Added explain functionality.
Uses json format with jsoncpp as a parser. Then show it in a QTreeView. Shows inclusive/exclusive times like explain.despesz does. Also a similar coloring scheme as applied.
This commit is contained in:
Eelke Klein
parent
0d30dc9080
commit
8af6bc4ac5
14 changed files with 9089 additions and 33 deletions
144
mainwindow.cpp
144
mainwindow.cpp
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@ -2,9 +2,13 @@
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#include "ui_mainwindow.h"
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#include "QueryResultModel.h"
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#include "QueryExplainModel.h"
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#include "sqlhighlighter.h"
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#include <QTextTable>
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#include <windows.h>
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#include "json/json.h"
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#include "explaintreemodelitem.h"
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//#include <thread>
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namespace pg = Pgsql;
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@ -23,7 +27,8 @@ const char * test_query =
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MainWindow::MainWindow(QWidget *parent) :
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QMainWindow(parent),
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ui(new Ui::MainWindow)
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ui(new Ui::MainWindow),
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queryCancel(nullptr)
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{
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ui->setupUi(this);
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@ -44,6 +49,11 @@ MainWindow::MainWindow(QWidget *parent) :
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action = ui->mainToolBar->addAction("execute");
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connect(action, &QAction::triggered, this, &MainWindow::performQuery);
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action = ui->mainToolBar->addAction("explain");
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connect(action, &QAction::triggered, this, &MainWindow::performExplain);
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action = ui->mainToolBar->addAction("cancel");
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connect(action, &QAction::triggered, this, &MainWindow::cancel_query);
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}
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MainWindow::~MainWindow()
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@ -78,6 +88,8 @@ void MainWindow::socket_activate_connect(int )
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if (connectingState.poll_state == PGRES_POLLING_OK) {
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connection->setNoticeReceiver(
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std::bind(&MainWindow::processNotice, this, std::placeholders::_1));
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statusBar()->showMessage(tr("Connected"));
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connectingState.notifier.reset();
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}
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@ -102,6 +114,9 @@ void MainWindow::performQuery()
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{
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ui->ResultView->setModel(nullptr);
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resultModel.reset();
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ui->messagesEdit->clear();
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queryCancel = std::move(connection->getCancel());
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QString command = ui->queryEdit->toPlainText();
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queryFuture = std::async(std::launch::async, [this,command]()-> Pgsql::Result
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@ -115,12 +130,129 @@ void MainWindow::performQuery()
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void MainWindow::query_ready()
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{
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pg::Result dbres(std::move(queryFuture.get()));
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if (dbres.resultStatus() == PGRES_TUPLES_OK) {
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resultModel.reset(new QueryResultModel(nullptr , std::move(dbres)));
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ui->ResultView->setModel(resultModel.get());
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if (dbres) {
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auto st = dbres.resultStatus();
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if (st == PGRES_TUPLES_OK) {
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resultModel.reset(new QueryResultModel(nullptr , std::move(dbres)));
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ui->ResultView->setModel(resultModel.get());
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statusBar()->showMessage(tr("Query ready."));
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}
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else {
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if (st == PGRES_EMPTY_QUERY) {
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statusBar()->showMessage(tr("Empty query."));
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}
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else if (st == PGRES_COMMAND_OK) {
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statusBar()->showMessage(tr("Command OK."));
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}
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else if (st == PGRES_COPY_OUT) {
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statusBar()->showMessage(tr("COPY OUT."));
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}
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else if (st == PGRES_COPY_IN) {
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statusBar()->showMessage(tr("COPY IN."));
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}
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else if (st == PGRES_BAD_RESPONSE) {
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statusBar()->showMessage(tr("BEAD RESPONSE."));
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}
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else if (st == PGRES_NONFATAL_ERROR) {
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statusBar()->showMessage(tr("NON FATAL ERROR."));
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}
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else if (st == PGRES_FATAL_ERROR) {
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statusBar()->showMessage(tr("FATAL ERROR."));
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}
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else if (st == PGRES_COPY_BOTH) {
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statusBar()->showMessage(tr("COPY BOTH shouldn't happen is for replication."));
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}
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else if (st == PGRES_SINGLE_TUPLE) {
