Frontend gaps fill work. Testing fixes work. Auditing in progress.
This commit is contained in:
StellaOps Bot
323
src/Signals/StellaOps.Signals/Scm/Webhooks/GitHubEventMapper.cs
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323
src/Signals/StellaOps.Signals/Scm/Webhooks/GitHubEventMapper.cs
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using System.Text.Json;
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using StellaOps.Signals.Scm.Models;
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namespace StellaOps.Signals.Scm.Webhooks;
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/// <summary>
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/// Maps GitHub webhook events to normalized SCM events.
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/// </summary>
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public sealed class GitHubEventMapper : IScmEventMapper
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{
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public ScmProvider Provider => ScmProvider.GitHub;
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public NormalizedScmEvent? Map(string eventType, string deliveryId, JsonElement payload)
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{
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var (scmEventType, extractor) = eventType.ToLowerInvariant() switch
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{
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"push" => (ScmEventType.Push, (Func<JsonElement, (ScmEventType, string?, string?)>)ExtractPushDetails),
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"pull_request" => (ScmEventType.Unknown, ExtractPullRequestDetails),
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"release" => (ScmEventType.ReleasePublished, ExtractReleaseDetails),
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"create" => (ScmEventType.Unknown, ExtractCreateDetails),
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"workflow_run" => (ScmEventType.Unknown, ExtractWorkflowRunDetails),
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"check_run" => (ScmEventType.Unknown, ExtractCheckRunDetails),
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_ => (ScmEventType.Unknown, (Func<JsonElement, (ScmEventType, string?, string?)>?)null)
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};
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if (extractor is null && scmEventType == ScmEventType.Unknown)
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{
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return null;
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}
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var repository = ExtractRepository(payload);
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if (repository is null)
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{
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return null;
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}
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string? commitSha = null;
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string? refName = null;
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if (extractor is not null)
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{
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var (extractedType, sha, @ref) = extractor(payload);
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if (extractedType != ScmEventType.Unknown)
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{
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scmEventType = extractedType;
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}
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commitSha = sha;
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refName = @ref;
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}
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return new NormalizedScmEvent
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{
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EventId = deliveryId,
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Provider = ScmProvider.GitHub,
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EventType = scmEventType,
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Timestamp = DateTimeOffset.UtcNow,
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Repository = repository,
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Actor = ExtractActor(payload),
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Ref = refName ?? GetString(payload, "ref"),
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CommitSha = commitSha ?? GetNestedString(payload, "head_commit", "id"),
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PullRequest = ExtractPullRequest(payload),
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Release = ExtractRelease(payload),
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Pipeline = ExtractWorkflow(payload)
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};
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}
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private static (ScmEventType, string?, string?) ExtractPushDetails(JsonElement payload)
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{
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var sha = GetNestedString(payload, "head_commit", "id") ?? GetString(payload, "after");
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var refName = GetString(payload, "ref");
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return (ScmEventType.Push, sha, refName);
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}
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private static (ScmEventType, string?, string?) ExtractPullRequestDetails(JsonElement payload)
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{
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var action = GetString(payload, "action");
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var eventType = action switch
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{
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"opened" or "reopened" => ScmEventType.PullRequestOpened,
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"closed" when GetNestedBool(payload, "pull_request", "merged") => ScmEventType.PullRequestMerged,
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"closed" => ScmEventType.PullRequestClosed,
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_ => ScmEventType.Unknown
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};
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var sha = GetNestedString(payload, "pull_request", "head", "sha");
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var refName = GetNestedString(payload, "pull_request", "head", "ref");
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return (eventType, sha, refName);
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}
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private static (ScmEventType, string?, string?) ExtractReleaseDetails(JsonElement payload)
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{
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var action = GetString(payload, "action");
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if (action != "published")
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{
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return (ScmEventType.Unknown, null, null);
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}
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var tagName = GetNestedString(payload, "release", "tag_name");
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return (ScmEventType.ReleasePublished, null, tagName);
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}
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private static (ScmEventType, string?, string?) ExtractCreateDetails(JsonElement payload)
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{
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var refType = GetString(payload, "ref_type");
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if (refType != "tag")
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{
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return (ScmEventType.Unknown, null, null);
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}
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var refName = GetString(payload, "ref");
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return (ScmEventType.TagCreated, null, refName);
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}
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private static (ScmEventType, string?, string?) ExtractWorkflowRunDetails(JsonElement payload)
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{
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var action = GetString(payload, "action");
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var conclusion = GetNestedString(payload, "workflow_run", "conclusion");
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var eventType = action switch
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{
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"requested" or "in_progress" => ScmEventType.PipelineStarted,
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"completed" when conclusion == "success" => ScmEventType.PipelineSucceeded,
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"completed" => ScmEventType.PipelineFailed,
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_ => ScmEventType.Unknown
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};
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var sha = GetNestedString(payload, "workflow_run", "head_sha");
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var refName = GetNestedString(payload, "workflow_run", "head_branch");
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return (eventType, sha, refName);
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}
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private static (ScmEventType, string?, string?) ExtractCheckRunDetails(JsonElement payload)
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{
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var action = GetString(payload, "action");
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var status = GetNestedString(payload, "check_run", "status");
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var conclusion = GetNestedString(payload, "check_run", "conclusion");
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var eventType = (action, status, conclusion) switch
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{
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("created", _, _) => ScmEventType.PipelineStarted,
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("completed", _, "success") => ScmEventType.PipelineSucceeded,
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("completed", _, _) => ScmEventType.PipelineFailed,
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_ => ScmEventType.Unknown
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};
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var sha = GetNestedString(payload, "check_run", "head_sha");
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return (eventType, sha, null);
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}
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private static ScmRepository? ExtractRepository(JsonElement payload)
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{
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if (!payload.TryGetProperty("repository", out var repo))
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{
