117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/*
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* test-fsmonitor-client.c: client code to send commands/requests to
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* a `git fsmonitor--daemon` daemon.
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*/
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#include "test-tool.h"
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#include "cache.h"
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#include "parse-options.h"
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#include "fsmonitor-ipc.h"
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#ifndef HAVE_FSMONITOR_DAEMON_BACKEND
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int cmd__fsmonitor_client(int argc, const char **argv)
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{
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die("fsmonitor--daemon not available on this platform");
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}
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#else
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/*
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* Read the `.git/index` to get the last token written to the
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* FSMonitor Index Extension.
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*/
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static const char *get_token_from_index(void)
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{
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struct index_state *istate = the_repository->index;
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if (do_read_index(istate, the_repository->index_file, 0) < 0)
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die("unable to read index file");
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if (!istate->fsmonitor_last_update)
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die("index file does not have fsmonitor extension");
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return istate->fsmonitor_last_update;
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}
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/*
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* Send an IPC query to a `git-fsmonitor--daemon` daemon and
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* ask for the changes since the given token or from the last
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* token in the index extension.
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*
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* This will implicitly start a daemon process if necessary. The
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* daemon process will persist after we exit.
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*/
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static int do_send_query(const char *token)
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{
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struct strbuf answer = STRBUF_INIT;
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int ret;
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if (!token || !*token)
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token = get_token_from_index();
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ret = fsmonitor_ipc__send_query(token, &answer);
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if (ret < 0)
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die("could not query fsmonitor--daemon");
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write_in_full(1, answer.buf, answer.len);
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strbuf_release(&answer);
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return 0;
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}
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/*
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* Send a "flush" command to the `git-fsmonitor--daemon` (if running)
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* and tell it to flush its cache.
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*
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* This feature is primarily used by the test suite to simulate a loss of
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* sync with the filesystem where we miss kernel events.
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*/
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static int do_send_flush(void)
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{
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struct strbuf answer = STRBUF_INIT;
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int ret;
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ret = fsmonitor_ipc__send_command("flush", &answer);
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if (ret)
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return ret;
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write_in_full(1, answer.buf, answer.len);
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strbuf_release(&answer);
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return 0;
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}
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int cmd__fsmonitor_client(int argc, const char **argv)
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{
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const char *subcmd;
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const char *token = NULL;
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const char * const fsmonitor_client_usage[] = {
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"test-tool fsmonitor-client query [<token>]",
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"test-tool fsmonitor-client flush",
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NULL,
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};
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struct option options[] = {
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OPT_STRING(0, "token", &token, "token",
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"command token to send to the server"),
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OPT_END()
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};
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argc = parse_options(argc, argv, NULL, options, fsmonitor_client_usage, 0);
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if (argc != 1)
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usage_with_options(fsmonitor_client_usage, options);
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subcmd = argv[0];
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setup_git_directory();
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if (!strcmp(subcmd, "query"))
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return !!do_send_query(token);
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if (!strcmp(subcmd, "flush"))
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return !!do_send_flush();
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die("Unhandled subcommand: '%s'", subcmd);
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}
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#endif
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