X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fprocd.git;a=blobdiff_plain;f=service.c;h=29acc57eef7ff20760864c4a06d07a3a000642cd;hp=360810ea8b20ce3cf06053db10310af17bc950c9;hb=eba428f6672068d819d6296db3f635e6ac5a8be7;hpb=86009b5439a898fa00cc27e675bb7834576be70a diff --git a/service.c b/service.c index 360810e..29acc57 100644 --- a/service.c +++ b/service.c @@ -1,95 +1,31 @@ +/* + * Copyright (C) 2013 Felix Fietkau + * Copyright (C) 2013 John Crispin + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 + * as published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include #include #include "procd.h" #include "service.h" +#include "instance.h" +#include "rcS.h" struct avl_tree services; static struct blob_buf b; static void -start_instance(struct service_instance *in) -{ - in->restart = false; -} - -static void -instance_timeout(struct uloop_timeout *t) -{ - struct service_instance *in; - - in = container_of(t, struct service_instance, timeout); - kill(in->proc.pid, SIGKILL); - uloop_process_delete(&in->proc); - in->proc.cb(&in->proc, -1); -} - -static void -instance_exit(struct uloop_process *p, int ret) -{ - struct service_instance *in; - - in = container_of(p, struct service_instance, proc); - uloop_timeout_cancel(&in->timeout); - if (in->restart) - start_instance(in); -} - -static void -stop_instance(struct service_instance *in, bool restart) -{ - if (!in->proc.pending) - return; - - kill(in->proc.pid, SIGTERM); -} - -static bool -instance_config_changed(struct service_instance *in, struct service_instance *in_new) -{ - int len = blob_pad_len(in->config); - - if (len != blob_pad_len(in_new->config)) - return true; - - if (memcmp(in->config, in_new->config, blob_pad_len(in->config)) != 0) - return true; - - return false; -} - -static bool -update_instance(struct service_instance *in, struct service_instance *in_new) -{ - bool changed = instance_config_changed(in, in_new); - - in->config = in_new->config; - if (!changed) - return false; - - stop_instance(in, true); - return true; -} - -static void -free_instance(struct service_instance *in) -{ - uloop_process_delete(&in->proc); - uloop_timeout_cancel(&in->timeout); - free(in); -} - -static void -init_instance(struct service_instance *in, struct blob_attr *config) -{ - in->config = config; - in->timeout.cb = instance_timeout; - in->proc.cb = instance_exit; -} - -static void service_instance_add(struct service *s, struct blob_attr *attr) { struct service_instance *in; - const char *name = blobmsg_name(attr); if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE) return; @@ -98,8 +34,8 @@ service_instance_add(struct service *s, struct blob_attr *attr) if (!in) return; - init_instance(in, attr); - vlist_add(&s->instances, &in->node, (void *) name); + instance_init(in, s, attr); + vlist_add(&s->instances, &in->node, (void *) in->name); } static void @@ -115,13 +51,16 @@ service_instance_update(struct vlist_tree *tree, struct vlist_node *node_new, in_n = container_of(node_new, struct service_instance, node); if (in_o && in_n) { - update_instance(in_o, in_n); - free_instance(in_n); + DEBUG(1, "Update instance %s::%s\n", in_o->srv->name, in_o->name); + instance_update(in_o, in_n); + instance_free(in_n); } else if (in_o) { - stop_instance(in_o, false); - free_instance(in_o); + DEBUG(1, "Free instance %s::%s\n", in_o->srv->name, in_o->name); + instance_stop(in_o); + instance_free(in_o); } else if (in_n) { - start_instance(in_n); + DEBUG(1, "Create instance %s::%s\n", in_n->srv->name, in_n->name); + instance_start(in_n); } } @@ -129,49 +68,65 @@ static struct service * service_alloc(const char *name) { struct service *s; + char *new_name; + + s = calloc_a(sizeof(*s), &new_name, strlen(name) + 1); + strcpy(new_name, name); - s = calloc(1, sizeof(*s)); vlist_init(&s->instances, avl_strcmp, service_instance_update); s->instances.keep_old = true; + s->name = new_name; + s->avl.key = s->name; return s; } enum { - SERVICE_ATTR_NAME, - SERVICE_ATTR_SCRIPT, - SERVICE_ATTR_INSTANCES, - __SERVICE_ATTR_MAX + SERVICE_SET_NAME, + SERVICE_SET_SCRIPT, + SERVICE_SET_INSTANCES, + SERVICE_SET_TRIGGER, + __SERVICE_SET_MAX }; -static const struct blobmsg_policy service_attrs[__SERVICE_ATTR_MAX] = { - [SERVICE_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, - [SERVICE_ATTR_SCRIPT] = { "script", BLOBMSG_TYPE_STRING }, - [SERVICE_ATTR_INSTANCES] = { "instances", BLOBMSG_TYPE_TABLE }, +static const struct blobmsg_policy service_set_attrs[__SERVICE_SET_MAX] = { + [SERVICE_SET_NAME] = { "name", BLOBMSG_TYPE_STRING }, + [SERVICE_SET_SCRIPT] = { "script", BLOBMSG_TYPE_STRING }, + [SERVICE_SET_INSTANCES] = { "instances", BLOBMSG_TYPE_TABLE }, + [SERVICE_SET_TRIGGER] = { "triggers", BLOBMSG_TYPE_ARRAY }, }; - static int -service_update(struct service *s, struct blob_attr *config, struct blob_attr **tb) +service_update(struct service *s, struct blob_attr *config, struct blob_attr **tb, bool add) { - struct blob_attr *old_config = s->config; struct blob_attr *cur; int rem; - /* only the pointer changes, the content stays the same, - * no avl update necessary */ - s->name = s->avl.key = blobmsg_data(tb[SERVICE_ATTR_NAME]); - s->config = config; + if (s->trigger) { + trigger_del(s); + free(s->trigger); + s->trigger = NULL; + } - if (tb[SERVICE_ATTR_INSTANCES]) { - vlist_update(&s->instances); - blobmsg_for_each_attr(cur, tb[SERVICE_ATTR_INSTANCES], rem) { + if (tb[SERVICE_SET_TRIGGER] && blobmsg_data_len(tb[SERVICE_SET_TRIGGER])) { + s->trigger = malloc(blob_pad_len(tb[SERVICE_SET_TRIGGER])); + if (!s->trigger) + return -1; + memcpy(s->trigger, tb[SERVICE_SET_TRIGGER], blob_pad_len(tb[SERVICE_SET_TRIGGER])); + trigger_add(s->trigger, s); + } + + if (tb[SERVICE_SET_INSTANCES]) { + if (!add) + vlist_update(&s->instances); + blobmsg_for_each_attr(cur, tb[SERVICE_SET_INSTANCES], rem) { service_instance_add(s, cur); } - vlist_flush(&s->instances); + if (!add) + vlist_flush(&s->instances); } - free(old_config); + rc(s->name, "running"); return 0; } @@ -181,25 +136,64 @@ service_delete(struct service *s) { vlist_flush_all(&s->instances); avl_delete(&services, &s->avl); - free(s->config); + trigger_del(s); + s->trigger = NULL; + free(s->trigger); free(s); } +enum { + SERVICE_ATTR_NAME, + __SERVICE_ATTR_MAX, +}; + +static const struct blobmsg_policy service_attrs[__SERVICE_ATTR_MAX] = { + [SERVICE_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, +}; + +enum { + SERVICE_DEL_ATTR_NAME, + SERVICE_DEL_ATTR_INSTANCE, + __SERVICE_DEL_ATTR_MAX, +}; + +static const struct blobmsg_policy