“update” ping

This opt-out ping is sent from Firefox Desktop when a browser update is ready to be applied and after it was correctly applied.

Structure:

{
  type: "update",
  ... common ping data
  clientId: <UUID>,
  environment: { ... },
  payload: {
    reason: <string>, // "ready", "success"
    targetChannel: <string>, // "nightly" (only present for reason = "ready")
    targetVersion: <string>, // "56.0a1" (only present for reason = "ready")
    targetBuildId: <string>, // "20080811053724" (only present for reason = "ready")
    targetDisplayVersion: <string>, // "56.0a1" (only present for reason = "ready")
    previousChannel: <string>, // "nightly" or null (only present for reason = "success")
    previousVersion: <string>, // "55.0a1" (only present for reason = "success")
    previousBuildId: <string>, // "20080810053724" (only present for reason = "success")
  }
}

payload.reason

This field supports the following values:

  • ready meaning that the ping was generated after an update was downloaded and marked as ready to be processed. For non-staged updates this happens as soon as the download finishes and is verified while for staged updates this happens before the staging step is started.

  • success the ping was generated after the browser was restarted and the update correctly applied.

payload.targetChannel

The Firefox channel the update was fetched from (only valid for pings with reason “ready”).

payload.targetVersion

The Firefox version the browser is updating to. Follows the same format as application.version (only valid for pings with reason “ready”).

payload.targetBuildId

The Firefox build id the browser is updating to. Follows the same format as application.buildId (only valid for pings with reason “ready”).

payload.targetDisplayVersion

The Firefox display version the browser is updating to. This may contain a different value than targetVersion, e.g. for the Beta channel this field will report the beta suffix while targetVersion will only report the version number.

payload.previousChannel

The Firefox channel the profile was on before the update was applied (only valid for pings with reason “success”). This can be null.

payload.previousVersion

The Firefox version the browser is updating from. Follows the same format as application.version (only valid for pings with reason “success”).

payload.previousBuildId

The Firefox build id the browser is updating from. Follows the same format as application.buildId (only valid for pings with reason “success”).

Expected behaviours

The following is a list of conditions and expected behaviours for the update ping:

  • The ping is generated once every time an update is downloaded, after it was verified:

    • for users who saw the privacy policy, the update ping is sent immediately;

    • for users who did not see the privacy policy, the update ping is saved to disk and sent after the policy is displayed.

  • If the download of the update retries or other fallback occurs: the update ping will not be generated multiple times, but only one time once the download is complete and verified.

  • If automatic updates are disabled: when the user forces a manual update, no update ping will be generated.

  • If updates fail to apply: in some cases the client will download the same update blob and generate a new update ping for the same target version and build id, with a different document id.

  • If the build update channel contains the CCK keyword, the update ping will not report it but rather report a vanilla channel name (e.g. mozilla-cck-test-beta gets reported as beta).

  • If a profile refresh occurs before the update is applied, the update ping with reason = success will not be generated.

  • If the update is applied on a new profile, different then the one it was downloaded in, the update ping with reason = success will not be generated.

  • If a newer browser version is installed over an older, the update ping with reason = success will not be generated.