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authorTay Ray Chuan <rctay89@gmail.com>2009-06-06 08:44:01 (GMT)
committerJunio C Hamano <gitster@pobox.com>2009-06-06 18:03:11 (GMT)
commit2264dfa5c4f11e2b0e2740072208186bee361afd (patch)
tree40022b4b80e2af8b0659e85b821a2208847c7670
parent39dc52cf4ff04e9cd4d2562218ad619e23a81efa (diff)
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http*: add helper methods for fetching packs
The code handling the fetching of packs in http-push.c and http-walker.c have been refactored into new methods and a new struct (http_pack_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_pack_request - finish_http_pack_request - release_http_pack_request and the new struct is http_pack_request. Add a function, new_http_pack_request(), that deals with the details of coming up with the filename to store the retrieved packfile, resuming a previously aborted request, and making a new curl request. Update http-push.c::start_fetch_packed() and http-walker.c::fetch_pack() to use this. Add a function, finish_http_pack_request(), that deals with renaming the pack, advancing the pack list, and installing the pack. Update http-push.c::finish_request() and http-walker.c::fetch_pack to use this. Update release_request() in http-push.c and http-walker.c to invoke release_http_pack_request() to clean up pack request helper data. The local_stream member of the transfer_request struct in http-push.c has been removed, as the packfile pointer will be managed in the struct http_pack_request. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--http-push.c110
-rw-r--r--http-walker.c85
-rw-r--r--http.c106
-rw-r--r--http.h17
4 files changed, 167 insertions, 151 deletions
diff --git a/http-push.c b/http-push.c
index 7ad3b69..8232cf4 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1,6 +1,5 @@
#include "cache.h"
#include "commit.h"
-#include "pack.h"
#include "tag.h"
#include "blob.h"
#include "http.h"
@@ -119,7 +118,6 @@ struct transfer_request
char filename[PATH_MAX];
char tmpfile[PATH_MAX];
int local_fileno;
- FILE *local_stream;
enum transfer_state state;
CURLcode curl_result;
char errorstr[CURL_ERROR_SIZE];
@@ -452,16 +450,10 @@ static void start_mkcol(struct transfer_request *request)
static void start_fetch_packed(struct transfer_request *request)
{
- char *url;
struct packed_git *target;
- FILE *packfile;
- char *filename;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
struct transfer_request *check_request = request_queue_head;
- struct active_request_slot *slot;
+ struct http_pack_request *preq;
target = find_sha1_pack(request->obj->sha1, repo->packs);
if (!target) {
@@ -474,68 +466,35 @@ static void start_fetch_packed(struct transfer_request *request)
fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
- filename = sha1_pack_name(target->sha1);
- snprintf(request->filename, sizeof(request->filename), "%s", filename);
- snprintf(request->tmpfile, sizeof(request->tmpfile),
- "%s.temp", filename);
-
- url = xmalloc(strlen(repo->url) + 64);
- sprintf(url, "%sobjects/pack/pack-%s.pack",
- repo->url, sha1_to_hex(target->sha1));
+ preq = new_http_pack_request(target, repo->url);
+ if (preq == NULL) {
+ release_http_pack_request(preq);
+ repo->can_update_info_refs = 0;
+ return;
+ }
+ preq->lst = &repo->packs;
/* Make sure there isn't another open request for this pack */
while (check_request) {
if (check_request->state == RUN_FETCH_PACKED &&
- !strcmp(check_request->url, url)) {
- free(url);
+ !strcmp(check_request->url, preq->url)) {
+ release_http_pack_request(preq);
release_request(request);
return;
}
check_request = check_request->next;
}
- packfile = fopen(request->tmpfile, "a");
- if (!packfile) {
- fprintf(stderr, "Unable to open local file %s for pack",
- request->tmpfile);
- repo->can_update_info_refs = 0;
- free(url);
- return;
- }
-
- slot = get_active_slot();
- slot->callback_func = process_response;
- slot->callback_data = request;
- request->slot = slot;
- request->local_stream = packfile;
- request->userData = target;
-
- request->url = url;
- curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
- curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
- curl_easy_setopt(slot->curl, CURLOPT_URL, url);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
- slot->local = packfile;
-
- /*
- * If there is data present from a previous transfer attempt,
- * resume where it left off
- */
- prev_posn = ftell(packfile);
- if (prev_posn>0) {
- if (push_verbosely)
- fprintf(stderr,
- "Resuming fetch of pack %s at byte %ld\n",
- sha1_to_hex(target->sha1), prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
- }
+ preq->slot->callback_func = process_response;
