otlp2records 0.8.2

Transform OTLP telemetry to flattened records
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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

//! OTLP log JSON decoding into protobuf request structs.

use opentelemetry_proto::tonic::{
    collector::logs::v1::ExportLogsServiceRequest,
    logs::v1::{LogRecord, ResourceLogs, ScopeLogs},
};
use serde::Deserialize;

use super::common::{
    decode_bytes_field, json_any_value_to_otlp, json_attrs_to_otlp, json_resource_to_otlp,
    json_scope_to_otlp, json_timestamp_to_u64, DecodeError, JsonAnyValue, JsonInstrumentationScope,
    JsonKeyValue, JsonNumberOrString, JsonResource,
};

pub fn decode_json_request(body: &[u8]) -> Result<ExportLogsServiceRequest, DecodeError> {
    let normalized = super::normalize::normalize_json_bytes(body)?;
    let request: JsonExportLogsServiceRequest = serde_json::from_slice(&normalized)?;
    export_logs_json_to_request(request)
}

fn export_logs_json_to_request(
    request: JsonExportLogsServiceRequest,
) -> Result<ExportLogsServiceRequest, DecodeError> {
    let mut resource_logs = Vec::with_capacity(request.resource_logs.len());

    for resource in request.resource_logs {
        let mut scope_logs = Vec::with_capacity(resource.scope_logs.len());
        for scope in resource.scope_logs {
            let mut log_records = Vec::with_capacity(scope.log_records.len());
            for record in scope.log_records {
                log_records.push(LogRecord {
                    time_unix_nano: json_timestamp_to_u64(
                        &record.time_unix_nano,
                        "log.time_unix_nano",
                    )?,
                    observed_time_unix_nano: json_timestamp_to_u64(
                        &record.observed_time_unix_nano,
                        "log.observed_time_unix_nano",
                    )?,
                    severity_number: record.severity_number,
                    severity_text: record.severity_text,
                    body: record.body.map(json_any_value_to_otlp),
                    attributes: json_attrs_to_otlp(record.attributes),
                    dropped_attributes_count: 0,
                    flags: 0,
                    trace_id: decode_bytes_field(&record.trace_id),
                    span_id: decode_bytes_field(&record.span_id),
                    event_name: record.event_name,
                });
            }
            scope_logs.push(ScopeLogs {
                scope: Some(json_scope_to_otlp(scope.scope)),
                log_records,
                schema_url: String::new(),
            });
        }
        resource_logs.push(ResourceLogs {
            resource: Some(json_resource_to_otlp(resource.resource)),
            scope_logs,
            schema_url: String::new(),
        });
    }

    Ok(ExportLogsServiceRequest { resource_logs })
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct JsonExportLogsServiceRequest {
    #[serde(default)]
    resource_logs: Vec<JsonResourceLogs>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct JsonResourceLogs {
    #[serde(default)]
    resource: JsonResource,
    #[serde(default)]
    scope_logs: Vec<JsonScopeLogs>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct JsonScopeLogs {
    #[serde(default)]
    scope: JsonInstrumentationScope,
    #[serde(default)]
    log_records: Vec<JsonLogRecord>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
struct JsonLogRecord {
    #[serde(default)]
    time_unix_nano: JsonNumberOrString,
    #[serde(default)]
    observed_time_unix_nano: JsonNumberOrString,
    #[serde(default)]
    severity_number: i32,
    #[serde(default)]
    severity_text: String,
    #[serde(default)]
    body: Option<JsonAnyValue>,
    #[serde(default)]
    attributes: Vec<JsonKeyValue>,
    #[serde(default)]
    trace_id: String,
    #[serde(default)]
    span_id: String,
    #[serde(default)]
    event_name: String,
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn decodes_json_request() {
        let body = r#"{
            "resourceLogs": [{
                "resource": { "attributes": [{ "key": "service.name", "value": { "stringValue": "svc" } }]},
                "scopeLogs": [{
                    "scope": { "name": "lib", "version": "1" },
                    "logRecords": [{
                        "timeUnixNano": "123",
                        "observedTimeUnixNano": "124",
                        "severityNumber": 9,
                        "severityText": "INFO",
                        "body": { "stringValue": "hello" },
                        "attributes": [{ "key": "k", "value": { "stringValue": "v" } }],
                        "traceId": "0af7651916cd43dd8448eb211c80319c",
                        "spanId": "b7ad6b7169203331",
                        "eventName": "login"
                    }]
                }]
            }]
        }"#;

        let request = decode_json_request(body.as_bytes()).unwrap();
        let record = &request.resource_logs[0].scope_logs[0].log_records[0];
        assert_eq!(record.severity_number, 9);
        assert_eq!(record.trace_id.len(), 16);
        assert_eq!(record.event_name, "login");
    }
}