root / src / com / rackspacecloud / android / ViewLoadBalancerActivity.java @ 157f0be5
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/**
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*
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*/
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package com.rackspacecloud.android; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import org.apache.http.HttpResponse; |
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import android.app.Activity; |
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import android.app.AlertDialog; |
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import android.app.Dialog; |
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import android.content.DialogInterface; |
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import android.content.Intent; |
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import android.graphics.Color; |
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import android.os.AsyncTask; |
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import android.os.Bundle; |
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import android.util.Log; |
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import android.util.TypedValue; |
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import android.view.Menu; |
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import android.view.MenuInflater; |
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import android.view.MenuItem; |
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import android.view.View; |
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import android.view.View.OnClickListener; |
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import android.widget.Button; |
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import android.widget.LinearLayout; |
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import android.widget.TextView; |
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import com.rackspace.cloud.loadbalancer.api.client.LoadBalancer; |
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import com.rackspace.cloud.loadbalancer.api.client.LoadBalancerManager; |
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import com.rackspace.cloud.loadbalancer.api.client.Node; |
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import com.rackspace.cloud.loadbalancer.api.client.VirtualIp; |
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import com.rackspace.cloud.loadbalancer.api.client.http.LoadBalancersException; |
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import com.rackspace.cloud.servers.api.client.CloudServersException; |
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import com.rackspace.cloud.servers.api.client.http.HttpBundle; |
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public class ViewLoadBalancerActivity extends CloudActivity { |
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private static final int EDIT_LOAD_BALANCER_CODE = 184; |
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private static final int EDIT_NODES_CODE = 185; |
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private LoadBalancer loadBalancer;
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private PollLoadBalancerTask pollLoadBalancerTask;
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@Override
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public void onCreate(Bundle savedInstanceState) { |
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super.onCreate(savedInstanceState);
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loadBalancer = (LoadBalancer) this.getIntent().getExtras().get("loadBalancer"); |
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setContentView(R.layout.view_loadbalancer); |
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restoreState(savedInstanceState); |
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} |
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@Override
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protected void onSaveInstanceState(Bundle outState) { |
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super.onSaveInstanceState(outState);
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outState.putSerializable("loadBalancer", loadBalancer);
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} |
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protected void restoreState(Bundle state) { |
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super.restoreState(state);
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if (state != null && state.containsKey("loadBalancer") && state.getSerializable("loadBalancer") != null) { |
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loadBalancer = (LoadBalancer) state.getSerializable("loadBalancer");
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loadLoadBalancerData(); |
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setUpButtons(); |
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} |
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else{
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new LoadLoadBalancerTask().execute((Void[]) null); |
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} |
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} |
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@Override
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protected void onDestroy(){ |
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super.onDestroy();
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//need to cancel pollLoadBalancerTask so it
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//does not keep polling in a new activity
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if(pollLoadBalancerTask != null){ |
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pollLoadBalancerTask.cancel(true);
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} |
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} |
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private void setupButton(int resourceId, OnClickListener onClickListener) { |
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Button button = (Button) findViewById(resourceId); |
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button.setOnClickListener(onClickListener); |
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} |
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//change the text on the button depending
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//on the state of Connection Logging
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private void setLogButtonText(){ |
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Button logs = (Button)findViewById(R.id.connection_log_button); |
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String loggingEnabled = loadBalancer.getIsConnectionLoggingEnabled();
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if(loggingEnabled != null && loggingEnabled.equals("true")){ |
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logs.setText("Disable Logs");
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} else {
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logs.setText("Enable Logs");
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} |
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} |
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//change the text on the button depending
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//on the state of Session Persistence
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private void setSessionButtonText(){ |
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Button sessionPersistence = (Button)findViewById(R.id.session_persistence_button); |
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//session persistence is null if it is off
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if(loadBalancer.getSessionPersistence() != null){ |
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sessionPersistence.setText("Disable Session Persistence");
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} else {
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sessionPersistence.setText("Enable Session Persistence");
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} |
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} |
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//if the load balancer state contains DELETE
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//then parts of it may be null, so use a different
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//onClick in that condition
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private void setUpButtons(){ |
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setupButton(R.id.edit_loadbalancer_button, new OnClickListener() {
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@Override
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public void onClick(View v) { |
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if(!loadBalancer.getStatus().contains("DELETE")){ |
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Intent editLoadBalancerIntent = new Intent(getContext(), EditLoadBalancerActivity.class);
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editLoadBalancerIntent.putExtra("loadBalancer", loadBalancer);
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startActivityForResult(editLoadBalancerIntent, EDIT_LOAD_BALANCER_CODE); |
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} else {
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showAlert(loadBalancer.getStatus(), "The load balancer cannot be updated.");
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} |
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} |
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}); |
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setupButton(R.id.delete_loadbalancer_button, new OnClickListener() {
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@Override
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public void onClick(View v) { |
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if(!loadBalancer.getStatus().contains("DELETE")){ |
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showDialog(R.id.view_server_delete_button); |
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} else {
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showAlert(loadBalancer.getStatus(), "The load balancer cannot be deleted.");
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} |
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} |
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}); |
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setupButton(R.id.edit_nodes_button, new OnClickListener() {
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@Override
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public void onClick(View v) { |
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if(!loadBalancer.getStatus().contains("DELETE")){ |
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Intent editLoadBalancerIntent = new Intent(getContext(), EditNodesActivity.class);
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editLoadBalancerIntent.putExtra("nodes", loadBalancer.getNodes());
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editLoadBalancerIntent.putExtra("loadBalancer", loadBalancer);
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startActivityForResult(editLoadBalancerIntent, EDIT_NODES_CODE); |
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} else {
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showAlert(loadBalancer.getStatus(), "The nodes cannot be edited.");
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} |
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} |
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}); |
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setupButton(R.id.connection_log_button, new OnClickListener() {
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@Override
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public void onClick(View v) { |
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if(!loadBalancer.getStatus().contains("DELETE")){ |
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showDialog(R.id.connection_log_button); |
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} else {
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showAlert(loadBalancer.getStatus(), "Log settings cannot be edited.");
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} |
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} |
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}); |
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setLogButtonText(); |
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setupButton(R.id.session_persistence_button, new OnClickListener() {
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@Override
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public void onClick(View v) { |
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if(!loadBalancer.getStatus().contains("DELETE")){ |
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if(!loadBalancer.getProtocol().equals("HTTP")){ |
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showAlert("Error", "Session Persistence cannot be enabled for protocols other than HTTP."); |
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} else {
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showDialog(R.id.session_persistence_button); |
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} |
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} else {
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showAlert(loadBalancer.getStatus(), "Session Persistence cannot be edited.");
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} |
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} |
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}); |
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setSessionButtonText(); |
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} |
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@Override
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protected Dialog onCreateDialog(int id) { |
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switch (id) {
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case R.id.view_server_delete_button:
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return new AlertDialog.Builder(ViewLoadBalancerActivity.this) |
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.setIcon(R.drawable.alert_dialog_icon) |
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.setTitle("Delete Load Balancer")
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.setMessage("Are you sure you want to delete the load balancer?")
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.setPositiveButton("Delete", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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new DeleteLoadBalancerTask().execute((Void[]) null); |
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} |
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}) |
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.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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// do nothing
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} |
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}) |
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.create(); |
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case R.id.connection_log_button:
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return new AlertDialog.Builder(ViewLoadBalancerActivity.this) |
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.setIcon(R.drawable.alert_dialog_icon) |
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.setTitle("Disable Logs")
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.setMessage("Are you sure you want to disable logs for this Load Balancer?")
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.setPositiveButton("Enable", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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new SetLoggingTask().execute();
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} |
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}) |
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.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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// do nothing
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} |
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}) |
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.create(); |
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case R.id.session_persistence_button:
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return new AlertDialog.Builder(ViewLoadBalancerActivity.this) |
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.setIcon(R.drawable.alert_dialog_icon) |
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.setTitle("Session Persistence")
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.setMessage("Are you sure you want to disable session persistence for this Load Balancer?")
