUFFER diff --git a/libnetdata/buffer/buffer.c b/libnetdata/buffer/buffer.c index eeb283209..142fbca14 100644 --- a/libnetdata/buffer/buffer.c +++ b/libnetdata/buffer/buffer.c @@ -2,39 +2,16 @@ #include "../libnetdata.h" -#define BUFFER_OVERFLOW_EOF "EOF" - static inline void buffer_overflow_init(BUFFER *b) { b->buffer[b->size] = '\0'; strcpy(&b->buffer[b->size + 1], BUFFER_OVERFLOW_EOF); } -#ifdef NETDATA_INTERNAL_CHECKS -#define buffer_overflow_check(b) _buffer_overflow_check(b, __FILE__, __FUNCTION__, __LINE__) -#else -#define buffer_overflow_check(b) -#endif - -static inline void _buffer_overflow_check(BUFFER *b, const char *file, const char *function, const unsigned long line) -{ - if(b->len > b->size) { - error("BUFFER: length %zu is above size %zu, at line %lu, at function %s() of file '%s'.", b->len, b->size, line, function, file); - b->len = b->size; - } - - if(b->buffer[b->size] != '\0' || strcmp(&b->buffer[b->size + 1], BUFFER_OVERFLOW_EOF) != 0) { - error("BUFFER: detected overflow at line %lu, at function %s() of file '%s'.", line, function, file); - buffer_overflow_init(b); - } -} - - -void buffer_reset(BUFFER *wb) -{ +void buffer_reset(BUFFER *wb) { buffer_flush(wb); - wb->contenttype = CT_TEXT_PLAIN; + wb->content_type = CT_TEXT_PLAIN; wb->options = 0; wb->date = 0; wb->expires = 0; @@ -52,8 +29,7 @@ const char *buffer_tostring(BUFFER *wb) return(wb->buffer); } -void buffer_char_replace(BUFFER *wb, char from, char to) -{ +void buffer_char_replace(BUFFER *wb, char from, char to) { char *s = wb->buffer, *end = &wb->buffer[wb->len]; while(s != end) { @@ -64,212 +40,25 @@ void buffer_char_replace(BUFFER *wb, char from, char to) buffer_overflow_check(wb); } -// This trick seems to give an 80% speed increase in 32bit systems -// print_number_llu_r() will just print the digits up to the -// point the remaining value fits in 32 bits, and then calls -// print_number_lu_r() to print the rest with 32 bit arithmetic. - -inline char *print_number_lu_r(char *str, unsigned long uvalue) { - char *wstr = str; - - // print each digit - do *wstr++ = (char)('0' + (uvalue % 10)); while(uvalue /= 10); - return wstr; -} - -inline char *print_number_llu_r(char *str, unsigned long long uvalue) { - char *wstr = str; - - // print each digit - do *wstr++ = (char)('0' + (uvalue % 10)); while((uvalue /= 10) && uvalue > (unsigned long long)0xffffffff); - if(uvalue) return print_number_lu_r(wstr, uvalue); - return wstr; -} - -inline char *print_number_llu_r_smart(char *str, unsigned long long uvalue) { - switch (sizeof(void *)) { - case 4: - str = (uvalue > (unsigned long long) 0xffffffff) ? print_number_llu_r(str, uvalue) : - print_number_lu_r(str, uvalue); - break; - case 8: - do { - *str++ = (char) ('0' + (uvalue % 10)); - } while (uvalue /= 10); - break; - default: - fatal("Netdata supports only 32-bit & 64-bit systems."); - } - - return str; -} - -void buffer_print_llu(BUFFER *wb, unsigned long long uvalue) -{ - buffer_need_bytes(wb, 50); - - char *str = &wb->buffer[wb->len]; - char *wstr = str; - - switch (sizeof(void *)) { - case 4: - wstr = (uvalue > (unsigned long long) 0xffffffff) ? print_number_llu_r(wstr, uvalue) : - print_number_lu_r(wstr, uvalue); - break; - case 8: - do { - *wstr++ = (char) ('0' + (uvalue % 10)); - } while (uvalue /= 10); - break; - default: - fatal("Netdata supports only 32-bit & 64-bit systems."); +void buffer_print_sn_flags(BUFFER *wb, SN_FLAGS flags, bool send_anomaly_bit) { + if(unlikely(flags == SN_EMPTY_SLOT)) { + buffer_fast_strcat(wb, "E", 1); + return; } - // terminate it - *wstr = '\0'; - - // reverse it - char *begin = str, *end = wstr - 1, aux; - while (end > begin) aux = *end, *end-- = *begin, *begin++ = aux; - - // return the buffer length - wb->len += wstr - str; -} - -void buffer_print_ll(BUFFER *wb, long long value) -{ - buffer_need_bytes(wb, 50); - - if(value < 0) { - buffer_fast_strcat(wb, "-", 1); - value = -value; + size_t printed = 0; + if(likely(send_anomaly_bit && (flags & SN_FLAG_NOT_ANOMALOUS))) { + buffer_fast_strcat(wb, "A", 1); + printed++; } - buffer_print_llu(wb, value); -} - -static unsigned char bits03_to_hex[16] = { - [0] = '0', - [1] = '1', - [2] = '2', - [3] = '3', - [4] = '4', - [5] = '5', - [6] = '6', - [7] = '7', - [8] = '8', - [9] = '9', - [10] = 'A', - [11] = 'B', - [12] = 'C', - [13] = 'D', - [14] = 'E', - [15] = 'F' -}; - -void buffer_print_llu_hex(BUFFER *wb, unsigned long long value) -{ - unsigned char buffer[sizeof(unsigned long long) * 2 + 2 + 1]; // 8 bytes * 2 + '0x' + '\0' - unsigned char *e = &buffer[sizeof(unsigned long long) * 2 + 2]; - unsigned char *p = e; - - *p-- = '\0'; - *p-- = bits03_to_hex[value & 0xF]; - value >>= 4; - if(value) { - *p-- = bits03_to_hex[value & 0xF]; - value >>= 4; - - while(value) { - *p-- = bits03_to_hex[value & 0xF]; - value >>= 4; - - if(value) { - *p-- = bits03_to_hex[value & 0xF]; - value >>= 4; - } - } + if(unlikely(flags & SN_FLAG_RESET)) { + buffer_fast_strcat(wb, "R", 1); + printed++; } - *p-- = 'x'; - *p = '0'; - buffer_fast_strcat(wb, (char *)p, e - p); -} - -void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len) { - if(unlikely(!txt || !