Merge pull request #709

62e1dc4 Setttings: blockchain folder location (Jaquee)
9037eed DaemonManager: support dataDir parameter + validator (Jaquee)

main.qml

@@ -405,7 +405,7 @@ ApplicationWindow {
         currentWallet.pauseRefresh();
 
         appWindow.showProcessingSplash(qsTr("Waiting for daemon to start..."))
-        daemonManager.start(flags, persistentSettings.testnet);
+        daemonManager.start(flags, persistentSettings.testnet, persistentSettings.blockchainDataDir);
         persistentSettings.daemonFlags = flags
     }
 
@@ -884,6 +884,7 @@ ApplicationWindow {
         property string daemonUsername: ""
         property string daemonPassword: ""
         property bool transferShowAdvanced: false
+        property string blockchainDataDir: ""
     }
 
     // Information dialog

pages/Settings.qml

@@ -247,11 +247,38 @@ Rectangle {
                 }
             }
 
-
-
         }
 
-        ColumnLayout {
+        RowLayout {
+            id: blockchainFolderRow
+            Label {
+                id: blockchainFolderLabel
+                color: "#4A4949"
+                text: qsTr("Blockchain location") + translationManager.emptyString
+                fontSize: 16
+            }
+            LineEdit {
+                id: blockchainFolder
+                Layout.preferredWidth:  200
+                Layout.fillWidth: true
+                text: persistentSettings.blockchainDataDir
+                placeholderText: qsTr("(optional)") + translationManager.emptyString
+
+                MouseArea {
+                    anchors.fill: parent
+                    onClicked: {
+                        mouse.accepted = false
+                        if(persistentSettings.blockchainDataDir != "")
+                            blockchainFileDialog.folder = "file://" + persistentSettings.blockchainDataDir
+                        blockchainFileDialog.open()
+                        blockchainFolder.focus = true
+                    }
+                }
+
+            }
+        }
+
+        RowLayout {
             id: daemonFlagsRow
             Label {
                 id: daemonFlagsLabel
@@ -540,6 +567,62 @@ Rectangle {
         }
     }
 
+    // Choose blockchain folder
+    FileDialog {
+        id: blockchainFileDialog
+        title: qsTr("Please choose a folder") + translationManager.emptyString;
+        selectFolder: true
+        folder: "file://" + persistentSettings.blockchainDataDir
+
+        onAccepted: {
+            var dataDir = walletManager.urlToLocalPath(blockchainFileDialog.fileUrl)
+            var validator = daemonManager.validateDataDir(dataDir);
+            if(!validator.valid) {
+
+                confirmationDialog.title = qsTr("Warning") + translationManager.emptyString;
+                confirmationDialog.text = "";
+                if(validator.readOnly) {
+                    confirmationDialog.text  += qsTr("Error: Filesystem is read only") + "\n\n"                  
+                }
+                
+                if(validator.storageAvailable < 20) {
+                    confirmationDialog.text  += qsTr("Warning: There's only %1 GB available on the device. Blockchain requires ~%2 GB of data.").arg(validator.storageAvailable).arg(15) + "\n\n"     
+                } else {
+                    confirmationDialog.text  += qsTr("Note: There's %1 GB available on the device. Blockchain requires ~%2 GB of data.").arg(validator.storageAvailable).arg(15) + "\n\n"
+                }
+                
+                if(!validator.lmdbExists) {
+                    confirmationDialog.text  += qsTr("Note: lmdb folder not found. A new folder will be created.") + "\n\n" 
+                }
+   
+
+                confirmationDialog.icon = StandardIcon.Question
+                confirmationDialog.cancelText = qsTr("Cancel")
+
+                // Continue
+                confirmationDialog.onAcceptedCallback = function() {
+                    persistentSettings.blockchainDataDir = dataDir
+                }
+
+                // Cancel
+                confirmationDialog.onRejectedCallback = function() {
+                };
+
+                confirmationDialog.open()
+            } else {
+                persistentSettings.blockchainDataDir = dataDir
+            }
+
+            delete validator;
+
+
+        }
+        onRejected: {
+            console.log("data dir selection canceled")
+        }
+
+    }
+
     // fires on every page load
     function onPageCompleted() {
         console.log("Settings page loaded");

src/daemon/DaemonManager.cpp

@@ -8,6 +8,10 @@
 #include <QApplication>
 #include <QProcess>
 #include <QTime>
+#include <QStorageInfo>
+#include <QVariantMap>
+#include <QVariant>
+#include <QMap>
 
 namespace {
     static const int DAEMON_START_TIMEOUT_SECONDS = 30;
@@ -28,7 +32,7 @@ DaemonManager *DaemonManager::instance(const QStringList *args)
     return m_instance;
 }
 
-bool DaemonManager::start(const QString &flags, bool testnet)
+bool DaemonManager::start(const QString &flags, bool testnet, const QString &dataDir)
 {
     // prepare command line arguments and pass to monerod
     QStringList arguments;
@@ -54,8 +58,19 @@ bool DaemonManager::start(const QString &flags, bool testnet)
             arguments << str;
     }
 
+    // Custom data-dir
+    if(!dataDir.isEmpty()) {
+        if(testnet)
+            arguments << "--testnet-data-dir";
+        else
+            arguments << "--data-dir";
+        arguments << dataDir;
+    }
+
     arguments << "--check-updates" << "disabled";
 
+
+
     qDebug() << "starting monerod " + m_monerod;
     qDebug() << "With command line arguments " << arguments;
 
@@ -236,6 +251,44 @@ void DaemonManager::exit()
     m_app_exit = true;
 }
 
+QVariantMap DaemonManager::validateDataDir(const QString &dataDir) const
+{
+    QVariantMap result;
+    bool valid = true;
+    bool readOnly = false;
+    int  storageAvailable = 0;
+    bool lmdbExists = true;
+
+    QStorageInfo storage(dataDir);
+    if (storage.isValid() && storage.isReady()) {
+        if (storage.isReadOnly()) {
+            readOnly = true;
+            valid = false;
+        }
+
+        // Make sure there is 20GB storage available
+        storageAvailable = storage.bytesAvailable()/1000/1000/1000;
+        if (storageAvailable < 20) {
+            valid = false;
+        }
+    } else {
+        valid = false;
+    }
+
+
+    if (!QDir(dataDir+"/lmdb").exists()) {
+        lmdbExists = false;
+        valid = false;
+    }
+
+    result.insert("valid", valid);
+    result.insert("lmdbExists", lmdbExists);
+    result.insert("readOnly", readOnly);
+    result.insert("storageAvailable", storageAvailable);
+
+    return result;
+}
+
 DaemonManager::DaemonManager(QObject *parent)
     : QObject(parent)
 {

src/daemon/DaemonManager.h

@@ -4,6 +4,7 @@
 #include <QObject>
 #include <QUrl>
 #include <QProcess>
+#include <QVariantMap>
 
 class DaemonManager : public QObject
 {
@@ -13,7 +14,7 @@ public:
 
     static DaemonManager * instance(const QStringList *args);
 
-    Q_INVOKABLE bool start(const QString &flags, bool testnet);
+    Q_INVOKABLE bool start(const QString &flags, bool testnet, const QString &dataDir = "");
     Q_INVOKABLE bool stop(bool testnet);
 
     // return true if daemon process is started
@@ -21,6 +22,7 @@ public:
     // Send daemon command from qml and prints output in console window.
     Q_INVOKABLE bool sendCommand(const QString &cmd, bool testnet) const;
     Q_INVOKABLE void exit();
+    Q_INVOKABLE QVariantMap validateDataDir(const QString &dataDir) const;
 
 private: