Adding upstream version 1.37.1.upstream/1.37.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 383 insertions, 0 deletions

diff --git a/aclk/aclk_query.c b/aclk/aclk_query.c
new file mode 100644
index 0000000..5301c28
--- /dev/null
+++ b/aclk/aclk_query.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "aclk_query.h"
+#include "aclk_stats.h"
+#include "aclk_tx_msgs.h"
+
+#define ACLK_QUERY_THREAD_NAME "ACLK_Query"
+
+#define WEB_HDR_ACCEPT_ENC "Accept-Encoding:"
+
+pthread_cond_t query_cond_wait = PTHREAD_COND_INITIALIZER;
+pthread_mutex_t query_lock_wait = PTHREAD_MUTEX_INITIALIZER;
+#define QUERY_THREAD_LOCK pthread_mutex_lock(&query_lock_wait)
+#define QUERY_THREAD_UNLOCK pthread_mutex_unlock(&query_lock_wait)
+
+static usec_t aclk_web_api_v1_request(RRDHOST *host, struct web_client *w, char *url)
+{
+    usec_t t;
+
+    t = now_monotonic_high_precision_usec();
+    w->response.code = web_client_api_request_v1(host, w, url);
+    t = now_monotonic_high_precision_usec() - t;
+
+    if (aclk_stats_enabled) {
+        ACLK_STATS_LOCK;
+        aclk_metrics_per_sample.cloud_q_process_total += t;
+        aclk_metrics_per_sample.cloud_q_process_count++;
+        if (aclk_metrics_per_sample.cloud_q_process_max < t)
+            aclk_metrics_per_sample.cloud_q_process_max = t;
+        ACLK_STATS_UNLOCK;
+    }
+
+    return t;
+}
+
+static RRDHOST *node_id_2_rrdhost(const char *node_id)
+{
+    int res;
+    uuid_t node_id_bin, host_id_bin;
+
+    RRDHOST *host = find_host_by_node_id((char *)node_id);
+    if (host)
+        return host;
+
+    char host_id[UUID_STR_LEN];
+    if (uuid_parse(node_id, node_id_bin)) {
+        error("Couldn't parse UUID %s", node_id);
+        return NULL;
+    }
+    if ((res = get_host_id(&node_id_bin, &host_id_bin))) {
+        error("node not found rc=%d", res);
+        return NULL;
+    }
+    uuid_unparse_lower(host_id_bin, host_id);
+    return rrdhost_find_by_guid(host_id);
+}
+
+#define NODE_ID_QUERY "/node/"
+// TODO this function should be quarantied and written nicely
+// lots of skeletons from initial ACLK Legacy impl.
+// quick and dirty from the start
+static int http_api_v2(struct aclk_query_thread *query_thr, aclk_query_t query)
+{
+    int retval = 0;
+    usec_t t;
+    BUFFER *local_buffer = NULL;
+    BUFFER *log_buffer = buffer_create(NETDATA_WEB_REQUEST_URL_SIZE);
+    RRDHOST *query_host = localhost;
+
+#ifdef NETDATA_WITH_ZLIB
+    int z_ret;
+    BUFFER *z_buffer = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE);
+    char *start, *end;
+#endif
+
+    struct web_client *w = (struct web_client *)callocz(1, sizeof(struct web_client));
+    w->response.data = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE);
+    w->response.header = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
+    w->response.header_output = buffer_create(NETDATA_WEB_RESPONSE_HEADER_SIZE);
+    strcpy(w->origin, "*"); // Simulate web_client_create_on_fd()
+    w->cookie1[0] = 0;      // Simulate web_client_create_on_fd()
+    w->cookie2[0] = 0;      // Simulate web_client_create_on_fd()
+    w->acl = WEB_CLIENT_ACL_ACLK;
+
+    buffer_strcat(log_buffer, query->data.http_api_v2.query);
+    size_t size = 0;
+    size_t sent = 0;
+    w->tv_in = query->created_tv;
+    now_realtime_timeval(&w->tv_ready);
+
+    if (query->timeout) {
+        int in_queue = (int) (dt_usec(&w->tv_in, &w->tv_ready) / 1000);
+        if (in_queue > query->timeout) {
+            log_access("QUERY CANCELED: QUEUE TIME EXCEEDED %d ms (LIMIT %d ms)", in_queue, query->timeout);
+            retval = 1;
+            w->response.code = HTTP_RESP_BACKEND_FETCH_FAILED;
+            aclk_http_msg_v2_err(query_thr->client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_SND_TIMEOUT, CLOUD_EMSG_SND_TIMEOUT, NULL, 0);