*txt)) return; - - buffer_need_bytes(wb, len + 1); - - char *s = &wb->buffer[wb->len]; - const char *end = &txt[len + 1]; - - while(txt != end) - *s++ = *txt++; - - wb->len += len; - - // keep it NULL terminating - // not counting it at wb->len - wb->buffer[wb->len] = '\0'; -} - -void buffer_strcat(BUFFER *wb, const char *txt) -{ - // buffer_sprintf(wb, "%s", txt); - - if(unlikely(!txt || !*txt)) return; - - buffer_need_bytes(wb, 1); - - char *s = &wb->buffer[wb->len], *start, *end = &wb->buffer[wb->size]; - size_t len = wb->len; - - start = s; - while(*txt && s != end) - *s++ = *txt++; - - len += s - start; - - wb->len = len; - buffer_overflow_check(wb); - - if(*txt) { - debug(D_WEB_BUFFER, "strcat(): increasing web_buffer at position %zu, size = %zu\n", wb->len, wb->size); - len = strlen(txt); - buffer_fast_strcat(wb, txt, len); - } - else { - // terminate the string - // without increasing the length - buffer_need_bytes(wb, (size_t)1); - wb->buffer[wb->len] = '\0'; - } -} - -void buffer_strcat_jsonescape(BUFFER *wb, const char *txt) -{ - while(*txt) { - switch(*txt) { - case '\\': - buffer_need_bytes(wb, 2); - wb->buffer[wb->len++] = '\\'; - wb->buffer[wb->len++] = '\\'; - break; - case '"': - buffer_need_bytes(wb, 2); - wb->buffer[wb->len++] = '\\'; - wb->buffer[wb->len++] = '"'; - break; - default: { - buffer_need_bytes(wb, 1); - wb->buffer[wb->len++] = *txt; - } - } - txt++; - } - - buffer_overflow_check(wb); + if(!printed) + buffer_fast_strcat(wb, "''", 2); } void buffer_strcat_htmlescape(BUFFER *wb, const char *txt) @@ -358,25 +147,6 @@ void buffer_sprintf(BUFFER *wb, const char *fmt, ...) // the buffer is \0 terminated by vsnprintf } - -void buffer_rrd_value(BUFFER *wb, NETDATA_DOUBLE value) -{ - buffer_need_bytes(wb, 50); - - if(isnan(value) || isinf(value)) { - buffer_strcat(wb, "null"); - return; - } - else - wb->len += print_netdata_double(&wb->buffer[wb->len], value); - - // terminate it - buffer_need_bytes(wb, 1); - wb->buffer[wb->len] = '\0'; - - buffer_overflow_check(wb); -} - // generate a javascript date, the fastest possible way... void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds) { @@ -482,7 +252,7 @@ BUFFER *buffer_create(size_t size, size_t *statistics) b->buffer = mallocz(size + sizeof(BUFFER_OVERFLOW_EOF) + 2); b->buffer[0] = '\0'; b->size = size; - b->contenttype = CT_TEXT_PLAIN; + b->content_type = CT_TEXT_PLAIN; b->statistics = statistics; buffer_overflow_init(b); buffer_overflow_check(b); @@ -531,3 +301,205 @@ void buffer_increase(BUFFER *b, size_t free_size_required) { buffer_overflow_init(b); buffer_overflow_check(b); } + +// ---------------------------------------------------------------------------- + +void buffer_json_initialize(BUFFER *wb, const char *key_quote, const char *value_quote, int depth, + bool add_anonymous_object, bool minify) { + strncpyz(wb->json.key_quote, key_quote, BUFFER_QUOTE_MAX_SIZE); + strncpyz(wb->json.value_quote, value_quote, BUFFER_QUOTE_MAX_SIZE); + + wb->json.minify = minify; + wb->json.depth = (int8_t)(depth - 1); + _buffer_json_depth_push(wb, BUFFER_JSON_OBJECT); + + if(add_anonymous_object) + buffer_fast_strcat(wb, "{", 1); +} + +void buffer_json_finalize(BUFFER *wb) { + while(wb->json.depth >= 0) { + switch(wb->json.stack[wb->json.depth].type) { + case BUFFER_JSON_OBJECT: + buffer_json_object_close(wb); + break; + + case BUFFER_JSON_ARRAY: + buffer_json_array_close(wb); + break; + + default: + internal_fatal(true, "BUFFER: unknown json member type in stack"); + break; + } + } + + if(!wb->json.minify) + buffer_fast_strcat(wb, "\n", 1); +} + +// ---------------------------------------------------------------------------- + +const char hex_digits[16] = "0123456789ABCDEF"; +const char base64_digits[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; +unsigned char hex_value_from_ascii[256]; +unsigned char base64_value_from_ascii[256]; + +__attribute__((constructor)) void initialize_ascii_maps(void) { + for(size_t i = 0 ; i < 256 ; i++) { + hex_value_from_ascii[i] = 255; + base64_value_from_ascii[i] = 255; + } + + for(size_t i = 0; i < 16 ; i++) + hex_value_from_ascii[(int)hex_digits[i]] = i; + + for(size_t i = 0; i < 64 ; i++) + base64_value_from_ascii[(int)base64_digits[i]] = i; +} + +// ---------------------------------------------------------------------------- +// unit test + +static int buffer_expect(BUFFER *wb, const char *expected) { + const char *generated = buffer_tostring(wb); + + if(strcmp(generated, expected) != 0) { + error("BUFFER: mismatch.