content-restore-failure.cshtml

@using Umbraco.Core.Services
@using Umbraco.Core
@using Umbraco.Core.Deploy

@inherits Umbraco.Web.Mvc.UmbracoViewPage

@using Umbraco.Web.Models

@{
    Layout = "Master.cshtml";

    var scf = DependencyResolver.Current.GetService<Umbraco.Deploy.Connectors.ServiceConnectors.IServiceConnectorFactory>();
    var cs = DependencyResolver.Current.GetService<IContentService>();
    var cts = DependencyResolver.Current.GetService<IContentTypeService>();

    var contentTypes = cts.GetAll();
    var count = 0;
    long totalCount = 0;
    var errorMessage = string.Empty;
    foreach (var ct in contentTypes)
    {
        var contentOfContentType = cs.GetPagedOfType(ct.Id, 0, 1000, out long totalRecords, null);

        foreach (var content in contentOfContentType)
        {
            var udi = content.GetUdi();
            var connector = scf.GetConnector(udi.EntityType);
            try
            {
                var artifact = connector.GetArtifact(content);
            }
            catch (JsonReaderException ex)
            {
                errorMessage += $"Failed with {ex.Message} on content with ID {content.Id}.<br/>";
            }
        }

        count += contentOfContentType.Count();
        totalCount += totalRecords;
    }
}

<div>Content types: @contentTypes.Count()</div>
<div>Content: @count, @totalCount</div>

<div>Error: @Html.Raw(errorMessage)</div>