+            goto cleanup;
+        }
+    }
+
+    if (!strncmp(query->data.http_api_v2.query, NODE_ID_QUERY, strlen(NODE_ID_QUERY))) {
+        char *node_uuid = query->data.http_api_v2.query + strlen(NODE_ID_QUERY);
+        char nodeid[UUID_STR_LEN];
+        if (strlen(node_uuid) < (UUID_STR_LEN - 1)) {
+            error_report(CLOUD_EMSG_MALFORMED_NODE_ID);
+            retval = 1;
+            w->response.code = 404;
+            aclk_http_msg_v2_err(query_thr->client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_MALFORMED_NODE_ID, CLOUD_EMSG_MALFORMED_NODE_ID, NULL, 0);
+            goto cleanup;
+        }
+        strncpyz(nodeid, node_uuid, UUID_STR_LEN - 1);
+
+        query_host = node_id_2_rrdhost(nodeid);
+        if (!query_host) {
+            error_report("Host with node_id \"%s\" not found! Returning 404 to Cloud!", nodeid);
+            retval = 1;
+            w->response.code = 404;
+            aclk_http_msg_v2_err(query_thr->client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_NODE_NOT_FOUND, CLOUD_EMSG_NODE_NOT_FOUND, NULL, 0);
+            goto cleanup;
+        }
+    }
+
+    char *mysep = strchr(query->data.http_api_v2.query, '?');
+    if (mysep) {
+        url_decode_r(w->decoded_query_string, mysep, NETDATA_WEB_REQUEST_URL_SIZE + 1);
+        *mysep = '\0';
+    } else
+        url_decode_r(w->decoded_query_string, query->data.http_api_v2.query, NETDATA_WEB_REQUEST_URL_SIZE + 1);
+
+    mysep = strrchr(query->data.http_api_v2.query, '/');
+
+    if (aclk_stats_enabled) {
+        ACLK_STATS_LOCK;
+        int stat_idx = aclk_cloud_req_http_type_to_idx(mysep ? mysep + 1 : "other");
+        aclk_metrics_per_sample.cloud_req_http_by_type[stat_idx]++;
+        ACLK_STATS_UNLOCK;
+    }
+
+    // execute the query
+    t = aclk_web_api_v1_request(query_host, w, mysep ? mysep + 1 : "noop");
+    size = (w->mode == WEB_CLIENT_MODE_FILECOPY) ? w->response.rlen : w->response.data->len;
+    sent = size;
+
+#ifdef NETDATA_WITH_ZLIB
+    // check if gzip encoding can and should be used
+    if ((start = strstr((char *)query->data.http_api_v2.payload, WEB_HDR_ACCEPT_ENC))) {
+        start += strlen(WEB_HDR_ACCEPT_ENC);
+        end = strstr(start, "\x0D\x0A");
+        start = strstr(start, "gzip");
+
+        if (start && start < end) {
+            w->response.zstream.zalloc = Z_NULL;
+            w->response.zstream.zfree = Z_NULL;
+            w->response.zstream.opaque = Z_NULL;
+            if(deflateInit2(&w->response.zstream, web_gzip_level, Z_DEFLATED, 15 + 16, 8, web_gzip_strategy) == Z_OK) {
+                w->response.zinitialized = 1;
+                w->response.zoutput = 1;
+            } else
+                error("Failed to initialize zlib. Proceeding without compression.");
+        }
+    }
+
+    if (w->response.data->len && w->response.zinitialized) {
+        w->response.zstream.next_in = (Bytef *)w->response.data->buffer;
+        w->response.zstream.avail_in = w->response.data->len;
+        do {
+            w->response.zstream.avail_out = NETDATA_WEB_RESPONSE_ZLIB_CHUNK_SIZE;
+            w->response.zstream.next_out = w->response.zbuffer;
+            z_ret = deflate(&w->response.zstream, Z_FINISH);
+            if(z_ret < 0) {
+                if(w->response.zstream.msg)
+                    error("Error compressing body. ZLIB error: \"%s\"", w->response.zstream.msg);
+                else
+                    error("Unknown error during zlib compression.");
+                retval = 1;
+                w->response.code = 500;
+                aclk_http_msg_v2_err(query_thr->client, query->callback_topic, query->msg_id, w->response.code, CLOUD_EC_ZLIB_ERROR, CLOUD_EMSG_ZLIB_ERROR, NULL, 0);
