Adding health check function (#29)

* up logbatch function and creating a new type for parameters

* adding julia 1.6 in the CI pipeline

* adding an IOBuffer test

* adding healthcheck function to ensure port connection

src/utils.jl

@@ -1,3 +1,19 @@
+"""
+    healthcheck(mlf::MLFlow)
+
+Checks if MLFlow server is up and running. Returns `true` if it is, `false`
+otherwise.
+"""
+function healthcheck(mlf)
+    uri = "$(mlf.baseuri)/health"
+    try
+        response = HTTP.get(uri)
+        return String(response.body) == "OK"
+    catch e
+        return false
+    end
+end
+
 """
     uri(mlf::MLFlow, endpoint="", query=missing)
 

test/test_functional.jl

@@ -34,6 +34,9 @@ end
 @testset "utils" begin
     using MLFlowClient: uri, headers
     using URIs: URI
+
+    @test healthcheck(MLFlow()) == true
+
     let baseuri = "http://localhost:5001", apiversion = "2.0", endpoint = "experiments/get"
         mlf = MLFlow(baseuri; apiversion)
         apiuri = uri(mlf, endpoint)