private async retrieveJSONOrError(response: Response) {
if (!response.ok) {
return Promise.reject(response.statusText)
} else {
return await response.json()
}
}
function parseJSON(resp: Response): any {
const contentType = resp.headers.get('Content-Type');
if (contentType && contentType.indexOf('application/json') !== -1) {
return resp.json();
} else {
return resp;
}
}
async readAuthTimestamp(bucketAddress: string): Promise<number> {
const authTimestampDir = this.getAuthTimestampFileDir(bucketAddress)
let fetchResponse: Response
try {
const authNumberFileUrl = `${this.readUrlPrefix}${authTimestampDir}/${AUTH_TIMESTAMP_FILE_NAME}`
fetchResponse = await fetch(authNumberFileUrl, {
redirect: 'manual',
headers: {
'Cache-Control': 'no-cache'
}
})
} catch (err) {
// Catch any errors that may occur from network issues during `fetch` async operation.
const errMsg = (err instanceof Error) ? err.message : err
throw new errors.ValidationError(`Error trying to fetch bucket authentication revocation timestamp: ${errMsg}`)
}
if (fetchResponse.ok) {
try {
const authNumberText = await fetchResponse.text()
const authNumber = parseInt(authNumberText)
if (Number.isFinite(authNumber)) {
return authNumber
} else {
throw new errors.ValidationError(`Bucket contained an invalid authentication revocation timestamp: ${authNumberText}`)
}
} catch (err) {
// Catch any errors that may occur from network issues during `.text()` async operation.
const errMsg = (err instanceof Error) ? err.message : err
throw new errors.ValidationError(`Error trying to read fetch stream of bucket authentication revocation timestamp: ${errMsg}`)
}
} else if (fetchResponse.status === 404) {
// 404 incidates no revocation file has been created.
return 0
} else {
throw new errors.ValidationError(`Error trying to fetch bucket authentication revocation timestamp: server returned ${fetchResponse.status} - ${fetchResponse.statusText}`)
}
}
private async handleResponse(
response: Response,
options: any,
operationName: OperationName
): Promise<OperationResponse> {
if (options.write) {
if (response.status >= 400) {
return {[operationName]: {success: false}, peek: false}
}
return {[operationName]: {success: true}, peek: false}
} else {
const {data} = await response.json()
return {peek: data, [operationName]: {success: true}}
}
}
function checkStatus(resp: Response): any {
if (resp.status >= 200 && resp.status < 300) {
return resp;
} else {
const contentType = resp.headers.get('Content-Type');
if (contentType && contentType.indexOf('application/json') !== -1) {
return resp.json().then((data) => {
if (data.message) {
throw new KevoreeRegistryClientError(resp, ` - ${data.message}`);
} else if (data.error_description) {
throw new KevoreeRegistryClientError(resp, ` - ${data.error_description}`);
} else {
throw new KevoreeRegistryClientError(resp);
}
});
} else {
throw new KevoreeRegistryClientError(resp, ` - ${resp.url}`);
}
}
}