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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,4 @@ | ||
| export { MetricsConfig, MetricsListener } from "./listener"; | ||
| export { MetricsQueue } from "./queue"; | ||
| export { KMSService } from "./kms-service"; | ||
| export { incrementErrorsMetric, incrementInvocationsMetric } from "./enhanced-metrics"; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| import { LogLevel, logDebug, setLogLevel, setLogger } from "../utils"; | ||
| import { METRICS_QUEUE_LIMIT, MetricsQueue } from "./queue"; | ||
|
|
||
| describe("MetricsQueue", () => { | ||
| const logger = { | ||
| debug: jest.fn(), | ||
| error: jest.fn(), | ||
| warn: jest.fn(), | ||
| }; | ||
| describe("push", () => { | ||
| beforeEach(() => { | ||
| setLogLevel(LogLevel.NONE); | ||
| setLogger(logger); | ||
| }); | ||
| it("resets metrics queue when its full", () => { | ||
| setLogLevel(LogLevel.WARNING); | ||
| const queue = new MetricsQueue(); | ||
| for (let i = 0; i < METRICS_QUEUE_LIMIT + 1; i++) { | ||
| queue.push({ name: "metric", tags: [], value: i }); | ||
| } | ||
|
|
||
| // The queue should have been reset and only contain the last metric | ||
| expect(queue.length).toBe(1); | ||
| expect(logger.warn).toHaveBeenLastCalledWith( | ||
| '{"status":"warning","message":"datadog:Metrics queue is full, dropping all metrics."}', | ||
| ); | ||
| }); | ||
|
|
||
| it("enqueue metric", () => { | ||
| setLogLevel(LogLevel.DEBUG); | ||
| const queue = new MetricsQueue(); | ||
| queue.push({ name: "metric", tags: [], value: 1 }); | ||
| expect(queue.length).toBe(1); | ||
| expect(logger.debug).toHaveBeenLastCalledWith( | ||
| '{"status":"debug","message":"datadog:Metrics Listener was not initialized. Enqueuing metric for later processing."}', | ||
| ); | ||
| }); | ||
| }); | ||
|
|
||
| describe("pop", () => { | ||
| it("returns undefined when queue is empty", () => { | ||
| const queue = new MetricsQueue(); | ||
| expect(queue.pop()).toBeUndefined(); | ||
| }); | ||
|
|
||
| it("returns the first element in the queue", () => { | ||
| const queue = new MetricsQueue(); | ||
| queue.push({ name: "metric", tags: [], value: 1 }); | ||
| queue.push({ name: "metric", tags: [], value: 2 }); | ||
| expect(queue.pop()).toEqual({ name: "metric", tags: [], value: 2 }); | ||
| }); | ||
| }); | ||
|
|
||
| it("reverses the queue", () => { | ||
| const queue = new MetricsQueue(); | ||
| queue.push({ name: "metric", tags: [], value: 1 }); | ||
| queue.push({ name: "metric", tags: [], value: 2 }); | ||
| queue.reverse(); | ||
| expect(queue.pop()).toEqual({ name: "metric", tags: [], value: 1 }); | ||
| }); | ||
|
|
||
| it("resets the queue", () => { | ||
| const queue = new MetricsQueue(); | ||
| queue.push({ name: "metric", tags: [], value: 1 }); | ||
| queue.push({ name: "metric", tags: [], value: 2 }); | ||
| queue.reset(); | ||
| expect(queue.length).toBe(0); | ||
| }); | ||
|
|
||
| it("returns the length of the queue", () => { | ||
| const queue = new MetricsQueue(); | ||
| queue.push({ name: "metric", tags: [], value: 1 }); | ||
| queue.push({ name: "metric", tags: [], value: 2 }); | ||
| expect(queue.length).toBe(2); | ||
| }); | ||
| }); |
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