+ preq->slot->callback_data = request;
+ request->slot = preq->slot;
+ request->userData = preq;
/* Try to get the request started, abort the request on error */
request->state = RUN_FETCH_PACKED;
- if (!start_active_slot(slot)) {
+ if (!start_active_slot(preq->slot)) {
fprintf(stderr, "Unable to start GET request\n");
+ release_http_pack_request(preq);
repo->can_update_info_refs = 0;
release_request(request);
}
@@ -718,8 +677,6 @@ static void release_request(struct transfer_request *request)
if (request->local_fileno != -1)
close(request->local_fileno);
- if (request->local_stream)
- fclose(request->local_stream);
free(request->url);
free(request);
}
@@ -727,13 +684,10 @@ static void release_request(struct transfer_request *request)
static void finish_request(struct transfer_request *request)
{
struct stat st;
- struct packed_git *target;
- struct packed_git **lst;
- struct active_request_slot *slot;
+ struct http_pack_request *preq;
request->curl_result = request->slot->curl_result;
request->http_code = request->slot->http_code;
- slot = request->slot;
request->slot = NULL;
/* Keep locks active */
@@ -821,31 +775,21 @@ static void finish_request(struct transfer_request *request)
start_fetch_packed(request);
} else if (request->state == RUN_FETCH_PACKED) {
+ int fail = 1;
if (request->curl_result != CURLE_OK) {
fprintf(stderr, "Unable to get pack file %s\n%s",
request->url, curl_errorstr);
- repo->can_update_info_refs = 0;
} else {
- off_t pack_size = ftell(request->local_stream);
-
- fclose(request->local_stream);
- request->local_stream = NULL;
- slot->local = NULL;
- if (!move_temp_to_file(request->tmpfile,
- request->filename)) {
- target = (struct packed_git *)request->userData;
- target->pack_size = pack_size;
- lst = &repo->packs;
- while (*lst != target)
- lst = &((*lst)->next);
- *lst = (*lst)->next;
-
- if (!verify_pack(target))
- install_packed_git(target);
- else
- repo->can_update_info_refs = 0;
+ preq = (struct http_pack_request *)request->userData;
+
+ if (preq) {
+ if (finish_http_pack_request(preq) > 0)
+ fail = 0;
+ release_http_pack_request(preq);
}
}
+ if (fail)
+ repo->can_update_info_refs = 0;
release_request(request);
}
}
@@ -900,7 +844,6 @@ static void add_fetch_request(struct object *obj)
request->lock = NULL;
request->headers = NULL;
request->local_fileno = -1;
- request->local_stream = NULL;
request->state = NEED_FETCH;
request->next = request_queue_head;
request_queue_head = request;
@@ -940,7 +883,6 @@ static int add_send_request(struct object *obj, struct remote_lock *lock)
request->lock = lock;
request->headers = NULL;
request->local_fileno = -1;
- request->local_stream = NULL;
request->state = NEED_PUSH;
request->next = request_queue_head;
request_queue_head = request;
diff --git a/http-walker.c b/http-walker.c
index ac343fd..8f7a975 100644
--- a/http-walker.c
+++ b/http-walker.c
@@ -1,6 +1,5 @@
#include "cache.h"
#include "commit.h"
-#include "pack.h"
#include "walker.h"
#include "http.h"
@@ -590,19 +589,10 @@ static int fetch_indices(struct walker *walker, struct alt_base *repo)
static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
- char *url;
struct packed_git *target;
- struct packed_git **lst;
- FILE *packfile;
- char *filename;
- char tmpfile[PATH_MAX];
int ret;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
-
- struct active_request_slot *slot;
struct slot_results results;
+ struct http_pack_request *preq;
if (fetch_indices(walker, repo))
return -1;
@@ -617,72 +607,33 @@ static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned cha
sha1_to_hex(sha1));
}
- url = xmalloc(strlen(repo->base) + 65);
- sprintf(url, "%s/objects/pack/pack-%s.pack",
- repo->base, sha1_to_hex(target->sha1));
+ preq = new_http_pack_request(target, repo->base);
+ if (preq == NULL)
+ goto abort;
+ preq->lst = &repo->packs;
+ preq->slot->results = &results;
- filename = sha1_pack_name(target->sha1);
- snprintf(tmpfile, sizeof(tmpfile), "%s.temp", filename);
- packfile = fopen(tmpfile, "a");
- if (!packfile)
- return error("Unable to open local file %s for pack",
- tmpfile);
-
- slot = get_active_slot();
- slot->results = &results;
- curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
- curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
- curl_easy_setopt(slot->curl, CURLOPT_URL, url);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
- slot->local = packfile;
-
- /*
- * If there is data present from a previous transfer attempt,
- * resume where it left off
- */
- prev_posn = ftell(packfile);
- if (prev_posn>0) {
- if (walker->get_verbosely)
- fprintf(stderr,
- "Resuming fetch of pack %s at byte %ld\n",
- sha1_to_hex(target->sha1), prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, range_header);
