Initial Django project setup for Postgres cluster management - Created Django project structure with postgres_handholder main app - Added clusters, backups, and monitoring apps - Implemented comprehensive models for PostgresCluster, PostgresInstance, ClusterUser, ClusterDatabase - Added forms and views for cluster management - Created Bootstrap 5 templates with modern UI - Added Docker and Docker Compose configuration - Included Celery for background tasks - Added comprehensive requirements.txt with all dependencies - Updated README with installation and usage instructions - Added environment configuration example - Set up proper URL routing and app structure
This commit is contained in:
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clusters/views.py
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261
clusters/views.py
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from django.shortcuts import render, get_object_or_404, redirect
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from django.contrib.auth.decorators import login_required
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from django.contrib import messages
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from django.http import JsonResponse
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from django.views.decorators.http import require_http_methods
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from django.core.paginator import Paginator
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from .models import PostgresCluster, PostgresInstance, ClusterUser, ClusterDatabase
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from .forms import PostgresClusterForm, ClusterUserForm, ClusterDatabaseForm
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@login_required
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def cluster_list(request):
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"""Display list of all clusters."""
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clusters = PostgresCluster.objects.filter(created_by=request.user)
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# Filtering
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status_filter = request.GET.get('status')
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if status_filter:
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clusters = clusters.filter(status=status_filter)
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# Pagination
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paginator = Paginator(clusters, 10)
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page_number = request.GET.get('page')
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page_obj = paginator.get_page(page_number)
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context = {
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'page_obj': page_obj,
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'status_choices': PostgresCluster._meta.get_field('status').choices,
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}
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return render(request, 'clusters/cluster_list.html', context)
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@login_required
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def cluster_create(request):
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"""Create a new Postgres cluster."""
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if request.method == 'POST':
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form = PostgresClusterForm(request.POST)
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if form.is_valid():
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cluster = form.save(commit=False)
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cluster.created_by = request.user
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cluster.save()
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messages.success(request, f'Cluster "{cluster.name}" created successfully.')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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else:
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form = PostgresClusterForm()
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context = {
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'form': form,
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'title': 'Create New Cluster',
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}
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return render(request, 'clusters/cluster_form.html', context)
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@login_required
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def cluster_detail(request, cluster_id):
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"""Display detailed information about a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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context = {
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'cluster': cluster,
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'instances': cluster.instances.all(),
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'users': cluster.users.all(),
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'databases': cluster.databases.all(),
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}
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return render(request, 'clusters/cluster_detail.html', context)
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@login_required
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def cluster_edit(request, cluster_id):
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"""Edit an existing cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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if request.method == 'POST':
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form = PostgresClusterForm(request.POST, instance=cluster)
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if form.is_valid():
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form.save()
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messages.success(request, f'Cluster "{cluster.name}" updated successfully.')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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else:
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form = PostgresClusterForm(instance=cluster)
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context = {
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'form': form,
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'cluster': cluster,
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'title': f'Edit Cluster: {cluster.name}',
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}
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return render(request, 'clusters/cluster_form.html', context)
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@login_required
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def cluster_delete(request, cluster_id):
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"""Delete a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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if request.method == 'POST':
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cluster_name = cluster.name
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cluster.delete()
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messages.success(request, f'Cluster "{cluster_name}" deleted successfully.')
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return redirect('clusters:cluster_list')
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context = {
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'cluster': cluster,
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}
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return render(request, 'clusters/cluster_confirm_delete.html', context)
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@login_required
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@require_http_methods(["POST"])
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def cluster_start(request, cluster_id):
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"""Start a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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try:
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# TODO: Implement actual cluster start logic
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cluster.status = 'starting'
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cluster.save()
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messages.success(request, f'Starting cluster "{cluster.name}"...')
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except Exception as e:
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messages.error(request, f'Failed to start cluster: {str(e)}')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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@login_required
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@require_http_methods(["POST"])
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def cluster_stop(request, cluster_id):
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"""Stop a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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try:
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# TODO: Implement actual cluster stop logic
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cluster.status = 'stopping'
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cluster.save()
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messages.success(request, f'Stopping cluster "{cluster.name}"...')
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except Exception as e:
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messages.error(request, f'Failed to stop cluster: {str(e)}')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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@login_required
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@require_http_methods(["POST"])
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def cluster_restart(request, cluster_id):
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"""Restart a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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try:
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# TODO: Implement actual cluster restart logic
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cluster.status = 'starting'
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cluster.save()
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messages.success(request, f'Restarting cluster "{cluster.name}"...')
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except Exception as e:
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messages.error(request, f'Failed to restart cluster: {str(e)}')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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@login_required
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@require_http_methods(["POST"])
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def cluster_update(request, cluster_id):
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"""Update a cluster (rolling update)."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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try:
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# TODO: Implement actual rolling update logic
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cluster.status = 'updating'
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cluster.save()
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messages.success(request, f'Updating cluster "{cluster.name}"...')
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except Exception as e:
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messages.error(request, f'Failed to update cluster: {str(e)}')
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return redirect('clusters:cluster_detail', cluster_id=cluster.id)
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@login_required
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def cluster_users(request, cluster_id):
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"""Manage users for a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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if request.method == 'POST':
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form = ClusterUserForm(request.POST)
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if form.is_valid():
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user = form.save(commit=False)
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user.cluster = cluster
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user.created_by = request.user
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user.save()
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messages.success(request, f'User "{user.username}" created successfully.')
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return redirect('clusters:cluster_users', cluster_id=cluster.id)
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else:
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form = ClusterUserForm()
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context = {
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'cluster': cluster,
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'form': form,
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'users': cluster.users.all(),
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}
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return render(request, 'clusters/cluster_users.html', context)
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@login_required
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def cluster_databases(request, cluster_id):
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"""Manage databases for a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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if request.method == 'POST':
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form = ClusterDatabaseForm(request.POST)
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if form.is_valid():
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database = form.save(commit=False)
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database.cluster = cluster
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database.save()
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messages.success(request, f'Database "{database.name}" created successfully.')
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return redirect('clusters:cluster_databases', cluster_id=cluster.id)
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else:
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form = ClusterDatabaseForm()
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context = {
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'cluster': cluster,
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'form': form,
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'databases': cluster.databases.all(),
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}
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return render(request, 'clusters/cluster_databases.html', context)
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@login_required
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def cluster_instances(request, cluster_id):
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"""View instances for a cluster."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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context = {
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'cluster': cluster,
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'instances': cluster.instances.all(),
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}
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return render(request, 'clusters/cluster_instances.html', context)
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@login_required
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def cluster_status_api(request, cluster_id):
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"""API endpoint to get cluster status."""
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cluster = get_object_or_404(PostgresCluster, id=cluster_id, created_by=request.user)
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data = {
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'id': cluster.id,
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'name': cluster.name,
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'status': cluster.status,
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'instances': [
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{
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'id': instance.id,
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'name': instance.name,
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'type': instance.instance_type,
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'status': instance.status,
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'host': instance.host,
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'port': instance.port,
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'cpu_usage': instance.cpu_usage,
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'memory_usage': instance.memory_usage,
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'disk_usage': instance.disk_usage,
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}
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for instance in cluster.instances.all()
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]
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}
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return JsonResponse(data)
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