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bundle-uri.h
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168 lines (142 loc) · 4.24 KB
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#ifndef BUNDLE_URI_H
#define BUNDLE_URI_H
#include "hashmap.h"
#include "strbuf.h"
struct packet_reader;
struct repository;
struct string_list;
/**
* The remote_bundle_info struct contains information for a single bundle
* URI. This may be initialized simply by a given URI or might have
* additional metadata associated with it if the bundle was advertised by
* a bundle list.
*/
struct remote_bundle_info {
struct hashmap_entry ent;
/**
* The 'id' is a name given to the bundle for reference
* by other bundle infos.
*/
char *id;
/**
* The 'uri' is the location of the remote bundle so
* it can be downloaded on-demand. This will be NULL
* if there was no table of contents.
*/
char *uri;
/**
* If the bundle has been downloaded, then 'file' is a
* filename storing its contents. Otherwise, 'file' is
* NULL.
*/
char *file;
/**
* If the bundle has been unbundled successfully, then
* this boolean is true.
*/
unsigned unbundled:1;
/**
* If the bundle is part of a list with the creationToken
* heuristic, then we use this member for sorting the bundles.
*/
uint64_t creationToken;
};
#define REMOTE_BUNDLE_INFO_INIT { 0 }
enum bundle_list_mode {
BUNDLE_MODE_NONE = 0,
BUNDLE_MODE_ALL,
BUNDLE_MODE_ANY
};
enum bundle_list_heuristic {
BUNDLE_HEURISTIC_NONE = 0,
BUNDLE_HEURISTIC_CREATIONTOKEN,
/* Must be last. */
BUNDLE_HEURISTIC__COUNT
};
/**
* A bundle_list contains an unordered set of remote_bundle_info structs,
* as well as information about the bundle listing, such as version and
* mode.
*/
struct bundle_list {
int version;
enum bundle_list_mode mode;
struct hashmap bundles;
/**
* The baseURI of a bundle_list is the URI that provided the list.
*
* In the case of the 'bundle-uri' protocol v2 command, the base
* URI is the URI of the Git remote.
*
* Otherwise, the bundle list was downloaded over HTTP from some
* known URI. 'baseURI' is set to that value.
*
* The baseURI is used as the base for any relative URIs
* advertised by the bundle list at that location.
*/
char *baseURI;
/**
* A list can have a heuristic, which helps reduce the number of
* downloaded bundles.
*/
enum bundle_list_heuristic heuristic;
};
void init_bundle_list(struct bundle_list *list);
void clear_bundle_list(struct bundle_list *list);
typedef int (*bundle_iterator)(struct remote_bundle_info *bundle,
void *data);
int for_all_bundles_in_list(struct bundle_list *list,
bundle_iterator iter,
void *data);
struct FILE;
void print_bundle_list(FILE *fp, struct bundle_list *list);
/**
* A bundle URI may point to a bundle list where the key=value
* pairs are provided in config file format. This method is
* exposed publicly for testing purposes.
*/
int bundle_uri_parse_config_format(const char *uri,
const char *filename,
struct bundle_list *list);
/**
* Fetch data from the given 'uri' and unbundle the bundle data found
* based on that information.
*
* Returns non-zero if no bundle information is found at the given 'uri'.
*
* If the pointer 'has_heuristic' is non-NULL, then the value it points to
* will be set to be non-zero if and only if the fetched list has a
* heuristic value. Such a value indicates that the list was designed for
* incremental fetches.
*/
int fetch_bundle_uri(struct repository *r, const char *uri,
int *has_heuristic);
/**
* Given a bundle list that was already advertised (likely by the
* bundle-uri protocol v2 verb) at the given uri, fetch and unbundle the
* bundles according to the bundle strategy of that list.
*
* It is expected that the given 'list' is initialized, including its
* 'baseURI' value.
*
* Returns non-zero if there was an error trying to download the list
* or any of its advertised bundles.
*/
int fetch_bundle_list(struct repository *r,
struct bundle_list *list);
/**
* API for serve.c.
*/
int bundle_uri_advertise(struct repository *r, struct strbuf *value);
int bundle_uri_command(struct repository *r, struct packet_reader *request);
/**
* General API for {transport,connect}.c etc.
*/
/**
* Parse a "key=value" packet line from the bundle-uri verb.
*
* Returns 0 on success and non-zero on error.
*/
int bundle_uri_parse_line(struct bundle_list *list,
const char *line);
#endif