\nGenerated:\n%s\nExpected:\n%s\n", + generated, expected); + return 1; + } + + return 0; +} + +static int buffer_uint64_roundtrip(BUFFER *wb, NUMBER_ENCODING encoding, uint64_t value, const char *expected) { + int errors = 0; + buffer_flush(wb); + buffer_print_uint64_encoded(wb, encoding, value); + + if(expected) + errors += buffer_expect(wb, expected); + + uint64_t v = str2ull_encoded(buffer_tostring(wb)); + if(v != value) { + error("BUFFER: string '%s' does resolves to %llu, expected %llu", + buffer_tostring(wb), (unsigned long long)v, (unsigned long long)value); + errors++; + } + buffer_flush(wb); + return errors; +} + +static int buffer_int64_roundtrip(BUFFER *wb, NUMBER_ENCODING encoding, int64_t value, const char *expected) { + int errors = 0; + buffer_flush(wb); + buffer_print_int64_encoded(wb, encoding, value); + + if(expected) + errors += buffer_expect(wb, expected); + + int64_t v = str2ll_encoded(buffer_tostring(wb)); + if(v != value) { + error("BUFFER: string '%s' does resolves to %lld, expected %lld", + buffer_tostring(wb), (long long)v, (long long)value); + errors++; + } + buffer_flush(wb); + return errors; +} + +static int buffer_double_roundtrip(BUFFER *wb, NUMBER_ENCODING encoding, NETDATA_DOUBLE value, const char *expected) { + int errors = 0; + buffer_flush(wb); + buffer_print_netdata_double_encoded(wb, encoding, value); + + if(expected) + errors += buffer_expect(wb, expected); + + NETDATA_DOUBLE v = str2ndd_encoded(buffer_tostring(wb), NULL); + if(v != value) { + error("BUFFER: string '%s' does resolves to %.12f, expected %.12f", + buffer_tostring(wb), v, value); + errors++; + } + buffer_flush(wb); + return errors; +} + +int buffer_unittest(void) { + int errors = 0; + BUFFER *wb = buffer_create(0, NULL); + + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 0, "0"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_HEX, 0, "0x0"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_BASE64, 0, "#A"); + + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 1676071986, "1676071986"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_HEX, 1676071986, "0x63E6D432"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_BASE64, 1676071986, "#Bj5tQy"); + + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 18446744073709551615ULL, "18446744073709551615"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_HEX, 18446744073709551615ULL, "0xFFFFFFFFFFFFFFFF"); + buffer_uint64_roundtrip(wb, NUMBER_ENCODING_BASE64, 18446744073709551615ULL, "#P//////////"); + + buffer_int64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 0, "0"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_HEX, 0, "0x0"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_BASE64, 0, "#A"); + + buffer_int64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, -1676071986, "-1676071986"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_HEX, -1676071986, "-0x63E6D432"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_BASE64, -1676071986, "-#Bj5tQy"); + + buffer_int64_roundtrip(wb, NUMBER_ENCODING_DECIMAL, (int64_t)-9223372036854775807ULL, "-9223372036854775807"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_HEX, (int64_t)-9223372036854775807ULL, "-0x7FFFFFFFFFFFFFFF"); + buffer_int64_roundtrip(wb, NUMBER_ENCODING_BASE64, (int64_t)-9223372036854775807ULL, "-#H//////////"); + + buffer_double_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 0, "0"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_HEX, 0, "%0"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_BASE64, 0, "@A"); + + buffer_double_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 1.5, "1.5"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_HEX, 1.5, "%3FF8000000000000"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_BASE64, 1.5, "@D/4AAAAAAAA"); + + buffer_double_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 1.23e+14, "123000000000000"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_HEX, 1.23e+14, "%42DBF78AD3AC0000"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_BASE64, 1.23e+14, "@ELb94rTrAAA"); + + buffer_double_roundtrip(wb, NUMBER_ENCODING_DECIMAL, 9.12345678901234567890123456789e+45, "9.123456789012346128e+45"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_HEX, 9.12345678901234567890123456789e+45, "%497991C25C9E4309"); + buffer_double_roundtrip(wb, NUMBER_ENCODING_BASE64, 9.12345678901234567890123456789e+45, "@El5kcJcnkMJ"); + + buffer_flush(wb); + + { + char buf[1024 + 1]; + for(size_t i = 0; i < 1024 ;i++) + buf[i] = (char)(i % 26) + 'A'; + buf[1024] = '\0'; + + buffer_strcat(wb, buf); + errors += buffer_expect(wb, buf); + } + + buffer_flush(wb); + + buffer_json_initialize(wb, "\"", "\"", 0, true, false); + buffer_json_finalize(wb); + errors += buffer_expect(wb, "{\n}\n"); + + buffer_flush(wb); + + buffer_json_initialize(wb, "\"", "\"", 0, true, false); + buffer_json_member_add_string(wb, "hello", "world"); + buffer_json_member_add_string(wb, "alpha", "this: \" is a double quote"); + buffer_json_member_add_object(wb, "object1"); + buffer_json_member_add_string(wb, "hello", "world"); + buffer_json_finalize(wb); + errors += buffer_expect(wb, "{\n \"hello\":\"world\",\n \"alpha\":\"this: \\\" is a double quote\",\n \"object1\":{\n \"hello\":\"world\"\n }\n}\n"); + + buffer_free(wb); + return errors; +} + diff --git a/libnetdata/buffer/buffer.h b/libnetdata/buffer/buffer.h index 0fa3495b4..f5f83bc2a 100644 --- a/libnetdata/buffer/buffer.h +++ b/libnetdata/buffer/buffer.h @@ -3,48 +3,80 @@ #ifndef NETDATA_WEB_BUFFER_H #define NETDATA_WEB_BUFFER_H 1 +#include "../string/utf8.h" #include "../libnetdata.h" #define WEB_DATA_LENGTH_INCREASE_STEP 