xk6-frostfs/scenarios/verify.js

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import native from 'k6/x/frostfs/native';
import registry from 'k6/x/frostfs/registry';
import s3 from 'k6/x/frostfs/s3';
import logging from 'k6/x/frostfs/logging';
import { sleep } from 'k6';
import { Counter } from 'k6/metrics';
import { textSummary } from './libs/k6-summary-0.0.2.js';
import { parseEnv } from './libs/env-parser.js';
parseEnv();
const obj_registry = registry.open(__ENV.REGISTRY_FILE);
// Time limit (in seconds) for the run
const time_limit = __ENV.TIME_LIMIT || "60";
const summary_json = __ENV.SUMMARY_JSON || "/tmp/summary.json";
// Number of objects in each status. These counters are cumulative in a
// sense that they reflect total number of objects in the registry, not just
// number of objects that were processed by specific run of this scenario.
// This allows to run this scenario multiple times and collect overall
// statistics in the final run.
const obj_counters = {
verified: new Counter('verified_obj'),
skipped: new Counter('skipped_obj'),
invalid: new Counter('invalid_obj'),
};
let log = logging.new();
// Connect to random gRPC endpoint
let grpc_client = undefined;
if (__ENV.GRPC_ENDPOINTS) {
const grpcEndpoints = __ENV.GRPC_ENDPOINTS.split(',');
const grpcEndpoint = grpcEndpoints[Math.floor(Math.random() * grpcEndpoints.length)];
log = log.withField("endpoint", grpcEndpoint);
grpc_client = native.connect(grpcEndpoint, '', __ENV.DIAL_TIMEOUT ? parseInt(__ENV.DIAL_TIMEOUT) : 0, __ENV.STREAM_TIMEOUT ? parseInt(__ENV.STREAM_TIMEOUT) : 0);
}
// Connect to random S3 endpoint
let s3_client = undefined;
if (__ENV.S3_ENDPOINTS) {
const s3_endpoints = __ENV.S3_ENDPOINTS.split(',');
const s3_endpoint = s3_endpoints[Math.floor(Math.random() * s3_endpoints.length)];
log = log.withField("endpoint", s3_endpoint);
s3_client = s3.connect(`http://${s3_endpoint}`);
}
// We will attempt to verify every object in "created" status. The scenario will execute
// as many iterations as there are objects. Each object will have 3 retries to be verified
const obj_to_verify_selector = registry.getSelector(
__ENV.REGISTRY_FILE,
"obj_to_verify",
__ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
{
status: "created",
}
);
const obj_to_verify_count = obj_to_verify_selector.count();
// Execute at least one iteration (executor shared-iterations can't run 0 iterations)
const iterations = Math.max(1, obj_to_verify_count);
// Executor shared-iterations requires number of iterations to be larger than number of VUs
const vus = Math.min(__ENV.CLIENTS, iterations);
const scenarios = {
verify: {
executor: 'shared-iterations',
vus,
iterations,
maxDuration: `${time_limit}s`,
exec: 'obj_verify',
gracefulStop: '5s',
}
};
export const options = {
scenarios,
setupTimeout: '5s',
};
export function setup() {
// Populate counters with initial values
for (const [status, counter] of Object.entries(obj_counters)) {
const obj_selector = registry.getSelector(
__ENV.REGISTRY_FILE,
status,
__ENV.SELECTION_SIZE ? parseInt(__ENV.SELECTION_SIZE) : 0,
{ status });
counter.add(obj_selector.count());
}
}
export function handleSummary(data) {
return {
'stdout': textSummary(data, { indent: ' ', enableColors: false }),
[summary_json]: JSON.stringify(data),
};
}
export function obj_verify() {
if (obj_to_verify_count == 0) {
log.info("Nothing to verify");
return;
}
if (__ENV.SLEEP) {
sleep(__ENV.SLEEP);
}
const obj = obj_to_verify_selector.nextObject();
if (!obj) {
log.info("All objects have been verified");
return;
}
const obj_status = verify_object_with_retries(obj, 3);
obj_counters[obj_status].add(1);
obj_registry.setObjectStatus(obj.id, obj.status, obj_status);
}
function verify_object_with_retries(obj, attempts) {
for (let i = 0; i < attempts; i++) {
let result;
// Different name is required.
// ReferenceError: Cannot access a variable before initialization.
let lg = log;
if (obj.c_id && obj.o_id) {
lg = lg.withFields({cid: obj.c_id, oid: obj.o_id});
result = grpc_client.verifyHash(obj.c_id, obj.o_id, obj.payload_hash);
} else if (obj.s3_bucket && obj.s3_key) {
lg = lg.withFields({bucket: obj.s3_bucket, key: obj.s3_key});
result = s3_client.verifyHash(obj.s3_bucket, obj.s3_key, obj.payload_hash);
} else {
lg.withFields({
cid: obj.c_id,
oid: obj.o_id,
bucket: obj.s3_bucket,
key: obj.s3_key
}).warn(`Object cannot be verified with supported protocols`);
return "skipped";
}
if (result.success) {
return "verified";
} else if (result.error == "hash mismatch") {
return "invalid";
}
// Unless we explicitly saw that there was a hash mismatch, then we will retry after a delay
lg.error(`Verify error: ${result.error}. Object will be re-tried`);
sleep(__ENV.SLEEP);
}
return "invalid";
}