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.setPositiveButton("Enable", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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new SessionPersistenceTask().execute();
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} |
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}) |
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.setNegativeButton("Cancel", new DialogInterface.OnClickListener() { |
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public void onClick(DialogInterface dialog, int whichButton) { |
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// do nothing
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} |
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}) |
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.create(); |
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} |
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return null; |
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} |
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@Override
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//Need to show different message depending on the state
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//of connection_logs/session_persistence
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protected void onPrepareDialog(int id, Dialog dialog){ |
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switch (id) {
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case R.id.connection_log_button:
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String logTitle;
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String logMessage;
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String logButton;
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if(loadBalancer.getIsConnectionLoggingEnabled().equals("true")){ |
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logTitle = "Disable Logs";
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logMessage = "Are you sure you want to disable logs for this Load Balancer?";
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logButton = "Disable";
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} else {
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logTitle = "Enable Logs";
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logMessage = "Log files will be processed every hour and stored in your Cloud Files account. " +
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"Standard Cloud Files storage and transfer fees will be accessed for the use of this feature." +
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"\n\nAre you sure you want to enable logs for this Load Balancer?";
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logButton = "Enable";
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} |
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((AlertDialog)dialog).setTitle(logTitle); |
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((AlertDialog)dialog).setMessage(logMessage); |
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Button sessionLogButton = ((AlertDialog)dialog).getButton(AlertDialog.BUTTON1);
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sessionLogButton.setText(logButton); |
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sessionLogButton.invalidate(); |
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break;
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case R.id.session_persistence_button:
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String sessionMessage;
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String sessionButton;
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if(loadBalancer.getSessionPersistence() != null){ |
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Log.d("info", "in sessionpersistence != null"); |
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sessionMessage = "Are you sure you want to disable session persistence for this Load Balancer?";
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sessionButton = "Disable";
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} else {
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Log.d("info", "in sessionpersistence == null"); |
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sessionMessage = "Are you sure you want to enable session persistence for this Load Balancer?";
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sessionButton = "Enable";
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} |
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((AlertDialog)dialog).setMessage(sessionMessage); |
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Button sessionPersistButton = ((AlertDialog)dialog).getButton(AlertDialog.BUTTON1);
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sessionPersistButton.setText(sessionButton); |
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sessionPersistButton.invalidate(); |
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break;
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} |
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} |
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//Displays all the load balancer data
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private void loadLoadBalancerData() { |
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if(loadBalancer != null){ |
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/*
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* need to update the text on button if
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* it has changed
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*/
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setLogButtonText(); |
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setSessionButtonText(); |
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TextView name = (TextView) findViewById(R.id.view_name); |
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name.setText(loadBalancer.getName()); |
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TextView id = (TextView) findViewById(R.id.view_lb_id); |
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id.setText(loadBalancer.getId()); |
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TextView protocol = (TextView) findViewById(R.id.view_protocol); |
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protocol.setText(loadBalancer.getProtocol()); |
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TextView port = (TextView) findViewById(R.id.view_port); |
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port.setText(loadBalancer.getPort()); |
