fn forward()

in sources/api/migration/migrations/v1.5.3/vmware-host-containers/src/main.rs [19:88]
66 lines of code
7 McCabe index (conditional complexity)

    fn forward(&mut self, mut input: MigrationData) -> Result<MigrationData> {
        // For admin container
        if let Some(data) = input.data.get_mut(ADMIN_CONTAINER_SOURCE_SETTING_NAME) {
            match data {
                serde_json::Value::String(source) => {
                    for ver in PREVIOUS_ADMIN_CONTAINER_VERSIONS {
                        let prev_source = format!("{}:{}", ADMIN_CONTAINER_IMAGE_REPOSITORY, ver);
                        if *source == prev_source {
                            *source = format!(
                                "{}:{}",
                                ADMIN_CONTAINER_IMAGE_REPOSITORY, TARGET_ADMIN_CONTAINER_VERSION
                            );
                            println!(
                                "Changed value of '{}' from '{}' to '{}' on upgrade",
                                ADMIN_CONTAINER_SOURCE_SETTING_NAME, prev_source, source
                            );
                            break;
                        }
                    }
                }
                _ => {
                    println!(
                        "'{}' is set to non-string value '{}'",
                        ADMIN_CONTAINER_SOURCE_SETTING_NAME, data
                    );
                }
            }
        } else {
            println!(
                "Found no '{}' to change on upgrade",
                ADMIN_CONTAINER_SOURCE_SETTING_NAME
            );
        }

        // For control container
        if let Some(data) = input.data.get_mut(CONTROL_CONTAINER_SOURCE_SETTING_NAME) {
            match data {
                serde_json::Value::String(source) => {
                    for ver in PREVIOUS_CONTROL_CONTAINER_VERSIONS {
                        let prev_source = format!("{}:{}", CONTROL_CONTAINER_IMAGE_REPOSITORY, ver);
                        if *source == prev_source {
                            *source = format!(
                                "{}:{}",
                                CONTROL_CONTAINER_IMAGE_REPOSITORY,
                                TARGET_CONTROL_CONTAINER_VERSION
                            );
                            println!(
                                "Changed value of '{}' from '{}' to '{}' on upgrade",
                                CONTROL_CONTAINER_SOURCE_SETTING_NAME, prev_source, source
                            );
                            break;
                        }
                    }
                }
                _ => {
                    println!(
                        "'{}' is set to non-string value '{}'",
                        CONTROL_CONTAINER_SOURCE_SETTING_NAME, data
                    );
                }
            }
        } else {
            println!(
                "Found no '{}' to change on upgrade",
                CONTROL_CONTAINER_SOURCE_SETTING_NAME
            );
        }

        Ok(input)
    }