完成除数据查询前端功能的EDataCapture开发

app/EDataCapture/EDataCapture.php

@@ -2,7 +2,31 @@
 namespace EdgeManager\EDataCapture;
 
 class EDataCapture {
+    // 我不主张在构造函数内实现类型检查，因为在请求过于密集、记录较多时会严重影响性能
+    // 请使用SCADA系统的开发人员自觉遵守文档内规范
+    function __construct(
+        protected $dbconn,
+        protected $post = NULL,
+        protected $get = NULL
+    ) {}
+
     private function set_data() {
-        
+        foreach (array_chunk($this -> post -> param, 6507524, true) as $chunk) {
+            $sql_cmd[] = [sprintf(
+                "INSERT INTO hf_mes_scada_data_capture_node_data_%s",
+                $chunk[0] -> working_subclass
+            )];
+            foreach ($chunk as $row) {
+                $sql_cmd[] = sprintf(
+                    "(code, v_%s, device_code, batch) VALUES('%s', %s, %s, %s)",
+                    $row -> type,
+                    $row -> code,
+                    $row -> value,
+                    $row -> device_code ?? NULL,
+                    $row -> batch ?? NULL
+                );
+            }
+        return pg_query($this -> dbconn, implode(' ', $sql_cmd));
+        }
     }
-}
+}

app/EDataCapture/ENodeConfigure.php

@@ -9,11 +9,20 @@ class ENodeConfigure {
     ) {}
 
     function add_node() {
-        $table_name = "hf_mes_scada_data_capture_node_data_" . $this -> post['process_code'];
+        $exists = pg_query(sprintf(
+            "SELECT EXISTS(
+                SELECT 1 FROM hf_mes_scada_data_capture_node_configure WHERE code='%s'
+            )", $this -> post['code']
+        ));
+        if (pg_fetch_assoc($exists)['exists'] == 't') {
+            return "REPLICATED";
+        }
+
+        $table_name = "hf_mes_scada_data_capture_node_data_" . $this -> post['working_subclass'];
 
         pg_query($this -> dbconn, "BEGIN");
-        $res1 = pg_query($this -> dbconn, sprintf(
-            "CREATE TABLE IF NOT EXISTS %s(
+        $res[] = pg_query($this -> dbconn, sprintf(
+            "CREATE TABLE IF NOT EXISTS %s (
                 id serial8,
                 code text references hf_mes_scada_data_capture_node_configure(code),
                 v_string text,
@@ -22,35 +31,70 @@ class ENodeConfigure {
                 v_bool bool,
                 device_code text,
                 batch text,
-                create_date timestamp
+                capture_time timestamp NOT NULL DEFAULT NOW()
             )", $table_name
         ));
-        $res2 = pg_insert(
+        $res[] = pg_insert(
             $this -> dbconn,
             'hf_mes_scada_data_capture_node_configure',
             $this -> post
         );
-
-        if ($res1 and $res2)
-            pg_query($this -> dbconn, "COMMIT");
-        else
-            pg_query($this -> dbconn, "ROLLBACK");
-        
-        pg_query($this -> dbconn, sprintf("SELECT create_hypertable('%s','create_date')", $table_name));
-        pg_query($this -> dbconn, sprintf(
-            "CREATE INDEX ON %s (v_string, v_int, v_float, v_bool, create_date DESC)
-            WHERE COALESCE(v_string, v_int::text, v_float::text, v_bool::text) IS NOT NULL
+        // 检查一下，如果超表已经有了就不要尝试重复创建了
+        $table_exists = pg_query(sprintf(
+            "SELECT *
+            FROM timescaledb_information.hypertables
+            WHERE hypertable_name = '%s'
             ", $table_name
         ));
+        if (!in_array($table_name, pg_fetch_all_columns($table_exists, 1))) {
+            $res[] = pg_query($this -> dbconn, sprintf("SELECT create_hypertable('%s', 'capture_time')", $table_name));
+            $res[] = pg_query($this -> dbconn, sprintf(
+                "CREATE INDEX ON %s (v_string, v_int, v_float, v_bool, capture_time DESC)
+                WHERE COALESCE(v_string, v_int::text, v_float::text, v_bool::text) IS NOT NULL
+                ", $table_name
+            ));
+        }
+
+        if (in_array(false, $res)) {
+            pg_query($this -> dbconn, "ROLLBACK");
+            return false;
+        } else {
+            pg_query($this -> dbconn, "COMMIT");
+            return true;
+        }
     }
 
     function remove_node() {
+        pg_query($this -> dbconn, "BEGIN");
+        $res[] = pg_delete(
+            $this -> dbconn,
+            'hf_mes_scada_data_capture_node_configure',
+            $this -> post,
+        );
+        $exists = pg_query(sprintf(
+            "SELECT EXISTS(
+                SELECT 1 FROM hf_mes_scada_data_capture_node_configure WHERE code='%s'
+            )", $this -> post['working_subclass']
+        ));
+        if (pg_fetch_assoc($exists)['exists'] == 'f') {
+            $res[] = pg_query(sprintf(
+                "DROP TABLE hf_mes_scada_data_capture_node_data_%s",
+                $this -> post['working_subclass']
+            ));
+        }
         
+        if (in_array(false, $res)) {
+            pg_query($this -> dbconn, "ROLLBACK");
+            return false;
+        } else {
+            pg_query($this -> dbconn, "COMMIT");
+            return true;
+        }
     }
 
     function update_node() {
         return pg_update(
-            $this -> dbconn, 
+            $this -> dbconn,
             'hf_mes_scada_data_capture_node_configure',
             $this -> post,
             ['code' => $this -> post['code']]
@@ -61,4 +105,4 @@ class ENodeConfigure {
         $res = pg_query($this -> dbconn, "SELECT * FROM hf_mes_scada_data_capture_node_configure");
         return pg_fetch_all($res);
     }
-}
+}