ReFlex.Logging

Small node logging server using express and winston to log sensor data and result sets. Data sets can be stored as well.

Start Logging Server

start logging / data service with npm run debug (when debugging is necessary) or npm run start
server runs at http://localhost:4302
Test request can be found in test/Insomnia/Insomnia_Workspace.json for testing the REST_API with Insomnia

endpoint	Method	Description	Example Request Body	Example Response Body
`/log/create`	POST	create log file / start logging	`{ "message": "FrameId, IsValid, Comment;" }`	`{ "file": "2023-07-27T205105.042Z" }`
`/log/data`	POST	log message to file	`{ "message": "2, false, +++;" }`
`/log/data/2023-07-27T205105.042Z`	GET	retireve data logs	`FrameId, IsValid, Comment;` `2, false, +++;`
`/log/result`	POST	log result to file	`{ "ProbandId": 3, "test": true, "result": "result" }`
`/log/result`	GET	retrieve results		`{ "ProbandId": 3, "test": true, "result": "result" }`
`/data/11`	POST	create data file `data_011.json`	`{` `"data0": "test"` `"data1": "abc"` `"data3": "123"` `}`	`{ "file": "data/data_011.json" }`
`/data/11`	GET	retrieve data file `data_011.json`		`{` `"data0": "test"` `"data1": "abc"` `"data3": "123"` `}`
`/data`	GET	list of available data sets		`[ 11 ]`

first create Log file with a POST-Request to /log/create
as body, provide the header as message: { "message": "FrameId, IsValid, Comment;" } writes "FrameId, IsValid, Comment; in the first line of the data.csv The response contains the current log file name, in the form { "file": "2023-07-27T204421.294Z" } This can be used for querying data logs (see Query Logs).
sensor data can be written in the same way by sending a POST request to log/data with the same body format ({ "message": "1, true, testresult;" } writes 1, true, testresult; as line in the csv)
results are written by sending a json string to /log/result. The body of the POST request is written as line in the result file without unmodified.
logs are stored in /data/log in the format %DATE%_data.csv for tracking data and %DATE%_result.json for results.
errors are logged in the same directory as %DATE%_error.log

Result sets can be retrieved by executing a GET request to /log/result
Data Logs can be retrieved by executing a get request to log/data/{file}, where file is the file name returned by /log/create

When generating data, these can be stored and retrieved in the data directory:

save a data set in json format by sending a request to /data/{id} with id being the identifier for the data set.
the json data provided in the body of the POST request is stored as data_{id} in the data directory
to retrieve this data set, just send a GET request to /data/{id}