James Eversole
bf30d5945e
Perhaps the first webserver in Tree Calculus? Sure, it's married to a Haskell IO runtime... but we're managing all of the actual webserver semantics in tricu! This includes a demo Arboricx application server that is capable of storing and serving bundles.
144 lines
4.9 KiB
Plaintext
144 lines
4.9 KiB
Plaintext
!import "../io.tri" !Local
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!import "../http.tri" !Local
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!import "../socket.tri" !Local
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!import "arboricx.tri" !Local
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-- ---------------------------------------------------------------------------
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-- Store layout helpers
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-- ---------------------------------------------------------------------------
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pathJoin = a b : append a (append "/" b)
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objectDir = root shard : pathJoin (pathJoin root "objects") shard
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bundleObjectPath = (root hash :
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((shard : pathJoin (objectDir root shard) (append hash ".arboricx"))
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(take 3 hash)))
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--bundleTmpPath = (root hash time :
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-- pathJoin (pathJoin root "tmp") (append hash (append "." (append (showNumber time) ".tmp"))))
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bundleTmpPath = (root hash time :
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pathJoin (pathJoin root "tmp") (append hash ".tmp"))
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-- ---------------------------------------------------------------------------
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-- Store initialization
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-- ---------------------------------------------------------------------------
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ensureDir = path : void (createDirectory path)
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ensureStore = (root :
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foldl
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thenIO
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(pure (ok t t))
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[(ensureDir root)
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(ensureDir (pathJoin root "tmp"))
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(ensureDir (pathJoin root "objects"))
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(ensureDir (pathJoin root "aliases"))
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(ensureDir (pathJoin (pathJoin root "aliases") "names"))
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(ensureDir (pathJoin (pathJoin root "aliases") "packages"))
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(ensureDir (pathJoin root "manifests"))])
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-- ---------------------------------------------------------------------------
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-- Bundle object write
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-- ---------------------------------------------------------------------------
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putBundleWrite = (root bundleBytes hash shard tmpPath finalPath :
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onResult_ (createDirectory (objectDir root shard))
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(e : pure (err (append "createDirectory: " e) t))
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(_ :
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onResult_ (writeBytes tmpPath bundleBytes)
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(e : pure (err (append "writeBytes: " e) t))
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(_ :
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onResult_ (renameFile tmpPath finalPath)
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(e : pure (err (append "renameFile: " e) t))
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(_ : pure (ok hash t)))))
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putBundleWithHash = (root bundleBytes time hash :
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putBundleWrite
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root
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bundleBytes
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hash
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(take 3 hash)
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(bundleTmpPath root hash time)
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(bundleObjectPath root hash))
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putBundle = (root bundleBytes :
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onResult_ currentTime
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(e : pure (err (append "currentTime: " e) t))
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(time :
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onResult_ (sha256Hex bundleBytes)
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(e : pure (err (append "sha256Hex: " e) t))
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(hash :
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bind (putBundleWithHash root bundleBytes time hash) (r :
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matchResult
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(e _ : pure (err (append "withHash: " e) t))
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(v _ : pure (ok v t))
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r))))
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-- ---------------------------------------------------------------------------
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-- Bundle object fetch
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-- ---------------------------------------------------------------------------
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getBundleByHash = (root hash :
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onResult_ (readFile (bundleObjectPath root hash))
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(errMsg : pure (err errMsg t))
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(bytes : pure (ok bytes t)))
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-- ---------------------------------------------------------------------------
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-- Registry routes
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-- ---------------------------------------------------------------------------
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healthRoute = (method target :
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matchBool
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(pure (okResponse "OK\n"))
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(pure notFoundResponse)
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(and? (equal? method "GET") (equal? target "/_arboricx/health")))
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putBundleRoute = (root method target body :
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matchBool
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(bind (putBundle root body) (result :
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matchResult
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(err _ : pure (badRequestResponse (append "Upload failed: " err)))
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(hash _ : pure (createdResponse hash))
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result))
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(pure notFoundResponse)
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(and? (equal? method "POST") (equal? target "/_arboricx/bundles")))
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getBundleRoute = (root method target :
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matchBool
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((hash :
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bind (getBundleByHash root hash) (result :
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matchResult
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(errMsg _ : pure (errorResponse 404 errMsg))
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(bytes _ : pure (response 200 "application/vnd.arboricx.bundle" bytes))
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result))
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(drop 23 target))
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(pure notFoundResponse)
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(and? (equal? method "GET") (startsWith? "/_arboricx/bundle/hash/" target)))
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arboricxRouter = (root method target headers body :
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matchBool
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(getBundleRoute root method target)
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(matchBool
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(putBundleRoute root method target body)
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(matchBool
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(healthRoute method target)
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(pure notFoundResponse)
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(and? (equal? method "GET") (equal? target "/_arboricx/health")))
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(and? (equal? method "POST") (equal? target "/_arboricx/bundles")))
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(and? (equal? method "GET") (startsWith? "/_arboricx/bundle/hash/" target)))
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-- ---------------------------------------------------------------------------
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-- Server entrypoint
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-- ---------------------------------------------------------------------------
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arboricxHandler = (root client peer :
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httpHandlerIO (arboricxRouter root) client peer)
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arboricxServer = (root addr port :
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onResult_ (listenSocket addr port 128)
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(errMsg : pure (err errMsg t))
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(server :
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serveForever server (arboricxHandler root)))
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