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TextView algorithm = (TextView) findViewById(R.id.view_algorithm); |
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algorithm.setText(getPrettyAlgoName(loadBalancer.getAlgorithm())); |
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TextView status = (TextView) findViewById(R.id.view_status); |
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if (!"ACTIVE".equals(loadBalancer.getStatus())) { |
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status.setText(loadBalancer.getStatus()); |
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pollLoadBalancerTask = new PollLoadBalancerTask();
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pollLoadBalancerTask.execute((Void[]) null); |
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} else {
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status.setText(loadBalancer.getStatus()); |
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} |
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status.setText(loadBalancer.getStatus()); |
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TextView connectionLogging = (TextView) findViewById(R.id.view_islogging); |
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String isConnectionLogging = loadBalancer.getIsConnectionLoggingEnabled();
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if(isConnectionLogging != null && isConnectionLogging.equals("true")){ |
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connectionLogging.setText("Enabled");
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} else {
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connectionLogging.setText("Disabled");
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} |
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loadVirutalIpData(); |
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} |
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} |
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private String getPrettyAlgoName(String name){ |
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if(name == null || name.length() == 0){ |
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return ""; |
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} else {
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String result = name.charAt(0) + ""; |
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boolean previousWasSpace = false;; |
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for(int i = 1; i < name.length(); i++){ |
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char curLetter = name.charAt(i);
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if(curLetter == '_'){ |
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result += " ";
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previousWasSpace = true;
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} else {
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if(previousWasSpace){
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result += Character.toUpperCase(curLetter);
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} else {
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result += Character.toLowerCase(curLetter);
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} |
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previousWasSpace = false;
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} |
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} |
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return result;
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} |
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} |
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private void loadVirutalIpData() { |
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int layoutIndex = 0; |
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LinearLayout layout = (LinearLayout) this.findViewById(R.id.vip_addresses);
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layout.removeAllViews(); |
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ArrayList<VirtualIp> virtualIps = loadBalancer.getVirtualIps();
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//maybe null if the lb has been deleted
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if(virtualIps != null){ |
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for (int i = 0; i < virtualIps.size(); i++) { |
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TextView tv = new TextView(this.getBaseContext()); |
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tv.setLayoutParams(((TextView)findViewById(R.id.view_port)).getLayoutParams()); // easy quick styling! :)
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tv.setTypeface(tv.getTypeface(), 1); // 1 == bold |
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tv.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
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tv.setTextColor(Color.WHITE);
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tv.setText(virtualIps.get(i).getAddress()); |
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layout.addView(tv, layoutIndex++); |
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} |
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} |
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loadNodeData(); |
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} |
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private void loadNodeData() { |
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int layoutIndex = 0; // public IPs start here |
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LinearLayout layout = (LinearLayout) this.findViewById(R.id.node_addresses);
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layout.removeAllViews(); |
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ArrayList<Node> nodeIps = loadBalancer.getNodes();
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if(nodeIps == null){ |
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nodeIps = new ArrayList<Node>(); |
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} |
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/*
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* need to sort the addresses because during polling
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* their order can change and the display becomes
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* jumpy
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*/
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ArrayList<String> addresses = new ArrayList<String>(); |
