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use crate::{
common::{Projection, StandardQueryParameters},
error::Error,
response::ApiResponse,
types::BucketName,
};
use std::convert::TryFrom;
#[derive(Default, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ListOptional<'a> {
#[serde(flatten)]
pub standard_params: StandardQueryParameters<'a>,
/// Returns results in a directory-like mode. items will contain
/// only objects whose names, aside from the prefix, do not contain
/// delimiter. Objects whose names, aside from the prefix, contain
/// delimiter will have their name, truncated after the delimiter,
/// returned in prefixes. Duplicate prefixes are omitted.
#[serde(skip_serializing_if = "Option::is_none")]
pub delimiter: Option<&'a str>,
/// If true, objects that end in exactly one instance of delimiter
/// will have their metadata included in items in addition to prefixes.
#[serde(skip_serializing_if = "crate::util::if_false")]
pub include_trailing_delimiter: bool,
/// Maximum number of items plus prefixes to return in a single page
/// of responses. As duplicate prefixes are omitted, fewer total
/// results may be returned than requested. The service will use
/// this parameter or 1,000 items, whichever is smaller.
#[serde(skip_serializing_if = "Option::is_none")]
pub max_results: Option<u32>,
/// A previously-returned page token representing part of the larger
/// set of results to view.
///
/// The pageToken is an encoded field that marks the name and generation
/// of the last object in the returned list. In a subsequent request
/// using the pageToken, items that come after the pageToken are shown
/// (up to maxResults).
///
/// If you start a listing and then create an object in the bucket before
/// using a pageToken to continue listing, you will not see the new
/// object in subsequent listing results if it is in part of the object
/// namespace already listed.
#[serde(skip_serializing_if = "Option::is_none")]
pub page_token: Option<&'a str>,
/// Filter results to objects whose names begin with this prefix.
#[serde(skip_serializing_if = "Option::is_none")]
pub prefix: Option<&'a str>,
#[serde(skip_serializing_if = "Option::is_none")]
pub projection: Option<Projection>,
/// The project to be billed for this request.
/// Required for Requester Pays buckets.
#[serde(skip_serializing_if = "Option::is_none")]
pub user_project: Option<&'a str>,
/// If true, lists all versions of an object as distinct results.
/// The default is false. For more information, see Object Versioning.
#[serde(skip_serializing_if = "crate::util::if_false")]
pub versions: bool,
}
pub struct ListResponse {
/// The list of objects matching the query
pub objects: Vec<super::Metadata>,
/// The list of prefixes of objects matching-but-not-listed up to
/// and including the requested delimiter.
pub prefixes: Vec<String>,
/// The continuation token, included only if there are more items to return.
/// Provide this value as the page_token of a subsequent request in order
/// to return the next page of results.
pub page_token: Option<String>,
}
impl ApiResponse<&[u8]> for ListResponse {}
impl ApiResponse<bytes::Bytes> for ListResponse {}
impl<B> TryFrom<http::Response<B>> for ListResponse
where
B: AsRef<[u8]>,
{
type Error = Error;
fn try_from(response: http::Response<B>) -> Result<Self, Self::Error> {
let (_parts, body) = response.into_parts();
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct RawListResponse {
next_page_token: Option<String>,
#[serde(default)]
prefixes: Vec<String>,
// This field won't be present if the list doesn't actually
// return any items
#[serde(default)]
items: Vec<super::Metadata>,
}
let res: RawListResponse = serde_json::from_slice(body.as_ref())?;
Ok(Self {
objects: res.items,
prefixes: res.prefixes,
page_token: res.next_page_token,
})
}
}
impl super::Object {
/// Retrieves a list of objects matching the criteria.
///
/// Required IAM Permissions: `storage.objects.list`, `storage.objects.getIamPolicy`*
///
/// [Complete API Documentation](https://cloud.google.com/storage/docs/json_api/v1/objects/list)
pub fn list(
bucket: &BucketName<'_>,
optional: Option<ListOptional<'_>>,
) -> Result<http::Request<std::io::Empty>, Error> {
let mut uri = format!("https://www.googleapis.com/storage/v1/b/{}/o", bucket);
let query = optional.unwrap_or_default();
let query_params = serde_urlencoded::to_string(query)?;
if !query_params.is_empty() {
uri.push('?');
uri.push_str(&query_params);
}
let req_builder = http::Request::builder();
Ok(req_builder.method("GET").uri(uri).body(std::io::empty())?)
}
}