Enable the retry for cert for handling InvalidCertificate error

[SivaParvathip21]

Enable the get_cert_retry for handling the InvalidCertificate issue while device goes for a softreset concurrently with DDI Operation.

[Copilot]

Pull request overview

This PR updates the DDI MBOR integration-test helpers to make certificate retrieval more resilient to transient InvalidCertificate failures that can occur when a device soft-reset (iDFU) overlaps with DDI operations.

Changes:

• Added retry helpers for GetCertificate to reattempt on DdiStatus::InvalidCertificate with a fixed backoff.
• Switched leaf-cert retrieval and cert-chain enumeration paths to optionally use the new retry logic.
• Applied the retry behavior to POTAs endorsement helper certificate retrieval.

Comments suppressed due to low confidence (3)

ddi/mbor/types/tests/integration/common.rs:238

• This retry path uses println!, which produces unstructured stdout and is inconsistent with the surrounding tracing::* usage. Prefer tracing::debug!/warn! for consistent, filterable logs.

             println!("Retrying the get_cert operation for cert_id {}", cert_id);

ddi/mbor/types/tests/integration/common.rs:351

• The retry behavior in helper_verify_leaf_cert is also gated behind IDFU=1, which means InvalidCertificate flakes won’t be handled unless the environment variable is set. Since the retry helper only delays on the specific transient error, using it unconditionally is typically safer for integration tests.

    let idfu_enabled = std::env::var("IDFU").map(|v| v == "1").unwrap_or(false);
    let result = helper_get_cert_chain_info(dev);
    assert!(result.is_ok(), "result {:?}", result);

    let resp = result.unwrap();

ddi/mbor/types/tests/integration/common.rs:387

• helper_get_pota_endorsement has the same IDFU=1 gating for retries. If InvalidCertificate can occur during concurrent soft reset, tests calling this helper will still flake unless that env var is set. Consider always using the retry helper and only sleeping when the transient error actually happens.

    let idfu_enabled = std::env::var("IDFU").map(|v| v == "1").unwrap_or(false);
    let get_cert_chain_info = helper_get_cert_chain_info(dev).unwrap();
    let leaf_cert_id = get_cert_chain_info.data.num_certs - 1;
    let cert_resp = if idfu_enabled {
         tracing::debug!("Device is in IDfu mode");

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[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

Comments suppressed due to low confidence (5)

ddi/mbor/types/tests/integration/common.rs:200

• The docstring says this helper returns the last success/error, but it currently panics on GetCertChainInfo failures due to assert!/unwrap(). Since the function already returns Result, propagate the error instead (and avoid re-fetching the cert chain info on every retry when only the leaf cert id is needed).

        let cert_info = helper_get_cert_chain_info(dev);
        assert!(cert_info.is_ok(), "cert_info {:?}", cert_info);
        let resp = cert_info.unwrap();
        let num_certs = resp.data.num_certs;

ddi/mbor/types/tests/integration/common.rs:208

• Using println! in retry loops can spam CI output and bypass the test logging configuration. Prefer tracing (already used elsewhere in this file) and the existing std::thread import.

            println!("Retrying the get_cert operation");
            std::thread::sleep(std::time::Duration::from_millis(50));

ddi/mbor/types/tests/integration/common.rs:239

• Using println! here can generate noisy test output on transient retries; prefer tracing so it can be filtered/collected consistently.

             println!("Retrying the get_cert operation for cert_id {}", cert_id);
             std::thread::sleep(std::time::Duration::from_millis(50));

ddi/mbor/types/tests/integration/common.rs:368

• Remove the commented-out old implementation to keep the helper easier to read and maintain.

        // let result: Result<DdiGetCertificateCmdResp, DdiError> = helper_get_certificate(dev, i);
        // assert!(result.is_ok(), "result {:?}", result);

        // let resp = result.unwrap();

ddi/mbor/types/tests/integration/common.rs:252

• The tracing message uses inconsistent capitalization ("IDfu") compared to the docstring’s "iDFU". Standardizing improves log searchability; please update the other occurrences in this file too.

         tracing::debug!("Device is in IDfu mode");