1024 +#define BUFFER_JSON_MAX_DEPTH 32 // max is 255 + +extern const char hex_digits[16]; +extern const char base64_digits[64]; +extern unsigned char hex_value_from_ascii[256]; +extern unsigned char base64_value_from_ascii[256]; + +typedef enum __attribute__ ((__packed__)) { + BUFFER_JSON_EMPTY = 0, + BUFFER_JSON_OBJECT, + BUFFER_JSON_ARRAY, +} BUFFER_JSON_NODE_TYPE; + +typedef struct web_buffer_json_node { + BUFFER_JSON_NODE_TYPE type; + uint32_t count:24; +} BUFFER_JSON_NODE; + +#define BUFFER_QUOTE_MAX_SIZE 7 + +typedef enum __attribute__ ((__packed__)) { + WB_CONTENT_CACHEABLE = (1 << 0), + WB_CONTENT_NO_CACHEABLE = (1 << 1), +} BUFFER_OPTIONS; + +typedef enum __attribute__ ((__packed__)) { + CT_NONE = 0, + CT_APPLICATION_JSON, + CT_TEXT_PLAIN, + CT_TEXT_HTML, + CT_APPLICATION_X_JAVASCRIPT, + CT_TEXT_CSS, + CT_TEXT_XML, + CT_APPLICATION_XML, + CT_TEXT_XSL, + CT_APPLICATION_OCTET_STREAM, + CT_APPLICATION_X_FONT_TRUETYPE, + CT_APPLICATION_X_FONT_OPENTYPE, + CT_APPLICATION_FONT_WOFF, + CT_APPLICATION_FONT_WOFF2, + CT_APPLICATION_VND_MS_FONTOBJ, + CT_IMAGE_SVG_XML, + CT_IMAGE_PNG, + CT_IMAGE_JPG, + CT_IMAGE_GIF, + CT_IMAGE_XICON, + CT_IMAGE_ICNS, + CT_IMAGE_BMP, + CT_PROMETHEUS, +} HTTP_CONTENT_TYPE; + typedef struct web_buffer { - size_t size; // allocation size of buffer, in bytes - size_t len; // current data length in buffer, in bytes - char *buffer; // the buffer itself - uint8_t contenttype; // the content type of the data in the buffer - uint8_t options; // options related to the content - time_t date; // the timestamp this content has been generated - time_t expires; // the timestamp this content expires + size_t size; // allocation size of buffer, in bytes + size_t len; // current data length in buffer, in bytes + char *buffer; // the buffer itself + HTTP_CONTENT_TYPE content_type; // the content type of the data in the buffer + BUFFER_OPTIONS options; // options related to the content + time_t date; // the timestamp this content has been generated + time_t expires; // the timestamp this content expires size_t *statistics; -} BUFFER; -// options -#define WB_CONTENT_CACHEABLE 1 -#define WB_CONTENT_NO_CACHEABLE 2 - -// content-types -#define CT_APPLICATION_JSON 1 -#define CT_TEXT_PLAIN 2 -#define CT_TEXT_HTML 3 -#define CT_APPLICATION_X_JAVASCRIPT 4 -#define CT_TEXT_CSS 5 -#define CT_TEXT_XML 6 -#define CT_APPLICATION_XML 7 -#define CT_TEXT_XSL 8 -#define CT_APPLICATION_OCTET_STREAM 9 -#define CT_APPLICATION_X_FONT_TRUETYPE 10 -#define CT_APPLICATION_X_FONT_OPENTYPE 11 -#define CT_APPLICATION_FONT_WOFF 12 -#define CT_APPLICATION_FONT_WOFF2 13 -#define CT_APPLICATION_VND_MS_FONTOBJ 14 -#define CT_IMAGE_SVG_XML 15 -#define CT_IMAGE_PNG 16 -#define CT_IMAGE_JPG 17 -#define CT_IMAGE_GIF 18 -#define CT_IMAGE_XICON 19 -#define CT_IMAGE_ICNS 20 -#define CT_IMAGE_BMP 21 -#define CT_PROMETHEUS 22 + struct { + char key_quote[BUFFER_QUOTE_MAX_SIZE + 1]; + char value_quote[BUFFER_QUOTE_MAX_SIZE + 1]; + int8_t depth; + bool minify; + BUFFER_JSON_NODE stack[BUFFER_JSON_MAX_DEPTH]; + } json; +} BUFFER; #define buffer_cacheable(wb) do { (wb)->options |= WB_CONTENT_CACHEABLE; if((wb)->options & WB_CONTENT_NO_CACHEABLE) (wb)->options &= ~WB_CONTENT_NO_CACHEABLE; } while(0) #define buffer_no_cacheable(wb) do { (wb)->options |= WB_CONTENT_NO_CACHEABLE; if((wb)->options & WB_CONTENT_CACHEABLE) (wb)->options &= ~WB_CONTENT_CACHEABLE; (wb)->expires = 0; } while(0) @@ -52,12 +84,34 @@ typedef struct web_buffer { #define buffer_strlen(wb) ((wb)->len) const char *buffer_tostring(BUFFER *wb); -#define buffer_flush(wb) wb->buffer[(wb)->len = 0] = '\0' -void buffer_reset(BUFFER *wb); +#define BUFFER_OVERFLOW_EOF "EOF" + +#ifdef NETDATA_INTERNAL_CHECKS +#define buffer_overflow_check(b) _buffer_overflow_check(b) +#else +#define buffer_overflow_check(b) +#endif + +static inline void _buffer_overflow_check(BUFFER *b) { + assert(b->len <= b->size && + "BUFFER: length is above buffer size."); + + assert(!(b->buffer && (b->buffer[b->size] != '\0' || strcmp(&b->buffer[b->size + 1], BUFFER_OVERFLOW_EOF) != 0)) && + "BUFFER: detected overflow."); +} + +static inline void buffer_flush(BUFFER *wb) { + wb->len = 0; -void buffer_strcat(BUFFER *wb, const char *txt); -void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len); -void buffer_rrd_value(BUFFER *wb, NETDATA_DOUBLE value); + wb->json.depth = 0; + wb->json.stack[0].type = BUFFER_JSON_EMPTY; + wb->json.stack[0].count = 0; + + if(wb->buffer) + wb->buffer[0] = '\0'; +} + +void buffer_reset(BUFFER *wb); void buffer_date(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds); void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds); @@ -69,22 +123,794 @@ void buffer_increase(BUFFER *b, size_t free_size_required); void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...) PRINTFLIKE(3, 4); void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args); void buffer_sprintf(BUFFER *wb, const char *fmt, ...) PRINTFLIKE(2,3); -void buffer_strcat_jsonescape(BUFFER *wb, const char *txt); void buffer_strcat_htmlescape(BUFFER *wb, const char *txt); void buffer_char_replace(BUFFER *wb, char from, char to); -char *print_number_lu_r(char *str, unsigned long uvalue); -char *print_number_llu_r(char *str, unsigned long long uvalue); -char *print_number_llu_r_smart(char *str, unsigned long long uvalue); - -void buffer_print_llu(BUFFER *wb, unsigned long long uvalue); -void buffer_print_ll(BUFFER *wb, long long value); -void buffer_print_llu_hex(BUFFER *wb, unsigned long long value); +void buffer_print_sn_flags(BUFFER *wb, SN_FLAGS flags, bool send_anomaly_bit); static inline void buffer_need_bytes(BUFFER *buffer, size_t needed_free_size) { - if(unlikely(buffer->size - buffer->len < needed_free_size)) - buffer_increase(buffer, needed_free_size); + if(unlikely(buffer->len + needed_free_size >= buffer->size)) + buffer_increase(buffer, needed_free_size + 1); +} + +void buffer_json_initialize(BUFFER *wb, const char *key_quote, const char *value_quote, int depth, + bool add_anonymous_object, bool minify); + +void buffer_json_finalize(BUFFER *wb); + +static inline void _buffer_json_depth_push(BUFFER *wb, BUFFER_JSON_NODE_TYPE type) { +#ifdef NETDATA_INTERNAL_CHECKS + assert(wb->json.depth <= BUFFER_JSON_MAX_DEPTH && "BUFFER JSON: max nesting reached"); +#endif + wb->json.depth++; + wb->json.stack[wb->json.depth].count = 0; + wb->json.stack[wb->json.depth].type = type; +} + +static inline void _buffer_json_depth_pop(BUFFER *wb) { + wb->json.depth--; +} + +static inline void buffer_fast_charcat(BUFFER *wb, const char c) { + + buffer_need_bytes(wb, 2); + *(&wb->buffer[wb->len]) = c; + wb->len += 1; + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_fast_rawcat(BUFFER *wb, const char *txt, size_t len) { + if(unlikely(!txt || !*txt || !len)) return; + + buffer_need_bytes(wb, len + 1); + + const char *t = txt; + const char *e = &txt[len]; + + char *d = &wb->buffer[wb->len]; + + while(t != e) + *d++ = *t++; + + wb->len += len; + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len) { + if(unlikely(!txt || !*txt || !len)) return; + + buffer_need_bytes(wb, len + 1); + + const char *t = txt; + const char *e = &txt[len]; + + char *d = &wb->buffer[wb->len]; + + while(t != e +#ifdef NETDATA_INTERNAL_CHECKS + && *t +#endif + ) + *d++ = *t++; + +#ifdef NETDATA_INTERNAL_CHECKS + assert(!(t != e && !*t) && "BUFFER: source string is shorter than the length given."); +#endif + + wb->len += len; + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_strcat(BUFFER *wb, const char *txt) { + if(unlikely(!txt || !*txt)) return; + + const char *t = txt; + while(*t) { + buffer_need_bytes(wb, 100); + char *s = &wb->buffer[wb->len]; + char *d = s; + const char *e = &wb->buffer[wb->size]; + + while(*t && d < e) + *d++ = *t++; + + wb->len += d - s; + } + + buffer_need_bytes(wb, 1); + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_strncat(BUFFER *wb, const char *txt, size_t len) { + if(unlikely(!txt || !*txt)) return; + + const char *t = txt; + while(*t) { + buffer_need_bytes(wb, len); + char *s = &wb->buffer[wb->len]; + char *d = s; + const char *e = &wb->buffer[wb->len + len]; + + while(*t && d < e) + *d++ = *t++; + + wb->len += d - s; + } + + buffer_need_bytes(wb, 1); + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_json_strcat(BUFFER *wb, const char *txt) { + if(unlikely(!txt || !*txt)) return; + + const unsigned char *t = (const unsigned char *)txt; + while(*t) { + buffer_need_bytes(wb, 110); + unsigned char *s = (unsigned char *)&wb->buffer[wb->len]; + unsigned char *d = s; + const unsigned char *e = (unsigned char *)&wb->buffer[wb->size - 10]; // make room for the max escape sequence + + while(*t && d < e) { +#ifdef BUFFER_JSON_ESCAPE_UTF + if(unlikely(IS_UTF8_STARTBYTE(*t) && IS_UTF8_BYTE(t[1]))) { + // UTF-8 multi-byte encoded character + + // find how big this character is (2-4 bytes) + size_t utf_character_size = 2; + while(utf_character_size < 4 && t[utf_character_size] && IS_UTF8_BYTE(t[utf_character_size]) && !IS_UTF8_STARTBYTE(t[utf_character_size])) + utf_character_size++; + + uint32_t code_point = 0; + for (size_t i = 0; i < utf_character_size; i++) { + code_point <<= 6; + code_point |= (t[i] & 0x3F); + } + + t += utf_character_size; + + // encode as \u escape sequence + *d++ = '\\'; + *d++ = 'u'; + *d++ = hex_digits[(code_point >> 12) & 0xf]; + *d++ = hex_digits[(code_point >> 8) & 0xf]; + *d++ = hex_digits[(code_point >> 4) & 0xf]; + *d++ = hex_digits[code_point & 0xf]; + } + else +#endif + if(unlikely(*t < ' ')) { + uint32_t v = *t++; + *d++ = '\\'; + *d++ = 'u'; + *d++ = hex_digits[(v >> 12) & 0xf]; + *d++ = hex_digits[(v >> 8) & 0xf]; + *d++ = hex_digits[(v >> 4) & 0xf]; + *d++ = hex_digits[v & 0xf]; + } + else { + if (unlikely(*t == '\\' || *t == '\"')) + *d++ = '\\'; + + *d++ = *t++; + } + } + + wb->len += d - s; + } + + buffer_need_bytes(wb, 1); + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_json_quoted_strcat(BUFFER *wb, const char *txt) { + if(unlikely(!txt || !