service_del_attrs[__SERVICE_DEL_ATTR_MAX] = { + [SERVICE_DEL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING }, + [SERVICE_DEL_ATTR_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING }, +}; + +enum { + SERVICE_LIST_ATTR_VERBOSE, + __SERVICE_LIST_ATTR_MAX, +}; + +static const struct blobmsg_policy service_list_attrs[__SERVICE_LIST_ATTR_MAX] = { + [SERVICE_LIST_ATTR_VERBOSE] = { "verbose", BLOBMSG_TYPE_BOOL }, +}; + +enum { + EVENT_TYPE, + EVENT_DATA, + __EVENT_MAX +}; + +static const struct blobmsg_policy event_policy[__EVENT_MAX] = { + [EVENT_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING }, + [EVENT_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE }, +}; + static int service_handle_set(struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg) { - struct blob_attr *tb[__SERVICE_ATTR_MAX], *cur; + struct blob_attr *tb[__SERVICE_SET_MAX], *cur; struct service *s = NULL; const char *name; int ret = UBUS_STATUS_INVALID_ARGUMENT; + bool add = !strcmp(method, "add"); - msg = blob_memdup(msg); - if (!msg) - return UBUS_STATUS_UNKNOWN_ERROR; - - blobmsg_parse(service_attrs, __SERVICE_ATTR_MAX, tb, blob_data(msg), blob_len(msg)); + blobmsg_parse(service_set_attrs, __SERVICE_SET_MAX, tb, blob_data(msg), blob_len(msg)); cur = tb[SERVICE_ATTR_NAME]; if (!cur) goto free; @@ -207,14 +201,17 @@ service_handle_set(struct ubus_context *ctx, struct ubus_object *obj, name = blobmsg_data(cur); s = avl_find_element(&services, name, s, avl); - if (s) - return service_update(s, msg, tb); + if (s) { + DEBUG(1, "Update service %s\n", name); + return service_update(s, msg, tb, add); + } + DEBUG(1, "Create service %s\n", name); s = service_alloc(name); if (!s) return UBUS_STATUS_UNKNOWN_ERROR; - ret = service_update(s, msg, tb); + ret = service_update(s, msg, tb, add); if (ret) goto free; @@ -227,65 +224,140 @@ free: return ret; } +static void +service_dump(struct service *s, int verbose) +{ + struct service_instance *in; + void *c, *i; + + c = blobmsg_open_table(&b, s->name); + + if (avl_is_empty(&s->instances.avl)) { + blobmsg_close_table(&b, c); + return; + } + + i = blobmsg_open_table(&b, "instances"); + vlist_for_each_element(&s->instances, in, node) + instance_dump(&b, in, verbose); + blobmsg_close_table(&b, i); + if (verbose && s->trigger) + blobmsg_add_blob(&b, s->trigger); + blobmsg_close_table(&b, c); +} + static int service_handle_list(struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg) { + struct blob_attr *tb[__SERVICE_LIST_ATTR_MAX]; struct service *s; + int verbose = 0; - blob_buf_init(&b, 0); - avl_for_each_element(&services, s, avl) { - void *c; + blobmsg_parse(service_list_attrs, __SERVICE_LIST_ATTR_MAX, tb, blob_data(msg), blob_len(msg)); - c = blobmsg_open_table(&b, s->name); - blobmsg_close_table(&b, c); - } + if (tb[SERVICE_LIST_ATTR_VERBOSE] && blobmsg_get_bool(tb[SERVICE_LIST_ATTR_VERBOSE])) + verbose = 1; + + blob_buf_init(&b, 0); + avl_for_each_element(&services, s, avl) + service_dump(s, verbose); ubus_send_reply(ctx, req, b.head); return 0; } -enum { - SERVICE_DEL_NAME, - __SERVICE_DEL_MAX, -}; - -static const struct blobmsg_policy service_del_attrs[__SERVICE_DEL_MAX] = { - [SERVICE_DEL_NAME] = { "name", BLOBMSG_TYPE_STRING }, -}; - - static int service_handle_delete(struct