+                goto cleanup;
+            }
+            int bytes_to_cpy = NETDATA_WEB_RESPONSE_ZLIB_CHUNK_SIZE - w->response.zstream.avail_out;
+            buffer_need_bytes(z_buffer, bytes_to_cpy);
+            memcpy(&z_buffer->buffer[z_buffer->len], w->response.zbuffer, bytes_to_cpy);
+            z_buffer->len += bytes_to_cpy;
+        } while(z_ret != Z_STREAM_END);
+        // so that web_client_build_http_header
+        // puts correct content length into header
+        buffer_free(w->response.data);
+        w->response.data = z_buffer;
+        z_buffer = NULL;
+    }
+#endif
+
+    w->response.data->date = w->tv_ready.tv_sec;
+    web_client_build_http_header(w);
+    local_buffer = buffer_create(NETDATA_WEB_RESPONSE_INITIAL_SIZE);
+    local_buffer->contenttype = CT_APPLICATION_JSON;
+
+    buffer_strcat(local_buffer, w->response.header_output->buffer);
+
+    if (w->response.data->len) {
+#ifdef NETDATA_WITH_ZLIB
+        if (w->response.zinitialized) {
+            buffer_need_bytes(local_buffer, w->response.data->len);
+            memcpy(&local_buffer->buffer[local_buffer->len], w->response.data->buffer, w->response.data->len);
+            local_buffer->len += w->response.data->len;
+            sent = sent - size + w->response.data->len;
+        } else {
+#endif
+            buffer_strcat(local_buffer, w->response.data->buffer);
+#ifdef NETDATA_WITH_ZLIB
+        }
+#endif
+    }
+
+    // send msg.
+    aclk_http_msg_v2(query_thr->client, query->callback_topic, query->msg_id, t, query->created, w->response.code, local_buffer->buffer, local_buffer->len);
+
+    struct timeval tv;
+
+cleanup:
+    now_realtime_timeval(&tv);
+    log_access("%llu: %d '[ACLK]:%d' '%s' (sent/all = %zu/%zu bytes %0.0f%%, prep/sent/total = %0.2f/%0.2f/%0.2f ms) %d '%s'",
+        w->id
+        , gettid()
+        , query_thr->idx
+        , "DATA"
+        , sent
+        , size
+        , size > sent ? -(((size - sent) / (double)size) * 100.0) : ((size > 0) ? (((sent - size ) / (double)size) * 100.0) : 0.0)
+        , dt_usec(&w->tv_ready, &w->tv_in) / 1000.0
+        , dt_usec(&tv, &w->tv_ready) / 1000.0
+        , dt_usec(&tv, &w->tv_in) / 1000.0
+        , w->response.code
+        , strip_control_characters((char *)buffer_tostring(log_buffer))
+    );
+
+#ifdef NETDATA_WITH_ZLIB
+    if(w->response.zinitialized)
+        deflateEnd(&w->response.zstream);
+    buffer_free(z_buffer);
+#endif
+    buffer_free(w->response.data);
+    buffer_free(w->response.header);
+    buffer_free(w->response.header_output);
+    freez(w);
+    buffer_free(local_buffer);
+    buffer_free(log_buffer);
+    return retval;
+}
+
+static int send_bin_msg(struct aclk_query_thread *query_thr, aclk_query_t query)
+{
+    // this will be simplified when legacy support is removed
+    aclk_send_bin_message_subtopic_pid(query_thr->client, query->data.bin_payload.payload, query->data.bin_payload.size, query->data.bin_payload.topic, query->data.bin_payload.msg_name);
+    return 0;
+}
+
+const char *aclk_query_get_name(aclk_query_type_t qt, int unknown_ok)
+{
+    switch (qt) {
+        case HTTP_API_V2:          return "http_api_request_v2";
+        case REGISTER_NODE:        return "register_node";
+        case NODE_STATE_UPDATE:    return "node_state_update";
+        case CHART_DIMS_UPDATE:    return "chart_and_dim_update";
+        case CHART_CONFIG_UPDATED: return "chart_config_updated";
+        case CHART_RESET:          return "reset_chart_messages";
+        case RETENTION_UPDATED:    return "update_retention_info";
+        case UPDATE_NODE_INFO:     return "update_node_info";
+        case ALARM_LOG_HEALTH:     return "alarm_log_health";
