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/*
* Copyright (c) 2022 Egor Tensin <Egor.Tensin@gmail.com>
* This file is part of the "cimple" project.
* For details, see https://github.com/egor-tensin/cimple.
* Distributed under the MIT License.
*/
#include "worker.h"
#include "ci.h"
#include "command.h"
#include "compiler.h"
#include "const.h"
#include "git.h"
#include "log.h"
#include "msg.h"
#include "net.h"
#include "process.h"
#include "signal.h"
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
struct worker {
int fd;
/* TODO: these are not used, but they should be! */
pthread_mutex_t task_mtx;
pthread_t task;
int task_active;
};
int worker_create(struct worker **_worker, const struct settings *settings)
{
int ret = 0;
struct worker *worker = malloc(sizeof(struct worker));
if (!worker) {
log_errno("malloc");
return -1;
}
ret = libgit_init();
if (ret < 0)
goto free;
ret = net_connect(settings->host, settings->port);
if (ret < 0)
goto git_shutdown;
worker->fd = ret;
*_worker = worker;
return ret;
git_shutdown:
libgit_shutdown();
free:
free(worker);
return ret;
}
void worker_destroy(struct worker *worker)
{
log("Shutting down\n");
log_errno_if(close(worker->fd), "close");
libgit_shutdown();
free(worker);
}
static int msg_send_new_worker(const struct worker *worker)
{
static const char *argv[] = {CMD_NEW_WORKER, NULL};
struct msg *msg = NULL;
int ret = 0;
ret = msg_from_argv(&msg, argv);
if (ret < 0)
return ret;
ret = msg_send(worker->fd, msg);
msg_free(msg);
return ret;
}
static int msg_ci_run_do(const char *url, const char *rev, struct proc_output *result)
{
int ret = 0;
ret = ci_run_git_repo(url, rev, result);
if (ret < 0) {
log_err("Run failed with an error\n");
return ret;
}
log("Process exit code: %d\n", result->ec);
log("Process output:\n%s", result->output);
if (!result->output || !result->output_len ||
result->output[result->output_len - 1] != '\n')
log("\n");
return 0;
}
static int msg_ci_run_handler(UNUSED int conn_fd, const struct msg *request, UNUSED void *_worker,
struct msg **response)
{
struct proc_output result;
int ret = 0;
if (msg_get_length(request) != 3) {
log_err("Invalid number of arguments for a message\n");
msg_dump(request);
return -1;
}
const char **words = msg_get_words(request);
proc_output_init(&result);
ret = msg_ci_run_do(words[1], words[2], &result);
proc_output_free(&result);
if (ret < 0)
return ret;
return msg_success(response);
}
static struct cmd_desc cmds[] = {
{CMD_RUN, msg_ci_run_handler},
};
int worker_main(struct worker *worker, UNUSED int argc, UNUSED char *argv[])
{
struct cmd_dispatcher *dispatcher = NULL;
int ret = 0;
ret = signal_install_global_handler();
if (ret < 0)
return ret;
ret = msg_send_new_worker(worker);
if (ret < 0)
return ret;
ret = cmd_dispatcher_create(&dispatcher, cmds, sizeof(cmds) / sizeof(cmds[0]), worker);
if (ret < 0)
return ret;
while (!global_stop_flag) {
struct msg *request = NULL;
log("Waiting for a new command\n");
ret = msg_recv(worker->fd, &request);
if (ret < 0) {
if (errno == EINVAL && global_stop_flag)
ret = 0;
goto dispatcher_destroy;
}
ret = cmd_dispatcher_handle_msg(dispatcher, worker->fd, request);
msg_free(request);
if (ret < 0)
goto dispatcher_destroy;
}
dispatcher_destroy:
cmd_dispatcher_destroy(dispatcher);
return ret;
}
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