gesha-core 0.0.12

Core functionality for Gesha project
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91

use crate::trace::stdout_layer;

use opentelemetry::trace::TracerProvider;
use opentelemetry_otlp::WithExportConfig;
use opentelemetry_sdk::Resource;
use opentelemetry_sdk::trace::{BatchConfigBuilder, BatchSpanProcessor, SdkTracerProvider};
use std::fs::File;
use tracing::Subscriber;
use tracing::metadata::LevelFilter;
use tracing_subscriber::filter::filter_fn;
use tracing_subscriber::fmt::layer;
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::registry::LookupSpan;
use tracing_subscriber::util::SubscriberInitExt;
use tracing_subscriber::{EnvFilter, Layer, Registry};

pub fn init() {
    Registry::default()
        .with(stdout_layer())
        .with(trace_layer())
        .with(file_log_layer())
        .with(otel_layer())
        .init();
}

fn trace_layer<S>() -> impl Layer<S>
where
    S: Subscriber + for<'a> LookupSpan<'a>,
{
    let otel_collector_endpoint = "http://localhost:4317";
    let exporter = opentelemetry_otlp::SpanExporter::builder()
        .with_tonic()
        .with_endpoint(otel_collector_endpoint)
        .build()
        .unwrap();

    let batch_config = BatchConfigBuilder::default()
        .with_scheduled_delay(crate::trace::duration())
        .build();

    let batch_processor = BatchSpanProcessor::builder(exporter)
        .with_batch_config(batch_config)
        .build();

    let service_name = "gesha-verify";
    let provider = SdkTracerProvider::builder()
        .with_span_processor(batch_processor)
        .with_resource(Resource::builder().with_service_name(service_name).build())
        .build();

    let otel_scope_name = "gesha-verify";
    let tracer = provider.tracer(otel_scope_name);

    tracing_opentelemetry::layer()
        .with_tracer(tracer)
        .with_filter(LevelFilter::INFO)
        .with_filter(crate::trace::filter_non_otel())
}

fn file_log_layer<S>() -> Option<impl Layer<S>>
where
    S: Subscriber + for<'a> LookupSpan<'a>,
{
    let env_filter = EnvFilter::builder()
        .with_default_directive("gesha=debug".parse().unwrap())
        .from_env_lossy();

    let file_path = "./logs/gesha-verify.log";
    let file = File::create(file_path).expect("unable to create log file");
    let layer = layer()
        .pretty()
        .with_writer(file)
        .with_filter(env_filter)
        .with_filter(crate::trace::filter_non_otel());

    Some(layer)
}

// https://github.com/open-telemetry/opentelemetry-rust/pull/2260
fn otel_layer<S>() -> Option<impl Layer<S>>
where
    S: Subscriber + for<'a> LookupSpan<'a>,
{
    let file_path = "./logs/opentelemetry.log";
    let file = File::create(file_path).expect("unable to create log file");
    let layer = layer().with_writer(file).with_filter(filter_fn(|metadata| {
        metadata.target().starts_with("opentelemetry")
    }));

    Some(layer)
}