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#pragma once
#include <util/generic/strbuf.h>
namespace NMonitoring {
namespace NFormatContenType {
constexpr TStringBuf TEXT = "application/x-solomon-txt";
constexpr TStringBuf JSON = "application/json";
constexpr TStringBuf PROTOBUF = "application/x-solomon-pb";
constexpr TStringBuf SPACK = "application/x-solomon-spack";
constexpr TStringBuf PROMETHEUS = "text/plain";
constexpr TStringBuf UNISTAT = "text/json";
}
namespace NFormatContentEncoding {
constexpr TStringBuf IDENTITY = "identity";
constexpr TStringBuf ZLIB = "zlib";
constexpr TStringBuf LZ4 = "lz4";
constexpr TStringBuf ZSTD = "zstd";
}
/**
* Defines format types for metric encoders.
*/
enum class EFormat {
/**
* Special case when it was not possible to determine format.
*/
UNKNOWN,
/**
* Read more https://wiki.yandex-team.ru/solomon/api/dataformat/spackv1
*/
SPACK,
/**
* Read more https://wiki.yandex-team.ru/solomon/api/dataformat/json
*/
JSON,
/**
* Simple protobuf format, only for testing purposes.
*/
PROTOBUF,
/**
* Simple text representation, only for debug purposes.
*/
TEXT,
/**
* Prometheus text-based format
*/
PROMETHEUS,
};
/**
* Defines compression algorithms for metric encoders.
*/
enum class ECompression {
/**
* Special case when it was not possible to determine compression.
*/
UNKNOWN,
/**
* Means no compression.
*/
IDENTITY,
/**
* Using the zlib structure (defined in RFC 1950), with the
* deflate compression algorithm and Adler32 checkums.
*/
ZLIB,
/**
* Using LZ4 compression algorithm (read http://lz4.org for more info)
* with XxHash32 checksums.
*/
LZ4,
/**
* Using Zstandard compression algorithm (read http://zstd.net for more
* info) with XxHash32 checksums.
*/
ZSTD,
};
enum class EMetricsMergingMode {
/**
* Do not merge metric batches. If several points of the same metric were
* added multiple times accross different writes, paste them as
* separate metrics.
*
* Example:
* COUNTER [(ts1, val1)] | COUNTER [(ts1, val1)]
* COUNTER [(ts2, val2)] | --> COUNTER [(ts2, val2)]
* COUNTER [(ts3, val3)] | COUNTER [(ts3, val3)]
*/
DEFAULT,
/**
* If several points of the same metric were added multiple times across
* different writes, merge all values to one timeseries.
*
* Example:
* COUNTER [(ts1, val1)] |
* COUNTER [(ts2, val2)] | --> COUNTER [(ts1, val1), (ts2, val2), (ts3, val3)]
* COUNTER [(ts3, val3)] |
*/
MERGE_METRICS,
};
/**
* Matches serialization format by the given "Accept" header value.
*
* @param value value of the "Accept" header.
* @return most preffered serialization format type
*/
EFormat FormatFromAcceptHeader(TStringBuf value);
/**
* Matches serialization format by the given "Content-Type" header value
*
* @param value value of the "Content-Type" header
* @return message format
*/
EFormat FormatFromContentType(TStringBuf value);
/**
* Returns value for "Content-Type" header determined by the given
* format type.
*
* @param format serialization format type
* @return mime-type indentificator
* or empty string if format is UNKNOWN
*/
TStringBuf ContentTypeByFormat(EFormat format);
/**
* Matches compression algorithm by the given "Accept-Encoding" header value.
*
* @param value value of the "Accept-Encoding" header.
* @return most preffered compression algorithm
*/
ECompression CompressionFromAcceptEncodingHeader(TStringBuf value);
/**
* Matches compression algorithm by the given "Content-Encoding" header value.
*
* @param value value of the "Accept-Encoding" header.
* @return most preffered compression algorithm
*/
ECompression CompressionFromContentEncodingHeader(TStringBuf value);
/**
* Returns value for "Content-Encoding" header determined by the given
* compression algorithm.
*
* @param compression encoding compression alg
* @return media-type compresion algorithm
* or empty string if compression is UNKNOWN
*/
TStringBuf ContentEncodingByCompression(ECompression compression);
}
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