Struct seella::Event

pub struct Event {
    pub id: Uuid,
    pub session_id: Uuid,
    pub activity: String,
    pub source: IpAddr,
    pub duration: Duration,
    pub thread: String,
    pub span_id: SpanId,
    pub parent_span_id: SpanId,
    /* private fields */
}

All of the information related to an event, as well as all child events.

Fields

id: Uuid

The UUID of the Event

session_id: Uuid

The UUID of the Session

activity: String

What is being done in this Event

source: IpAddr

The source IP for this Event

duration: Duration

Duration of this only this Event, not including child events

thread: String

The name of the thread from which this Event originated

span_id: SpanId

Unique identifier for this Event’s span Not present in Cassandra

parent_span_id: SpanId

Span ID for this Event’s parent. Used to identity the tree structure Not present in Cassandra

Implementations

impl Event

pub fn activity_length(&self) -> usize

The length of the string in Event::activity.

Used for nicer formatting.

pub fn durations(&self) -> (i64, i64)

Return the total duration of this span and it’s children, and the duration of just this span.

First field is the total, second field is just this span.

pub fn sum_of_child_durations(&self) -> i64

Returns the total sum of all children’s durations.

pub fn waterfall( &self, config: &Cli, offset: i64, session_duration: i64 ) -> String

Generate a waterfall chart from the trace data.

The intention of this is to show the proportion of the total trace taken up by this span, and where it lies relative to the start and end of the span.

This is in the format of:

[  <blank spaces>  █████<duration of the span>█████───<duration of child spans>───┤   <blank spaces>   ]

offset is the time in microseconds since the start of the trace to this span. session_duration is the total duration of the session.

pub fn display( &self, config: &Cli, min_activity_width: usize, depth: usize, max_depth: usize ) -> String

Generates a texttual representation of the event to display alongside the waterfall view.

This contains, by default, the span duration, source node IP, and the activity:

    0 10.17.145.76    Querying is done

This can be extended with the config to include the event id, the local and parent span IDs, and the thread name:

    0 10.17.145.76    Querying is done     3d07a953-313e-11ee-95bc-69d50677a8c4 75964065742287       191362128677         shard 2

Trait Implementations

impl Debug for Event

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<EventRecord> for Event

fn from(value: EventRecord) -> Self

Converts to this type from the input type.