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for(Node n : nodeIps){
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addresses.add(n.getAddress()); |
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} |
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Collections.sort(addresses);
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//may be null if lb has been deleted
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if(nodeIps != null){ |
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for (int i = 0; i < nodeIps.size(); i++) { |
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TextView tv = new TextView(this.getBaseContext()); |
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tv.setLayoutParams(((TextView)findViewById(R.id.view_port)).getLayoutParams()); // easy quick styling! :)
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tv.setTypeface(tv.getTypeface(), 1); // 1 == bold |
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tv.setTextSize(TypedValue.COMPLEX_UNIT_SP, 20);
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tv.setTextColor(Color.WHITE);
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tv.setText(addresses.get(i)); |
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layout.addView(tv, layoutIndex++); |
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} |
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} |
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} |
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|
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//setup menu for when menu button is pressed
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public boolean onCreateOptionsMenu(Menu menu) { |
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super.onCreateOptionsMenu(menu);
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MenuInflater inflater = getMenuInflater(); |
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inflater.inflate(R.menu.view_loadbalancer_menu, menu); |
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return true; |
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} |
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|
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@Override
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public boolean onOptionsItemSelected(MenuItem item) { |
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switch (item.getItemId()) {
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case R.id.refresh_loadbalancer:
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new LoadLoadBalancerTask().execute((Void[]) null); |
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return true; |
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} |
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return false; |
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} |
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|
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@Override
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//have been kicked back from another activity,
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//so refresh the load balancer data
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public void onActivityResult(int requestCode, int resultCode, Intent data) { |
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super.onActivityResult(requestCode, resultCode, data);
|
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if (resultCode == RESULT_OK) {
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new LoadLoadBalancerTask().execute((Void[]) null); |
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} |
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} |
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|
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// HTTP request tasks
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private class PollLoadBalancerTask extends AsyncTask<Void, Void, LoadBalancer> { |
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|
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@Override
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protected LoadBalancer doInBackground(Void... arg0) { |
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if(pollLoadBalancerTask.isCancelled()){
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return null; |
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} |
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try {
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loadBalancer = (new LoadBalancerManager(getContext())).getLoadBalancerById(Integer.parseInt(loadBalancer.getId())); |
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} catch (NumberFormatException e) { |
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// we're polling, so need to show exceptions
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} catch (LoadBalancersException e) {
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// we're polling, so need to show exceptions
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} |
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return loadBalancer;
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} |
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|
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@Override
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protected void onPostExecute(LoadBalancer result) { |
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loadBalancer = result; |
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loadLoadBalancerData(); |
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} |
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} |
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|
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private class LoadLoadBalancerTask extends AsyncTask<Void, Void, LoadBalancer> { |
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|
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private LoadBalancersException exception;
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private String loadBalancerId; |
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|
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protected void onPreExecute() { |
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loadBalancerId = loadBalancer.getId(); |
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/*
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* set to null, so if config change occurs
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* it will be reloaded in onCreate()