+        case ALARM_PROVIDE_CFG:    return "provide_alarm_config";
+        case ALARM_SNAPSHOT:       return "alarm_snapshot";
+        case UPDATE_NODE_COLLECTORS: return "update_node_collectors";
+        case PROTO_BIN_MESSAGE:    return "generic_binary_proto_message";
+        default:
+            if (!unknown_ok)
+                error_report("Unknown query type used %d", (int) qt);
+            return "unknown";
+    }
+}
+
+static void aclk_query_process_msg(struct aclk_query_thread *query_thr, aclk_query_t query)
+{   
+    if (query->type == UNKNOWN || query->type >= ACLK_QUERY_TYPE_COUNT) {
+        error_report("Unknown query in query queue. %u", query->type);
+        aclk_query_free(query);
+        return;
+    }
+
+    worker_is_busy(query->type);
+    if (query->type == HTTP_API_V2) {
+        debug(D_ACLK, "Processing Queued Message of type: \"http_api_request_v2\"");
+        http_api_v2(query_thr, query);
+    } else {
+        debug(D_ACLK, "Processing Queued Message of type: \"%s\"", query->data.bin_payload.msg_name);
+        send_bin_msg(query_thr, query);
+    }
+
+    if (aclk_stats_enabled) {
+        ACLK_STATS_LOCK;
+        aclk_metrics_per_sample.queries_dispatched++;
+        aclk_queries_per_thread[query_thr->idx]++;
+        aclk_metrics_per_sample.queries_per_type[query->type]++;
+        ACLK_STATS_UNLOCK;
+    }
+
+    aclk_query_free(query);
+
+    worker_is_idle();
+}
+
+/* Processes messages from queue. Compete for work with other threads
+ */
+int aclk_query_process_msgs(struct aclk_query_thread *query_thr)
+{
+    aclk_query_t query;
+    while ((query = aclk_queue_pop()))
+        aclk_query_process_msg(query_thr, query);
+
+    return 0;
+}
+
+static void worker_aclk_register(void) {
+    worker_register("ACLKQUERY");
+    for (int i = 1; i < ACLK_QUERY_TYPE_COUNT; i++) {
+        worker_register_job_name(i, aclk_query_get_name(i, 0));
+    }
+}
+
+/**
+ * Main query processing thread
+ */
+void *aclk_query_main_thread(void *ptr)
+{
+    worker_aclk_register();
+
+    struct aclk_query_thread *query_thr = ptr;
+
+    while (!netdata_exit) {
+        aclk_query_process_msgs(query_thr);
+
+        worker_is_idle();
+        QUERY_THREAD_LOCK;
+        if (unlikely(pthread_cond_wait(&query_cond_wait, &query_lock_wait)))
+            sleep_usec(USEC_PER_SEC * 1);
+        QUERY_THREAD_UNLOCK;
+    }
+
+    worker_unregister();
+    return NULL;
+}
+
+#define TASK_LEN_MAX 22
+void aclk_query_threads_start(struct aclk_query_threads *query_threads, mqtt_wss_client client)
+{
+    info("Starting %d query threads.", query_threads->count);
+
+    char thread_name[TASK_LEN_MAX];
+    query_threads->thread_list = callocz(query_threads->count, sizeof(struct aclk_query_thread));
+    for (int i = 0; i < query_threads->count; i++) {
+        query_threads->thread_list[i].idx = i; //thread needs to know its index for statistics
+
+        if(unlikely(snprintfz(thread_name, TASK_LEN_MAX, "%s_%d", ACLK_QUERY_THREAD_NAME, i) < 0))
+            error("snprintf encoding error");
+        netdata_thread_create(
+            &query_threads->thread_list[i].thread, thread_name, NETDATA_THREAD_OPTION_JOINABLE, aclk_query_main_thread,
+            &query_threads->thread_list[i]);
+
+        query_threads->thread_list[i].client = client;
+    }
+}
+
+void aclk_query_threads_cleanup(struct aclk_query_threads *query_threads)
+{
+    if (query_threads && query_threads->thread_list) {
+        for (int i = 0; i < query_threads->count; i++) {
+            netdata_thread_join(query_threads->thread_list[i].thread, NULL);
+        }
+        freez(query_threads->thread_list);
+    }
+    aclk_queue_lock();
+    aclk_queue_flush();
+}