Evolution-StepStone

Evolution's DI library for connecting to V6.17.1 StepStone's Federated Candidate Search API.

This is a preview API and is not ready for production release.

How to set up

Add a config section holding the connection details for the StepStone brand to appsettings.json:

"StepStone": [
    {
        "Name":              "Optional, fallback to Url",
        "Url":               "https://recruiter.{StepStone brand site}",
        "ClientID":          "████████-████-████-████-████████████",
        "ClientSecret":      "████████-████-████-████-████████████",
        "RecruiterUsername": "████████",
        "RecruiterPassword": "████████"
    },
    ...
]

This can then be added using the standard Dependency Injection pattern in Startup.cs:

public void ConfigureServices(IServiceCollection services)
{
     ...
     services.AddStepStoneService("MyAppName", this.Configuration.GetSection("StepStone"));

This can then be referenced as a DI service: [FromServices] IStepStoneService stepStone

How to use

Assuming you have the DI instance IStepStoneService stepStone...

Authenticate

First you need to get the authentication token:

// Authenticate a new token, the username and key are your internal ones
var token = await stepStone.Authenticate("your username", "your session key");

This token can be re-used for up to token.Expires in seconds.

This token will hold the keys for all the services configured and is unique to the user, it should not be shared between users.

The username and session key are passed in the header for every request - they can be anything, but should uniquely identify the application user.

Authentication Errors

Authentication can time out and will throw a StepStoneAuthenticationException if a request is made with an outdated token.

Wrap calls to the API in a try-catch to handle this:

Func<StepStoneToken> action = /* Action calling StepStone API */;

try { return await action(token) }
catch (StepStoneAuthenticationException authEx)
{
    logger.LogError(authEx, "Authentication exception, getting a new token.");

    // Clear the old token and get a new one
    var newToken = await this.StepStoneToken(user);

    // Save this new token
 
    // Try again with a new token, but don't wrap in try-catch again
    return await action(newToken);
}

Don't use this pattern for the Authenticate method, as in that context StepStoneAuthenticationException means your credentials are incorrect.

Quotas

To check a quota pass the token and the name (if configured) or the https://recruiter.{StepStone brand site}:

var quota = await stepStone.Quota(token, "brand name");

Run a search

Build a SearchRequest with the details of the search, then call:

SearchRequest request = /* Build search request object */;

var searchResults = await stepStone.Search(token, "brand name", request);
// OR, the last 2 flags are optional
var searchResults = await stepStone.Search(token, "brand name", request, includeFacets, includeCandidatesActivity);

int resultCount = searchResults.TotalResultsCount;

// If includeFacets: true passed to Search
var facets = searchResults.Facets;

foreach(var candidate in searchResults.Candidates) {
    // Unique ID to get the candidate's contact details or CV
    var id = candidate.Id;
}

The Search method will attempt to resolve invalid requests, for instance if you pass a salary filter and a salary facet the facet will be removed. When these validation changes are made the ILoggerFactory will log a warning.

The results will include anonymised candidates, and you can use the Id property to fetch the full version.

Get a candidate

There are two methods, Candidate gets the same structure as search, but with contact details, CV gets the CV file as a collection of byte:

var candidate = await stepStone.Candidate(token, "brand name", id);
var cv = await stepStone.CV(token, "brand name", id);

Calling either of these will reduce quota by one unless the candidate is already recently purchased.

Exceptions

Three kinds of expected exceptions can be thrown:

StepStoneAuthenticationException if thrown by Authenticate this means invalid credentials, otherwise it means the current token has expired.
StepStoneServiceException issues with the service or gateway, generally 500 status errors.
StepStoneSearchException issues with the search request object, containing the response message from the API.

License

EvolutionJobs/Evolution-StepStone

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