Files
clean-architecture-frontend…/src/contracts/telemetry.js
T

146 lines
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JavaScript

export const TELEMETRY_ATTRIBUTE_ALLOWLIST = Object.freeze([
"app_version",
"build_id",
"release_id",
"config_schema_version",
"api_contract_version",
"route_id",
"operation_id",
"error_kind",
"http_status_group",
"attempt_count_bucket",
"duration_bucket",
"component_boundary",
"active_release_id",
"mismatch_kind",
"reason",
"queue_size_bucket",
]);
export const TELEMETRY_FORBIDDEN_ATTRIBUTES = Object.freeze([
"access_token",
"refresh_token",
"authorization_header",
"cookie",
"email",
"user_name",
"raw_user_id",
"raw_url",
"query_string",
"request_body",
"response_body",
"storage_value",
"stack_in_user_message",
]);
/**
* @typedef {{
* eventName: string,
* trigger: string,
* requiredAttributes: readonly string[],
* optionalAttributes: readonly string[],
* forbiddenAttributes: readonly string[],
* sampling: string,
* delivery: string
* }} TelemetryDefinition
*/
/**
* @param {string} eventName
* @param {string} trigger
* @param {string[]} requiredAttributes
* @param {string[]} [optionalAttributes]
* @param {string} [sampling]
* @returns {Readonly<TelemetryDefinition>}
*/
const event = (
eventName,
trigger,
requiredAttributes,
optionalAttributes = [],
sampling = "all",
) =>
Object.freeze({
eventName,
trigger,
requiredAttributes: Object.freeze(requiredAttributes),
optionalAttributes: Object.freeze(optionalAttributes),
forbiddenAttributes: TELEMETRY_FORBIDDEN_ATTRIBUTES,
sampling,
delivery: "best-effort",
});
export const TELEMETRY_REGISTRY = Object.freeze({
"app.boot.failed": event("app.boot.failed", "boot validation failure", [
"error_kind",
"build_id",
"config_schema_version",
]),
"api.request.failed": event("api.request.failed", "terminal API failure", [
"error_kind",
"http_status_group",
"attempt_count_bucket",
"route_id",
]),
"ui.render.failed": event("ui.render.failed", "React boundary catch", [
"route_id",
"build_id",
"component_boundary",
]),
"release.mismatch.detected": event(
"release.mismatch.detected",
"release tuple mismatch",
["build_id", "active_release_id", "mismatch_kind"],
),
"telemetry.delivery.dropped": event(
"telemetry.delivery.dropped",
"queue or sink failure",
["reason", "queue_size_bucket"],
[],
"internal-counter",
),
});
/**
* @param {string} eventName
* @param {Record<string, unknown>} attributes
*/
export function projectTelemetryEvent(eventName, attributes) {
const registry =
/** @type {Record<string, (typeof TELEMETRY_REGISTRY)[keyof typeof TELEMETRY_REGISTRY]>} */ (
TELEMETRY_REGISTRY
);
const definition = registry[eventName];
if (!definition) {
return {
success: /** @type {false} */ (false),
reason: "unregistered-event",
};
}
const projected = Object.fromEntries(
Object.entries(attributes).filter(
([key]) =>
TELEMETRY_ATTRIBUTE_ALLOWLIST.includes(key) &&
!TELEMETRY_FORBIDDEN_ATTRIBUTES.includes(key),
),
);
const missing = definition.requiredAttributes.filter(
(key) => projected[key] === undefined,
);
if (missing.length > 0) {
return {
success: /** @type {false} */ (false),
reason: "missing-required-attributes",
};
}
return {
success: /** @type {true} */ (true),
event: Object.freeze({
eventName,
attributes: Object.freeze(projected),
}),
};
}