- }
-
- if (start_active_slot(slot)) {
- run_active_slot(slot);
+ if (start_active_slot(preq->slot)) {
+ run_active_slot(preq->slot);
if (results.curl_result != CURLE_OK) {
- fclose(packfile);
- slot->local = NULL;
- return error("Unable to get pack file %s\n%s", url,
- curl_errorstr);
+ error("Unable to get pack file %s\n%s", preq->url,
+ curl_errorstr);
+ goto abort;
}
} else {
- fclose(packfile);
- slot->local = NULL;
- return error("Unable to start request");
+ error("Unable to start request");
+ goto abort;
}
- target->pack_size = ftell(packfile);
- fclose(packfile);
- slot->local = NULL;
-
- ret = move_temp_to_file(tmpfile, filename);
+ ret = finish_http_pack_request(preq);
+ release_http_pack_request(preq);
if (ret)
return ret;
- lst = &repo->packs;
- while (*lst != target)
- lst = &((*lst)->next);
- *lst = (*lst)->next;
-
- if (verify_pack(target))
- return -1;
- install_packed_git(target);
-
return 0;
+
+abort:
+ return -1;
}
static void abort_object_request(struct object_request *obj_req)
diff --git a/http.c b/http.c
index 0701a6f..3815934 100644
--- a/http.c
+++ b/http.c
@@ -1,4 +1,5 @@
#include "http.h"
+#include "pack.h"
int data_received;
int active_requests;
@@ -889,3 +890,108 @@ cleanup:
free(url);
return ret;
}
+
+void release_http_pack_request(struct http_pack_request *preq)
+{
+ if (preq->packfile != NULL) {
+ fclose(preq->packfile);
+ preq->packfile = NULL;
+ preq->slot->local = NULL;
+ }
+ if (preq->range_header != NULL) {
+ curl_slist_free_all(preq->range_header);
+ preq->range_header = NULL;
+ }
+ preq->slot = NULL;
+ free(preq->url);
+}
+
+int finish_http_pack_request(struct http_pack_request *preq)
+{
+ int ret;
+ struct packed_git **lst;
+
+ preq->target->pack_size = ftell(preq->packfile);
+
+ if (preq->packfile != NULL) {
+ fclose(preq->packfile);
+ preq->packfile = NULL;
+ preq->slot->local = NULL;
+ }
+
+ ret = move_temp_to_file(preq->tmpfile, preq->filename);
+ if (ret)
+ return ret;
+
+ lst = preq->lst;
+ while (*lst != preq->target)
+ lst = &((*lst)->next);
+ *lst = (*lst)->next;
+
+ if (verify_pack(preq->target))
+ return -1;
+ install_packed_git(preq->target);
+
+ return 0;
+}
+
+struct http_pack_request *new_http_pack_request(
+ struct packed_git *target, const char *base_url)
+{
+ char *url;
+ char *filename;
+ long prev_posn = 0;
+ char range[RANGE_HEADER_SIZE];
+ struct strbuf buf = STRBUF_INIT;
+ struct http_pack_request *preq;
+
+ preq = xmalloc(sizeof(*preq));
+ preq->target = target;
+ preq->range_header = NULL;
+
+ end_url_with_slash(&buf, base_url);
+ strbuf_addf(&buf, "objects/pack/pack-%s.pack",
+ sha1_to_hex(target->sha1));
+ url = strbuf_detach(&buf, NULL);
+ preq->url = xstrdup(url);
+
+ filename = sha1_pack_name(target->sha1);
+ snprintf(preq->filename, sizeof(preq->filename), "%s", filename);
+ snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", filename);
+ preq->packfile = fopen(preq->tmpfile, "a");
+ if (!preq->packfile) {
+ error("Unable to open local file %s for pack",
+ preq->tmpfile);
+ goto abort;
+ }
+
+ preq->slot = get_active_slot();
+ preq->slot->local = preq->packfile;
+ curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
+ curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
+ curl_easy_setopt(preq->slot->curl, CURLOPT_URL, url);
+ curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
+ no_pragma_header);
+
+ /*
+ * If there is data present from a previous transfer attempt,
+ * resume where it left off
+ */
+ prev_posn = ftell(preq->packfile);
+ if (prev_posn>0) {
+ if (http_is_verbose)
+ fprintf(stderr,
+ "Resuming fetch of pack %s at byte %ld\n",
+ sha1_to_hex(target->sha1), prev_posn);
+ sprintf(range, "Range: bytes=%ld-", prev_posn);
+ preq->range_header = curl_slist_append(NULL, range);
+ curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
+ preq->range_header);
+ }
+
+ return preq;
+
+abort:
+ free(filename);
+ return NULL;
+}
diff --git a/http.h b/http.h
index 180b1c2..511c0c4 100644
--- a/http.h
+++ b/http.h
@@ -150,4 +150,21 @@ extern int http_fetch_ref(const char *base, struct ref *ref);
extern int http_get_info_packs(const char *base_url,
struct packed_git **packs_head);
+struct http_pack_request
+{
+ char *url;
+ struct packed_git *target;
+ struct packed_git **lst;
+ FILE *packfile;
+ char filename[PATH_MAX];
+ char tmpfile[PATH_MAX];
+ struct curl_slist *range_header;
+ struct active_request_slot *slot;
+};
+
+extern struct http_pack_request *new_http_pack_request(
+ struct packed_git *target, const char *base_url);
+extern int finish_http_pack_request(struct http_pack_request *preq);
+extern void release_http_pack_request(struct http_pack_request *preq);
+
#endif /* HTTP_H */