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statusBar()->showMessage(tr("SINGLE TUPLE result."));
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}
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else {
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statusBar()->showMessage(tr("No tuples returned, possibly an error..."));
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}
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receiveNotice(dbres.diagDetails());
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}
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}
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else {
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statusBar()->showMessage(tr("No tuples returned, possibly an error..."));
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statusBar()->showMessage(tr("Query cancelled."));
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}
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}
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void MainWindow::performExplain()
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{
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ui->ResultView->setModel(nullptr);
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resultModel.reset();
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ui->messagesEdit->clear();
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queryCancel = std::move(connection->getCancel());
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QString command = "EXPLAIN (ANALYZE, VERBOSE, BUFFERS, FORMAT JSON) ";
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command += ui->queryEdit->toPlainText();
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explainFuture = std::async(std::launch::async, [this,command]()-> std::unique_ptr<ExplainRoot>
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{
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std::unique_ptr<ExplainRoot> explain;
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auto res = connection->query(command);
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if (res.getCols() == 1 && res.getRows() == 1) {
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std::string s = res.getVal(0, 0);
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Json::Value root; // will contains the root value after parsing.
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Json::Reader reader;
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bool parsingSuccessful = reader.parse(s, root);
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if (parsingSuccessful) {
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explain = ExplainRoot::createFromJson(root);
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}
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}
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QMetaObject::invokeMethod(this, "explain_ready", Qt::QueuedConnection); // queues on main thread
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return explain;
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});
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}
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void MainWindow::explain_ready()
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{
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std::unique_ptr<ExplainRoot> explain(explainFuture.get());
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if (explain) {
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explainModel.reset(new QueryExplainModel(nullptr, std::move(explain)));
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ui->explainTreeView->setModel(explainModel.get());
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ui->explainTreeView->expandAll();
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ui->explainTreeView->setColumnWidth(0, 200);
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ui->explainTreeView->setColumnWidth(1, 80);
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ui->explainTreeView->setColumnWidth(2, 80);
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ui->explainTreeView->setColumnWidth(3, 80);
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ui->explainTreeView->setColumnWidth(4, 80);
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ui->explainTreeView->setColumnWidth(5, 80);
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ui->explainTreeView->setColumnWidth(6, 600);
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statusBar()->showMessage(tr("Explain ready."));
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}
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else {
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statusBar()->showMessage(tr("Explain failed."));
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}
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}
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void MainWindow::cancel_query()
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{
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queryCancel.cancel();
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}
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void MainWindow::processNotice(const PGresult *result)
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{
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qRegisterMetaType<Pgsql::ErrorDetails>("Pgsql::ErrorDetails");
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pg::ErrorDetails details = pg::ErrorDetails::createErrorDetailsFromPGresult(result);
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QMetaObject::invokeMethod(this, "receiveNotice", Qt::AutoConnection, Q_ARG(Pgsql::ErrorDetails, details)); // queues on main thread
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}
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void MainWindow::receiveNotice(Pgsql::ErrorDetails notice)
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{
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QTextCursor cursor = ui->messagesEdit->textCursor();
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cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor);
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// QString msg;
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// cursor.insertText("TEST\r\n");
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QTextTable *table = cursor.insertTable(4, 2);
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if (table) {
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table->cellAt(1, 0).firstCursorPosition().insertText("State");
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table->cellAt(1, 1).firstCursorPosition().insertText(QString::fromStdString(notice.state));
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table->cellAt(2, 0).firstCursorPosition().insertText("Primary");
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table->cellAt(2, 1).firstCursorPosition().insertText(QString::fromStdString(notice.messagePrimary));
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table->cellAt(3, 0).firstCursorPosition().insertText("Detail");
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table->cellAt(3, 1).firstCursorPosition().insertText(QString::fromStdString(notice.messageDetail));
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}
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}
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