*txt)) return; + + if(*txt == '"') + txt++; + + const char *t = txt; + while(*t) { + buffer_need_bytes(wb, 100); + char *s = &wb->buffer[wb->len]; + char *d = s; + const char *e = &wb->buffer[wb->size - 1]; // remove 1 to make room for the escape character + + while(*t && d < e) { + if(unlikely(*t == '"' && !t[1])) { + t++; + continue; + } + + if(unlikely(*t == '\\' || *t == '"')) + *d++ = '\\'; + + *d++ = *t++; + } + + wb->len += d - s; + } + + buffer_need_bytes(wb, 1); + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +// This trick seems to give an 80% speed increase in 32bit systems +// print_number_llu_r() will just print the digits up to the +// point the remaining value fits in 32 bits, and then calls +// print_number_lu_r() to print the rest with 32 bit arithmetic. + +static inline char *print_uint32_reversed(char *dst, uint32_t value) { + char *d = dst; + do *d++ = (char)('0' + (value % 10)); while((value /= 10)); + return d; +} + +static inline char *print_uint64_reversed(char *dst, uint64_t value) { +#ifdef ENV32BIT + if(value <= (uint64_t)0xffffffff) + return print_uint32_reversed(dst, value); + + char *d = dst; + do *d++ = (char)('0' + (value % 10)); while((value /= 10) && value > (uint64_t)0xffffffff); + if(value) return print_uint32_reversed(d, value); + return d; +#else + char *d = dst; + do *d++ = (char)('0' + (value % 10)); while((value /= 10)); + return d; +#endif +} + +static inline char *print_uint32_hex_reversed(char *dst, uint32_t value) { + static const char *digits = "0123456789ABCDEF"; + char *d = dst; + do *d++ = digits[value & 0xf]; while((value >>= 4)); + return d; +} + +static inline char *print_uint64_hex_reversed(char *dst, uint64_t value) { +#ifdef ENV32BIT + if(value <= (uint64_t)0xffffffff) + return print_uint32_hex_reversed(dst, value); + + char *d = dst; + do *d++ = hex_digits[value & 0xf]; while((value >>= 4) && value > (uint64_t)0xffffffff); + if(value) return print_uint32_hex_reversed(d, value); + return d; +#else + char *d = dst; + do *d++ = hex_digits[value & 0xf]; while((value >>= 4)); + return d; +#endif +} + +static inline char *print_uint64_base64_reversed(char *dst, uint64_t value) { + char *d = dst; + do *d++ = base64_digits[value & 63]; while ((value >>= 6)); + return d; +} + +static inline void char_array_reverse(char *from, char *to) { + // from and to are inclusive + char *begin = from, *end = to, aux; + while (end > begin) aux = *end, *end-- = *begin, *begin++ = aux; +} + +static inline int print_netdata_double(char *dst, NETDATA_DOUBLE value) { + char *s = dst; + + if(unlikely(value < 0)) { + *s++ = '-'; + value = fabsndd(value); + } + + uint64_t fractional_precision = 10000000ULL; // fractional part 7 digits + int fractional_wanted_digits = 7; + int exponent = 0; + if(unlikely(value >= (NETDATA_DOUBLE)(UINT64_MAX / 10))) { + // the number is too big to print using 64bit numbers + // so, let's convert it to exponential notation + exponent = (int)(floorndd(log10ndd(value))); + value /= powndd(10, exponent); + + // the max precision we can support is 18 digits + // (UINT64_MAX is 20, but the first is 1) + fractional_precision = 1000000000000000000ULL; // fractional part 18 digits + fractional_wanted_digits = 18; + } + + char *d = s; + NETDATA_DOUBLE integral_d, fractional_d; + fractional_d = modfndd(value, &integral_d); + + // get the integral and the fractional parts as 64-bit integers + uint64_t integral = (uint64_t)integral_d; + uint64_t fractional = (uint64_t)llrintndd(fractional_d * (NETDATA_DOUBLE)fractional_precision); + if(unlikely(fractional >= fractional_precision)) { + integral++; + fractional -= fractional_precision; + } + + // convert the integral part to string (reversed) + d = print_uint64_reversed(d, integral); + char_array_reverse(s, d - 1); // copy reversed the integral string + + if(likely(fractional != 0)) { + *d++ = '.'; // add the dot + + // convert the fractional part to string (reversed) + d = print_uint64_reversed(s = d, fractional); + + while(d - s < fractional_wanted_digits) *d++ = '0'; // prepend zeros to reach precision + char_array_reverse(s, d - 1); // copy reversed the fractional string + + // remove trailing zeros from the fractional part + while(*(d - 1) == '0') d--; + } + + if(unlikely(exponent != 0)) { + *d++ = 'e'; + *d++ = '+'; + d = print_uint32_reversed(s = d, exponent); + char_array_reverse(s, d - 1); + } + + *d = '\0'; + return (int)(d - dst); +} + +static inline void buffer_print_uint64(BUFFER *wb, uint64_t value) { + buffer_need_bytes(wb, 50); + + char *s = &wb->buffer[wb->len]; + char *d = print_uint64_reversed(s, value); + char_array_reverse(s, d - 1); + *d = '\0'; + wb->len += d - s; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_int64(BUFFER *wb, int64_t value) { + buffer_need_bytes(wb, 50); + + if(value < 0) { + buffer_fast_strcat(wb, "-", 1); + value = -value; + } + + buffer_print_uint64(wb, (uint64_t)value); + + buffer_overflow_check(wb); +} + +static inline void buffer_print_uint64_hex(BUFFER *wb, uint64_t value) { + buffer_need_bytes(wb, sizeof(uint64_t) * 2 + 2 + 1); + + buffer_fast_strcat(wb, HEX_PREFIX, sizeof(HEX_PREFIX) - 1); + + char *s = &wb->buffer[wb->len]; + char *d = print_uint64_hex_reversed(s, value); + char_array_reverse(s, d - 1); + *d = '\0'; + wb->len += d - s; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_uint64_base64(BUFFER *wb, uint64_t value) { + buffer_need_bytes(wb, sizeof(uint64_t) * 2 + 2 + 1); + + buffer_fast_strcat(wb, IEEE754_UINT64_B64_PREFIX, sizeof(IEEE754_UINT64_B64_PREFIX) - 1); + + char *s = &wb->buffer[wb->len]; + char *d = print_uint64_base64_reversed(s, value); + char_array_reverse(s, d - 1); + *d = '\0'; + wb->len += d - s; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_int64_hex(BUFFER *wb, int64_t value) { + buffer_need_bytes(wb, 2); + + if(value < 0) { + buffer_fast_strcat(wb, "-", 1); + value = -value; + } + + buffer_print_uint64_hex(wb, (uint64_t)value); + + buffer_overflow_check(wb); +} + +static inline void buffer_print_int64_base64(BUFFER *wb, int64_t value) { + buffer_need_bytes(wb, 2); + + if(value < 0) { + buffer_fast_strcat(wb, "-", 1); + value = -value; + } + + buffer_print_uint64_base64(wb, (uint64_t)value); + + buffer_overflow_check(wb); +} + +static inline void buffer_print_netdata_double(BUFFER *wb, NETDATA_DOUBLE value) { + buffer_need_bytes(wb, 512 + 2); + + if(isnan(value) || isinf(value)) { + buffer_fast_strcat(wb, "null", 4); + return; + } + else + wb->len += print_netdata_double(&wb->buffer[wb->len], value); + + // terminate it + buffer_need_bytes(wb, 1); + wb->buffer[wb->len] = '\0'; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_netdata_double_hex(BUFFER *wb, NETDATA_DOUBLE value) { + buffer_need_bytes(wb, sizeof(uint64_t) * 2 + 2 + 1 + 1); + + uint64_t *ptr = (uint64_t *) (&value); + buffer_fast_strcat(wb, IEEE754_DOUBLE_HEX_PREFIX, sizeof(IEEE754_DOUBLE_HEX_PREFIX) - 1); + + char *s = &wb->buffer[wb->len]; + char *d = print_uint64_hex_reversed(s, *ptr); + char_array_reverse(s, d - 1); + *d = '\0'; + wb->len += d - s; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_netdata_double_base64(BUFFER *wb, NETDATA_DOUBLE value) { + buffer_need_bytes(wb, sizeof(uint64_t) * 2 + 2 + 1 + 1); + + uint64_t *ptr = (uint64_t *) (&value); + buffer_fast_strcat(wb, IEEE754_DOUBLE_B64_PREFIX, sizeof(IEEE754_DOUBLE_B64_PREFIX) - 1); + + char *s = &wb->buffer[wb->len]; + char *d = print_uint64_base64_reversed(s, *ptr); + char_array_reverse(s, d - 1); + *d = '\0'; + wb->len += d - s; + + buffer_overflow_check(wb); +} + +typedef enum { + NUMBER_ENCODING_DECIMAL, + NUMBER_ENCODING_HEX, + NUMBER_ENCODING_BASE64, +} NUMBER_ENCODING; + +static inline void buffer_print_int64_encoded(BUFFER *wb, NUMBER_ENCODING encoding, int64_t value) { + if(encoding == NUMBER_ENCODING_BASE64) + return buffer_print_int64_base64(wb, value); + + if(encoding == NUMBER_ENCODING_HEX) + return buffer_print_int64_hex(wb, value); + + return buffer_print_int64(wb, value); +} + +static inline void buffer_print_uint64_encoded(BUFFER *wb, NUMBER_ENCODING encoding, uint64_t value) { + if(encoding == NUMBER_ENCODING_BASE64) + return buffer_print_uint64_base64(wb, value); + + if(encoding == NUMBER_ENCODING_HEX) + return buffer_print_uint64_hex(wb, value); + + return buffer_print_uint64(wb, value); +} + +static inline void buffer_print_netdata_double_encoded(BUFFER *wb, NUMBER_ENCODING encoding, NETDATA_DOUBLE value) { + if(encoding == NUMBER_ENCODING_BASE64) + return buffer_print_netdata_double_base64(wb, value); + + if(encoding == NUMBER_ENCODING_HEX) + return buffer_print_netdata_double_hex(wb, value); + + return buffer_print_netdata_double(wb, value); +} + +static inline void buffer_print_spaces(BUFFER *wb, size_t spaces) { + buffer_need_bytes(wb, spaces * 4 + 1); + + char *d = &wb->buffer[wb->len]; + for(size_t i = 0; i < spaces; i++) { + *d++ = ' '; + *d++ = ' '; + *d++ = ' '; + *d++ = ' '; + } + + *d = '\0'; + wb->len += spaces * 4; + + buffer_overflow_check(wb); +} + +static inline void buffer_print_json_comma_newline_spacing(BUFFER *wb) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + if(wb->json.minify) + return; + + buffer_fast_strcat(wb, "\n", 1); + buffer_print_spaces(wb, wb->json.depth + 1); +} + +static inline void buffer_print_json_key(BUFFER *wb, const char *key) { + buffer_strcat(wb, wb->json.key_quote); + buffer_json_strcat(wb, key); + buffer_strcat(wb, wb->json.key_quote); +} + +static inline void buffer_json_add_string_value(BUFFER *wb, const char *value) { + if(value) { + buffer_strcat(wb, wb->json.value_quote); + buffer_json_strcat(wb, value); + buffer_strcat(wb, wb->json.value_quote); + } + else + buffer_fast_strcat(wb, "null", 4); +} + +static inline void buffer_json_add_quoted_string_value(BUFFER *wb, const char *value) { + if(value) { + buffer_strcat(wb, wb->json.value_quote); + buffer_json_quoted_strcat(wb, value); + buffer_strcat(wb, wb->json.value_quote); + } + else + buffer_fast_strcat(wb, "null", 4); +} + +static inline void buffer_json_member_add_object(BUFFER *wb, const char *key) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":{", 2); + wb->json.stack[wb->json.depth].count++; + + _buffer_json_depth_push(wb, BUFFER_JSON_OBJECT); +} + +static inline void buffer_json_object_close(BUFFER *wb) { +#ifdef NETDATA_INTERNAL_CHECKS + assert(wb->json.depth >= 0 && "BUFFER JSON: nothing is open to close it"); + assert(wb->json.stack[wb->json.depth].type == BUFFER_JSON_OBJECT && "BUFFER JSON: an object is not open to close it"); +#endif + if(!wb->json.minify) { + buffer_fast_strcat(wb, "\n", 1); + buffer_print_spaces(wb, wb->json.depth); + } + buffer_fast_strcat(wb, "}", 1); + _buffer_json_depth_pop(wb); +} + +static inline void buffer_json_member_add_string(BUFFER *wb, const char *key, const char *value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_json_add_string_value(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_string_or_omit(BUFFER *wb, const char *key, const char *value) { + if(value && *value) + buffer_json_member_add_string(wb, key, value); +} + +static inline void buffer_json_member_add_string_or_empty(BUFFER *wb, const char *key, const char *value) { + if(!value) + value = ""; + + buffer_json_member_add_string(wb, key, value); +} + +static inline void buffer_json_member_add_quoted_string(BUFFER *wb, const char *key, const char *value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + + if(!value || strcmp(value, "null") == 0) + buffer_fast_strcat(wb, "null", 4); + else + buffer_json_add_quoted_string_value(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_uuid(BUFFER *wb, const char *key, uuid_t *value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + + if(value) { + char uuid[GUID_LEN + 1]; + uuid_unparse_lower(*value, uuid); + buffer_json_add_string_value(wb, uuid); + } + else + buffer_json_add_string_value(wb, NULL); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_boolean(BUFFER *wb, const char *key, bool value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_strcat(wb, value?"true":"false"); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_array(BUFFER *wb, const char *key) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":[", 2); + wb->json.stack[wb->json.depth].count++; + + _buffer_json_depth_push(wb, BUFFER_JSON_ARRAY); +} + +static inline void buffer_json_add_array_item_array(BUFFER *wb) { + buffer_print_json_comma_newline_spacing(wb); + + buffer_fast_strcat(wb, "[", 1); + wb->json.stack[wb->json.depth].count++; + + _buffer_json_depth_push(wb, BUFFER_JSON_ARRAY); +} + +static inline void buffer_json_add_array_item_string(BUFFER *wb, const char *value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_json_add_string_value(wb, value); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_double(BUFFER *wb, NETDATA_DOUBLE value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_netdata_double(wb, value); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_int64(BUFFER *wb, int64_t value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_int64(wb, value); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_uint64(BUFFER *wb, uint64_t value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_uint64(wb, value); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_time_t(BUFFER *wb, time_t value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_int64(wb, value); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_time_ms(BUFFER *wb, time_t value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_int64(wb, value); + buffer_fast_strcat(wb, "000", 3); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_time_t2ms(BUFFER *wb, time_t value) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_print_int64(wb, value); + buffer_fast_strcat(wb, "000", 3); + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_add_array_item_object(BUFFER *wb) { + if(wb->json.stack[wb->json.depth].count) + buffer_fast_strcat(wb, ",", 1); + + buffer_fast_strcat(wb, "{", 1); + wb->json.stack[wb->json.depth].count++; + + _buffer_json_depth_push(wb, BUFFER_JSON_OBJECT); +} + +static inline void buffer_json_member_add_time_t(BUFFER *wb, const char *key, time_t value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_print_int64(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_time_t2ms(BUFFER *wb, const char *key, time_t value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_print_int64(wb, value); + buffer_fast_strcat(wb, "000", 3); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_uint64(BUFFER *wb, const char *key, uint64_t value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_print_uint64(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_int64(BUFFER *wb, const char *key, int64_t value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_print_int64(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_member_add_double(BUFFER *wb, const char *key, NETDATA_DOUBLE value) { + buffer_print_json_comma_newline_spacing(wb); + buffer_print_json_key(wb, key); + buffer_fast_strcat(wb, ":", 1); + buffer_print_netdata_double(wb, value); + + wb->json.stack[wb->json.depth].count++; +} + +static inline void buffer_json_array_close(BUFFER *wb) { +#ifdef NETDATA_INTERNAL_CHECKS + assert(wb->json.depth >= 0 && "BUFFER JSON: nothing is open to close it"); + assert(wb->json.stack[wb->json.depth].type == BUFFER_JSON_ARRAY && "BUFFER JSON: an array is not open to close it"); +#endif + buffer_fast_strcat(wb, "]", 1); + _buffer_json_depth_pop(wb); } #endif /* NETDATA_WEB_BUFFER_H */ -- cgit v1.2.3