private IEnumerable <ResourceLink> CreateLinksForArtifacts(HttpContext context,
ArtifactResourceQueryParameters artifactParameters,
bool hasNext, bool hasPrevious)
{
var links = new List <ResourceLink>
{
// self links
new ResourceLink(
CreateArtifactsResourceUri(context, artifactParameters, ResourceUriType.Current),
"self", "GET")
};
if (hasNext)
{
links.Add(
new ResourceLink(
CreateArtifactsResourceUri(context, artifactParameters, ResourceUriType.NextPage),
"nextPage", "GET"));
}
if (hasPrevious)
{
links.Add(
new ResourceLink(
CreateArtifactsResourceUri(context, artifactParameters, ResourceUriType.PreviousPage),
"previousPage", "GET"));
}
return(links);
}
public async Task <IActionResult> GetArtifacts(
[HttpTrigger(AuthorizationLevel.Function, "get", Route = "artifacts")] HttpRequest req,
ILogger log)
{
var queryParams = new ArtifactResourceQueryParameters();
queryParams.Fields = req.Query.ContainsKey("fields") ? req.Query["fields"].ToString() : string.Empty;
queryParams.OrderBy = req.Query.ContainsKey("orderby") ? req.Query["orderby"].ToString() : string.Empty;
queryParams.Filter = req.Query.ContainsKey("filter") ? req.Query["filter"].ToString() : string.Empty;
queryParams.Page = req.Query.ContainsKey("page") ? int.Parse(req.Query["page"]) : 1;
queryParams.Limit = req.Query.ContainsKey("limit") ? int.Parse(req.Query["limit"]) : 10;
if (!typeof(Artifact).HasProperties(queryParams.Fields))
{
return(new BadRequestResult());
}
var pagedRecords = await _documentStore.GetArtifacts(queryParams);
var records = pagedRecords.ChooseFields(queryParams.Fields);
var links = CreateLinksForArtifacts(req.HttpContext, queryParams, pagedRecords.HasNextPage, pagedRecords.HasPreviousPage);
var responseBody = new ApiResponse <ExpandoObject>(links, records);
return(new OkObjectResult(responseBody));
}
private string CreateArtifactsResourceUri(HttpContext context, ArtifactResourceQueryParameters artifactParameters, ResourceUriType type)
{
var uriBuilder = new UriBuilder(context.Request.Scheme, context.Request.Host.Host)
{
Path = $"api/artifacts",
};
if (context.Request.Host.Port.HasValue)
{
uriBuilder.Port = context.Request.Host.Port.Value;
}
var query = HttpUtility.ParseQueryString(uriBuilder.Query);
query["fields"] = artifactParameters.Fields;
query["orderBy"] = artifactParameters.OrderBy;
query["limit"] = artifactParameters.Limit.ToString();
switch (type)
{
case ResourceUriType.PreviousPage:
query["page"] = (artifactParameters.Page - 1).ToString();
uriBuilder.Query = query.ToString();
return(uriBuilder.ToString());
case ResourceUriType.NextPage:
query["page"] = (artifactParameters.Page + 1).ToString();
uriBuilder.Query = query.ToString();
return(uriBuilder.ToString());
case ResourceUriType.Current:
query["page"] = (artifactParameters.Page).ToString();
uriBuilder.Query = query.ToString();
return(uriBuilder.ToString());
default:
return(string.Empty);
}
}
