Struct K6ScriptGenerator 

pub struct K6ScriptGenerator { /* private fields */ }

Generate k6 load test script

Implementations

impl K6ScriptGenerator

pub fn new(config: K6Config, templates: Vec<RequestTemplate>) -> Self

Create a new k6 script generator.

The abort-on-error safety valve defaults to on at a 0.95 failure rate (round 60). Use with_abort_valve to opt out or retune it.

pub fn with_force_http1(self, force_http1: bool) -> Self

Round 63 (#79) — opt the generated script into the HTTP/1.1 comment (GODEBUG=http2client=0). Also auto-detected when any template or custom header is named Connection.

pub fn with_abort_valve( self, abort_on_error: bool, abort_on_error_rate: f64, ) -> Self

Configure the k6 abort-on-error memory safety valve (round 62 / #79).

abort_on_error = false drops the abortOnFail threshold entirely so the run executes its full duration regardless of error rate — required for stress tests against a WAF/proxy that legitimately rejects most requests. abort_on_error_rate tunes the failure rate (0.0-1.0) above which a target aborts after the 60s grace period.

pub fn should_force_http1(&self) -> bool

HTTP/2 forbids Connection. Keep the header (it IS the WAF case) and force HTTP/1.1 instead.

pub fn generate(&self) -> Result<String>

Generate the k6 script

pub fn sanitize_k6_metric_name(name: &str) -> String

Sanitize a name into a valid k6 metric-name base, capped at K6_METRIC_NAME_BASE_MAX_LEN characters.

k6 rejects metric names longer than 128 chars, and our templates append suffixes like _latency, _errors, _stepN_latency — reserve room for the longest suffix and truncate the base name when needed. Truncation appends an 8-hex-char hash of the original name so distinct long names produce distinct metric names.

Examples:

• “short_name” -> “short_name”
• 200-char OperationId -> “_<8-hex-hash>”

pub fn sanitize_js_identifier(name: &str) -> String

Sanitize a name to be a valid JavaScript identifier

Replaces invalid characters (dots, spaces, special chars) with underscores. Ensures the identifier starts with a letter or underscore (not a number).

Examples:

• “billing.subscriptions.v1” -> “billing_subscriptions_v1”
• “get user” -> “get_user”
• “123invalid” -> “_123invalid”

pub fn validate_script(script: &str) -> Vec<String>

Validate the generated k6 script for common issues

Checks for:

• Invalid metric names (contains dots or special characters)
• Invalid JavaScript variable names
• Missing required k6 imports

Returns a list of validation errors, empty if all checks pass.