fn build()

in core/src/services/azfile/backend.rs [152:240]
75 lines of code
3 McCabe index (conditional complexity)

    fn build(self) -> Result<impl Access> {
        debug!("backend build started: {:?}", &self);

        let root = normalize_root(&self.config.root.unwrap_or_default());
        debug!("backend use root {}", root);

        let endpoint = match &self.config.endpoint {
            Some(endpoint) => Ok(endpoint.clone()),
            None => Err(Error::new(ErrorKind::ConfigInvalid, "endpoint is empty")
                .with_operation("Builder::build")
                .with_context("service", Scheme::Azfile)),
        }?;
        debug!("backend use endpoint {}", &endpoint);

        let account_name_option = self
            .config
            .account_name
            .clone()
            .or_else(|| infer_account_name_from_endpoint(endpoint.as_str()));

        let account_name = match account_name_option {
            Some(account_name) => Ok(account_name),
            None => Err(
                Error::new(ErrorKind::ConfigInvalid, "account_name is empty")
                    .with_operation("Builder::build")
                    .with_context("service", Scheme::Azfile),
            ),
        }?;

        let config_loader = AzureStorageConfig {
            account_name: Some(account_name),
            account_key: self.config.account_key.clone(),
            sas_token: self.config.sas_token.clone(),
            ..Default::default()
        };

        let cred_loader = AzureStorageLoader::new(config_loader);
        let signer = AzureStorageSigner::new();
        Ok(AzfileBackend {
            core: Arc::new(AzfileCore {
                info: {
                    let am = AccessorInfo::default();
                    am.set_scheme(Scheme::Azfile)
                        .set_root(&root)
                        .set_native_capability(Capability {
                            stat: true,
                            stat_has_cache_control: true,
                            stat_has_content_length: true,
                            stat_has_content_type: true,
                            stat_has_content_encoding: true,
                            stat_has_content_range: true,
                            stat_has_etag: true,
                            stat_has_content_md5: true,
                            stat_has_last_modified: true,
                            stat_has_content_disposition: true,

                            read: true,

                            write: true,
                            create_dir: true,
                            delete: true,
                            rename: true,

                            list: true,
                            list_has_etag: true,
                            list_has_last_modified: true,
                            list_has_content_length: true,

                            shared: true,

                            ..Default::default()
                        });

                    // allow deprecated api here for compatibility
                    #[allow(deprecated)]
                    if let Some(client) = self.http_client {
                        am.update_http_client(|_| client);
                    }

                    am.into()
                },
                root,
                endpoint,
                loader: cred_loader,
                signer,
                share_name: self.config.share_name.clone(),
            }),
        })
    }