ubus_context *ctx, struct ubus_object *obj, struct ubus_request_data *req, const char *method, struct blob_attr *msg) { - struct blob_attr *tb[__SERVICE_DEL_MAX], *cur; - struct service *s, *tmp; + struct blob_attr *tb[__SERVICE_DEL_ATTR_MAX], *cur; + struct service *s; + struct service_instance *in; - blobmsg_parse(service_del_attrs, __SERVICE_DEL_MAX, tb, blob_data(msg), blob_len(msg)); + blobmsg_parse(service_del_attrs, __SERVICE_DEL_ATTR_MAX, tb, blob_data(msg), blob_len(msg)); - cur = tb[SERVICE_ATTR_NAME]; + cur = tb[SERVICE_DEL_ATTR_NAME]; + if (!cur) + return UBUS_STATUS_NOT_FOUND; + + s = avl_find_element(&services, blobmsg_data(cur), s, avl); + if (!s) + return UBUS_STATUS_NOT_FOUND; + + cur = tb[SERVICE_DEL_ATTR_INSTANCE]; if (!cur) { - avl_for_each_element_safe(&services, s, avl, tmp) - service_delete(s); + service_delete(s); return 0; } + in = vlist_find(&s->instances, blobmsg_data(cur), in, node); + if (!in) { + ERROR("instance %s not found\n", (char *) blobmsg_data(cur)); + return UBUS_STATUS_NOT_FOUND; + } + + vlist_delete(&s->instances, &in->node); + + return 0; +} + +static int +service_handle_update(struct ubus_context *ctx, struct ubus_object *obj, + struct ubus_request_data *req, const char *method, + struct blob_attr *msg) +{ + struct blob_attr *tb[__SERVICE_ATTR_MAX], *cur; + struct service *s; + + blobmsg_parse(service_attrs, __SERVICE_ATTR_MAX, tb, blob_data(msg), blob_len(msg)); + + cur = tb[SERVICE_ATTR_NAME]; + if (!cur) + return UBUS_STATUS_INVALID_ARGUMENT; + s = avl_find_element(&services, blobmsg_data(cur), s, avl); if (!s) return UBUS_STATUS_NOT_FOUND; - service_delete(s); + if (!strcmp(method, "update_start")) + vlist_update(&s->instances); + else + vlist_flush(&s->instances); + + return 0; +} + +static int +service_handle_event(struct ubus_context *ctx, struct ubus_object *obj, + struct ubus_request_data *req, const char *method, + struct blob_attr *msg) +{ + struct blob_attr *tb[__EVENT_MAX]; + + if (!msg) + return UBUS_STATUS_INVALID_ARGUMENT; + + blobmsg_parse(event_policy, __EVENT_MAX, tb, blob_data(msg), blob_len(msg)); + if (!tb[EVENT_TYPE] || !tb[EVENT_DATA]) + return UBUS_STATUS_INVALID_ARGUMENT; + + trigger_event(blobmsg_get_string(tb[EVENT_TYPE]), tb[EVENT_DATA]); + return 0; } static struct ubus_method main_object_methods[] = { - { .name = "list", .handler = service_handle_list }, - { .name = "set", .handler = service_handle_set }, - { .name = "delete", .handler = service_handle_delete }, + UBUS_METHOD("set", service_handle_set, service_set_attrs), + UBUS_METHOD("add", service_handle_set, service_set_attrs), + UBUS_METHOD("list", service_handle_list, service_attrs), + UBUS_METHOD("delete", service_handle_delete, service_del_attrs), + UBUS_METHOD("update_start", service_handle_update, service_attrs), + UBUS_METHOD("update_complete", service_handle_update, service_attrs), + UBUS_METHOD("event", service_handle_event, event_policy), }; static struct ubus_object_type main_object_type = @@ -298,7 +370,7 @@ static struct ubus_object main_object = { .n_methods = ARRAY_SIZE(main_object_methods), }; -void procd_init_service(struct ubus_context *ctx) +void ubus_init_service(struct ubus_context *ctx) { avl_init(&services, avl_strcmp, false, NULL); ubus_add_object(ctx, &main_object);