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return null;
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}
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return new ScmRepository
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{
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Id = GetString(repo, "id")?.ToString(),
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FullName = GetString(repo, "full_name") ?? string.Empty,
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Owner = GetNestedString(repo, "owner", "login"),
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Name = GetString(repo, "name"),
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CloneUrl = GetString(repo, "clone_url"),
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DefaultBranch = GetString(repo, "default_branch"),
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IsPrivate = GetBool(repo, "private")
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};
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}
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private static ScmActor? ExtractActor(JsonElement payload)
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{
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if (!payload.TryGetProperty("sender", out var sender))
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{
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return null;
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}
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var actorType = GetString(sender, "type") switch
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{
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"User" => ScmActorType.User,
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"Bot" => ScmActorType.Bot,
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_ => ScmActorType.Unknown
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};
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return new ScmActor
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{
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Id = GetString(sender, "id")?.ToString(),
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Username = GetString(sender, "login"),
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Type = actorType
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};
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}
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private static ScmPullRequest? ExtractPullRequest(JsonElement payload)
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{
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if (!payload.TryGetProperty("pull_request", out var pr))
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{
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return null;
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}
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return new ScmPullRequest
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{
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Number = GetInt(pr, "number"),
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Title = GetString(pr, "title"),
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SourceBranch = GetNestedString(pr, "head", "ref"),
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TargetBranch = GetNestedString(pr, "base", "ref"),
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State = GetString(pr, "state"),
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Url = GetString(pr, "html_url")
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};
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}
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private static ScmRelease? ExtractRelease(JsonElement payload)
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{
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if (!payload.TryGetProperty("release", out var release))
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{
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return null;
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}
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return new ScmRelease
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{
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Id = GetString(release, "id")?.ToString(),
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TagName = GetString(release, "tag_name"),
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Name = GetString(release, "name"),
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IsPrerelease = GetBool(release, "prerelease"),
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IsDraft = GetBool(release, "draft"),
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Url = GetString(release, "html_url")
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};
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}
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private static ScmPipeline? ExtractWorkflow(JsonElement payload)
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{
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if (!payload.TryGetProperty("workflow_run", out var run))
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{
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if (!payload.TryGetProperty("check_run", out var checkRun))
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{
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return null;
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}
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return new ScmPipeline
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{
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Id = GetString(checkRun, "id")?.ToString(),
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Name = GetString(checkRun, "name"),
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Status = GetString(checkRun, "status") switch
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{
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"queued" => ScmPipelineStatus.Queued,
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"in_progress" => ScmPipelineStatus.InProgress,
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"completed" => ScmPipelineStatus.Completed,
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_ => ScmPipelineStatus.Unknown
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},
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Conclusion = GetString(checkRun, "conclusion"),
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Url = GetString(checkRun, "html_url")
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};
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}
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return new ScmPipeline
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{
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Id = GetString(run, "id")?.ToString(),
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Name = GetString(run, "name"),
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RunNumber = GetLong(run, "run_number"),
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Status = GetString(run, "status") switch
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{
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"queued" => ScmPipelineStatus.Queued,
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"in_progress" => ScmPipelineStatus.InProgress,
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"completed" => ScmPipelineStatus.Completed,
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_ => ScmPipelineStatus.Unknown
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},
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Conclusion = GetString(run, "conclusion"),
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Url = GetString(run, "html_url")
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};
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}
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private static string? GetString(JsonElement element, string property)
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{
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return element.TryGetProperty(property, out var value) && value.ValueKind == JsonValueKind.String
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? value.GetString()
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: null;
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}
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private static bool GetBool(JsonElement element, string property)
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{
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return element.TryGetProperty(property, out var value) &&
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value.ValueKind == JsonValueKind.True;
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}
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private static int GetInt(JsonElement element, string property)
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{
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return element.TryGetProperty(property, out var value) && value.ValueKind == JsonValueKind.Number
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? value.GetInt32()
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: 0;
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}
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private static long GetLong(JsonElement element, string property)
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{
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return element.TryGetProperty(property, out var value) && value.ValueKind == JsonValueKind.Number
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? value.GetInt64()
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: 0;
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}
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private static string? GetNestedString(JsonElement element, params string[] path)
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{
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var current = element;
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foreach (var prop in path)
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{
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if (!current.TryGetProperty(prop, out current))
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{
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return null;
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}
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}
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return current.ValueKind == JsonValueKind.String ? current.GetString() : null;
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}
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private static bool GetNestedBool(JsonElement element, params string[] path)
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{
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var current = element;
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foreach (var prop in path)
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{
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if (!current.TryGetProperty(prop, out current))
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{
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return false;
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}
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}
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return current.ValueKind == JsonValueKind.True;
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}
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}
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