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*/
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loadBalancer = null;
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showDialog(); |
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} |
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|
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@Override
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protected LoadBalancer doInBackground(Void... arg0) { |
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LoadBalancer result = null;
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try {
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result = (new LoadBalancerManager(getContext())).getLoadBalancerById(Integer.parseInt(loadBalancerId)); |
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} catch (LoadBalancersException e) {
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exception = e; |
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} |
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return result;
|
| 493 |
} |
| 494 |
|
| 495 |
@Override
|
| 496 |
protected void onPostExecute(LoadBalancer result) { |
| 497 |
hideDialog(); |
| 498 |
if (exception != null) { |
| 499 |
showAlert("Error", exception.getMessage());
|
| 500 |
} |
| 501 |
loadBalancer = result; |
| 502 |
|
| 503 |
setUpButtons(); |
| 504 |
loadLoadBalancerData(); |
| 505 |
} |
| 506 |
} |
| 507 |
|
| 508 |
public class DeleteLoadBalancerTask extends AsyncTask<Void, Void, HttpBundle> { |
| 509 |
|
| 510 |
private CloudServersException exception;
|
| 511 |
|
| 512 |
@Override
|
| 513 |
protected void onPreExecute(){ |
| 514 |
showDialog(); |
| 515 |
} |
| 516 |
|
| 517 |
@Override
|
| 518 |
protected HttpBundle doInBackground(Void... arg0) { |
| 519 |
HttpBundle bundle = null;
|
| 520 |
try {
|
| 521 |
bundle = (new LoadBalancerManager(getContext())).delete(loadBalancer);
|
| 522 |
} catch (CloudServersException e) {
|
| 523 |
exception = e; |
| 524 |
} |
| 525 |
return bundle;
|
| 526 |
} |
| 527 |
|
| 528 |
@Override
|
| 529 |
protected void onPostExecute(HttpBundle bundle) { |
| 530 |
hideDialog(); |
| 531 |
HttpResponse response = bundle.getResponse(); |
| 532 |
if (response != null) { |
| 533 |
int statusCode = response.getStatusLine().getStatusCode();
|
| 534 |
if (statusCode == 202) { |
| 535 |
setResult(Activity.RESULT_OK); |
| 536 |
finish(); |
| 537 |
} else {
|
| 538 |
CloudServersException cse = parseCloudServersException(response); |
| 539 |
if ("".equals(cse.getMessage())) { |
| 540 |
showError("There was a problem deleting your load balancer.", bundle);
|
| 541 |
} else {
|
| 542 |
showError("There was a problem deleting your load balancer: " + cse.getMessage(), bundle);
|
| 543 |
} |
| 544 |
} |
| 545 |
} else if (exception != null) { |
| 546 |
showError("There was a problem deleting your load balancer: " + exception.getMessage(), bundle);
|
| 547 |
} |
| 548 |
} |
| 549 |
} |
| 550 |
|
| 551 |
|
| 552 |
private class SetLoggingTask extends AsyncTask<Void, Void, HttpBundle> { |
| 553 |
|
| 554 |
private CloudServersException exception;
|
| 555 |
|
| 556 |
@Override
|
| 557 |
protected void onPreExecute(){ |
| 558 |
showDialog(); |
| 559 |
} |
| 560 |
|
| 561 |
@Override
|
| 562 |
protected HttpBundle doInBackground(Void... arg0) { |
| 563 |
HttpBundle bundle = null;
|
| 564 |
try {
|
| 565 |
bundle = (new LoadBalancerManager(context)).setLogging(loadBalancer, !Boolean.valueOf(loadBalancer.getIsConnectionLoggingEnabled())); |
| 566 |
} catch (CloudServersException e) {
|
| 567 |
exception = e; |
| 568 |
} |
| 569 |
return bundle;
|
| 570 |
} |
| 571 |
|
| 572 |
@Override
|
| 573 |
protected void onPostExecute(HttpBundle bundle) { |
| 574 |
hideDialog(); |
| 575 |
HttpResponse response = bundle.getResponse(); |
| 576 |
if (response != null) { |
| 577 |
int statusCode = response.getStatusLine().getStatusCode();
|
| 578 |
if (statusCode == 202 || statusCode == 204) { |
| 579 |
pollLoadBalancerTask = new PollLoadBalancerTask();
|
| 580 |
pollLoadBalancerTask.execute((Void[]) null); |
| 581 |
} else {
|
| 582 |
CloudServersException cse = parseCloudServersException(response); |
| 583 |
if ("".equals(cse.getMessage())) { |
| 584 |
showError("There was a problem changing your log settings.", bundle);
|
| 585 |
} else {
|
| 586 |
showError("There was a problem changing your log settings: " + cse.getMessage(), bundle);
|
| 587 |
} |
| 588 |
} |
| 589 |
} else if (exception != null) { |
| 590 |
showError("There was a problem changing your log settings: " + exception.getMessage(), bundle);
|
| 591 |
|
| 592 |
} |
| 593 |
|
| 594 |
} |
| 595 |
} |
| 596 |
|
| 597 |
private class SessionPersistenceTask extends AsyncTask<Void, Void, HttpBundle> { |
| 598 |
|
| 599 |
private CloudServersException exception;
|
| 600 |
|
| 601 |
@Override
|
| 602 |
protected void onPreExecute(){ |
| 603 |
showDialog(); |
| 604 |
} |
| 605 |
|
| 606 |
@Override
|
| 607 |
protected HttpBundle doInBackground(Void... arg0) { |
| 608 |
HttpBundle bundle = null;
|
| 609 |
try {
|
| 610 |
String currentSetting = loadBalancer.getSessionPersistence();
|
| 611 |
if(currentSetting == null){ |
| 612 |
bundle = (new LoadBalancerManager(context)).setSessionPersistence(loadBalancer, "HTTP_COOKIE"); |
| 613 |
} else {
|
| 614 |
bundle = (new LoadBalancerManager(context)).disableSessionPersistence(loadBalancer);
|
| 615 |
} |
| 616 |
} catch (CloudServersException e) {
|
| 617 |
exception = e; |
| 618 |
} |
| 619 |
return bundle;
|
| 620 |
} |
| 621 |
|
| 622 |
@Override
|
| 623 |
protected void onPostExecute(HttpBundle bundle) { |
| 624 |
hideDialog(); |
| 625 |
HttpResponse response = bundle.getResponse(); |
| 626 |
if (response != null) { |
| 627 |
int statusCode = response.getStatusLine().getStatusCode();
|
| 628 |
if (statusCode == 202 || statusCode == 200) { |
| 629 |
pollLoadBalancerTask = new PollLoadBalancerTask();
|
| 630 |
pollLoadBalancerTask.execute((Void[]) null); |
| 631 |
} else {
|
| 632 |
CloudServersException cse = parseCloudServersException(response); |
| 633 |
if ("".equals(cse.getMessage())) { |
| 634 |
showError("There was a problem changing your session persistence settings.", bundle);
|
| 635 |
} else {
|
| 636 |
showError("There was a problem changing your session persistence settings: " + cse.getMessage(), bundle);
|
| 637 |
} |
| 638 |
} |
| 639 |
} else if (exception != null) { |
| 640 |
showError("There was a problem changing your session persistence settings: " + exception.getMessage(), bundle);
|
| 641 |
|
| 642 |
} |
| 643 |
|
| 644 |
} |
| 645 |
} |
| 646 |
|
| 647 |
|
| 648 |
} |