package rs.devtools.common

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A message representing a key-value pair of data associated with a `Span`

Used in: logs.LogEvent, spans.SpanEvent.Recorded, spans.SpanEvent.Span

• string name = 1

  The key of the key-value pair. This is either represented as a string, or as an index into a `Metadata`'s array of field name strings.

• oneof value

  The value of the key-value pair.

  • string debug_val = 2

    A value serialized to a string using `fmt::Debug`.

  • string str_val = 3

    A string value.

  • uint64 u64_val = 4

    An unsigned integer value.

  • sint64 i64_val = 5

    A signed integer value.

  • bool bool_val = 6

    A boolean value.

  • double double_val = 7

    A double (f64) value.

• uint64 metadata_id = 8

  Metadata for the task span that the field came from.

A Rust source code location.

Used in: Metadata

• optional string file = 1

  The file path

• optional string module_path = 2

  The Rust module path

• optional uint32 line = 3

  The line number in the source code file.

• optional uint32 column = 4

  The character in `line`.

Metadata associated with an event of span.

Used in: NewMetadata

• string name = 1

  The name of the span or event.

• string target = 2

  Describes the part of the system where the span or event that this metadata describes occurred.

• optional Location location = 3

  The Rust source location associated with the span or event.

• Metadata.Kind kind = 4

  Indicates whether metadata is associated with a span or with an event.

• Metadata.Level level = 5

  Describes the level of verbosity of a span or event.

• repeated string field_names = 6

  The names of the key-value fields attached to the span or event this metadata is associated with.

Indicates whether metadata is associated with a span or with an event.

Used in: Metadata

• SPAN = 0

  Indicates metadata is associated with a span.

• EVENT = 1

  Indicates metadata is associated with an event.

Describes the level of verbosity of a span or event. Corresponds to `Level` in the `tracing` crate.

Used in: Metadata, instrument.Filter

• ERROR = 0

  The "error" level. Designates very serious errors.

• WARN = 1

  The "warn" level. Designates hazardous situations.

• INFO = 2

  The "info" level. Designates useful information.

• DEBUG = 3

  The "debug" level. Designates lower priority information.

• TRACE = 4

  The "trace" level. Designates very low priority, often extremely verbose, information.

One metadata element registered since the last update.

Used in: instrument.Update

• optional uint64 id = 1

  Unique identifier for `metadata`.

• optional Metadata metadata = 2

  The metadata payload.