public S3Access()
{
S3Config = new AmazonS3Config();
RegionEndpoint bucketRegion = RegionEndpoint.GetBySystemName(EnvironmentHandler.GetEnvironmentHandler().GetVariable("BucketRegion"));
S3Config.RegionEndpoint = bucketRegion;
S3Client = new MyAmazonS3Client(S3Config);
}
/// <summary>
/// Entry point for the BlogPost Handler.
/// </summary>
/// <param name="blogPost">The Incoming BlogPost</param>
/// <param name="context">The Lambda event context</param>
/// <returns></returns>
public BlogPost FunctionHandler(BlogPost blogPost, ILambdaContext context)
{
// not using a separate logic layer because this _is_ the logic layer
LambdaLogger.Log("BlogPostHandler Lambda Started");
// Config/Initialization
EnvironmentHandler env = EnvironmentHandler.GetEnvironmentHandler();
string bucketName = env.GetVariable("BucketName");
string bucketRegionString = env.GetVariable("BucketRegion");
string postsDirectory = env.GetVariable("PostsDirectory");
string imagesDirectory = env.GetVariable("ImagesDirectory");
string metaDirectory = env.GetVariable("MetaDirectory");
// get blog post
BlogPostS3Access blogPostAccess = new BlogPostS3Access(bucketName, bucketRegionString);
blogPostAccess.Logger = context.Logger;
var blogPostResponse = blogPostAccess.GetBlogPost(blogPost);
blogPostResponse.Wait();
blogPost = blogPostResponse.Result;
if (blogPost.Metadata != null)
{
// get related posts
TagFileS3Access tagFileAccess = new TagFileS3Access();
tagFileAccess.Logger = context.Logger;
var relatedPostsResponse = tagFileAccess.GetBlogPostIdsFromTags(blogPost.Metadata.Tags);
relatedPostsResponse.Wait();
blogPost.RelatedPosts = relatedPostsResponse.Result;
// remove all related posts which are the current post
blogPost.RelatedPosts.RemoveAll(b => b.Id == blogPost.Id);
// populate related posts objects
for (int i = 0; i < blogPost.RelatedPosts.Count; i++)
{
var relatedPostResponse = blogPostAccess.GetBlogPost(blogPost.RelatedPosts[i]);
relatedPostResponse.Wait();
blogPost.RelatedPosts[i] = relatedPostResponse.Result;
// remove Markdown identifiers in the teaser content text, as it shows up
// as a related post
blogPost.RelatedPosts[i].Content = StringHelper.StripMarkdownIdentifiers(blogPost.RelatedPosts[i].Content);
}
}
else
{
return(null);
}
return(blogPost);
}
public void SanityTest_IdOfOne_ReturnsTrue()
{
// Invoke the lambda function and confirm the string was upper cased.
var function = new Function();
var context = new TestLambdaContext();
EnvironmentHandler.GetEnvironmentHandler().SetVariable("bucketRegion", "test");
EnvironmentHandler.GetEnvironmentHandler().SetVariable("BucketName", "test");
EnvironmentHandler.GetEnvironmentHandler().SetVariable("BucketRegion", "test");
EnvironmentHandler.GetEnvironmentHandler().SetVariable("PostsDirectory", "test");
EnvironmentHandler.GetEnvironmentHandler().SetVariable("ImagesDirectory", "test");
EnvironmentHandler.GetEnvironmentHandler().SetVariable("MetaDirectory", "test");
var idOfOne = function.FunctionHandler(new BlogPost(1), context);
Assert.AreEqual(idOfOne, new BlogPost(1));
}
public async Task <BlogPost> GetBlogPost(BlogPost blogPost)
{
var environmentHandler = EnvironmentHandler.GetEnvironmentHandler();
// get post contents
string keyName = blogPost.Id.ToString();
var content = await GetBlogPostContent(blogPost, environmentHandler.GetVariable("PostsDirectory"), keyName); //TODO remove keyName since its the id of the blogpost
blogPost.Content = content;
// get post metadata
var metadata = await GetBlogPostMetadata(blogPost, environmentHandler.GetVariable("MetaDirectory"), keyName);
blogPost.Metadata = metadata;
return(blogPost);
}
// what is the wisdom of my base object retrieval class getting things as strings?
public virtual async Task <TagFile> GetTagFile()
{
// use GetObject to retrieve the TagFile
string tagFileContents = await GetObject(new GetObjectRequest
{
BucketName = EnvironmentHandler.GetEnvironmentHandler().GetVariable("BucketName"),
Key = TagFileS3Access.TagFileName
});
// parse string into TagFile
// each line is one entry
string[] lines = tagFileContents.Split("\n", StringSplitOptions.RemoveEmptyEntries);
if (tagFileContents == string.Empty)
{
throw new TagFileException("Exception - Empty TagFile.");
}
TagFile tagFile = new TagFile();
for (int i = 0; i < lines.Length; i++)
{
var line = lines[i];
// parse each line - split on '-'; LHS is tag, RHS is array of ids
string[] lineContents = line.Split('-');
if (lineContents.Length != 2)
{
throw new TagFileException($"there is an issue with tagfile format on line {i}.");
}
List <string> ids = lineContents[1].Split(',').ToList();
tagFile.AddEntry(lineContents[0], new SortedSet <string>(ids));
}
return(tagFile);
}