cloudapi: Hook up the /search/packages handler

This connects all the pieces needed to implement the search.

If you POST a request to /search/packages like this:

    {
      "packages": [
        "tmux"
      ],
      "distribution": "fedora-41",
      "architecture": "x86_64"
    }

It will return details about the tmux packages that looks like this:

{
  "packages": [
    {
      "arch": "x86_64",
      "buildtime": "2024-10-10T00:19:06Z",
      "description": "tmux is ...",
      "license": "ISC AND BSD-2-Clause AND BSD-3-Clause AND SSH-short AND LicenseRef-Fedora-Public-Domain",
      "name": "tmux",
      "release": "2.fc41",
      "summary": "A terminal multiplexer",
      "url": "https://tmux.github.io/",
      "version": "3.5a"
    }
  ]
}

Resolves: RHEL-60136

internal/cloudapi/v2/search.go

@@ -0,0 +1,85 @@
+package v2
+
+// SearchPackagesRequest methods
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/osbuild/images/pkg/distrofactory"
+	"github.com/osbuild/images/pkg/reporegistry"
+	"github.com/osbuild/images/pkg/rpmmd"
+	"github.com/osbuild/osbuild-composer/internal/worker"
+)
+
+func (request *SearchPackagesRequest) Search(df *distrofactory.Factory, rr *reporegistry.RepoRegistry, workers *worker.Server) (rpmmd.PackageList, error) {
+	distro := df.GetDistro(request.Distribution)
+	if distro == nil {
+		return nil, HTTPError(ErrorUnsupportedDistribution)
+	}
+	distroArch, err := distro.GetArch(request.Architecture)
+	if err != nil {
+		return nil, HTTPErrorWithInternal(ErrorUnsupportedArchitecture, err)
+	}
+
+	var repos []rpmmd.RepoConfig
+	if request.Repositories != nil {
+		repos, err = convertRepos(*request.Repositories, []Repository{}, []string{})
+		if err != nil {
+			// Error comes from genRepoConfig and is already an HTTPError
+			return nil, err
+		}
+	} else {
+		repos, err = rr.ReposByArchName(request.Distribution, distroArch.Name(), false)
+		if err != nil {
+			return nil, HTTPErrorWithInternal(ErrorInvalidRepository, err)
+		}
+	}
+
+	// Send the search request to the worker
+	searchJobID, err := workers.EnqueueSearchPackages(&worker.SearchPackagesJob{
+		Packages:         request.Packages,
+		Repositories:     repos,
+		ModulePlatformID: distro.ModulePlatformID(),
+		Arch:             distroArch.Name(),
+		Releasever:       distro.Releasever(),
+	}, "")
+	if err != nil {
+		return nil, HTTPErrorWithInternal(ErrorEnqueueingJob, err)
+	}
+
+	// Limit how long a search can take
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute*depsolveTimeoutMin)
+	defer cancel()
+
+	// Wait until search job is finished, fails, or is canceled
+	var result worker.SearchPackagesJobResult
+	for {
+		time.Sleep(time.Millisecond * 50)
+		info, err := workers.SearchPackagesJobInfo(searchJobID, &result)
+		if err != nil {
+			return nil, HTTPErrorWithInternal(ErrorFailedToDepsolve, err)
+		}
+		if result.JobError != nil {
+			return nil, HTTPErrorWithInternal(ErrorFailedToDepsolve, err)
+		}
+		if info.JobStatus != nil {
+			if info.JobStatus.Canceled {
+				return nil, HTTPErrorWithInternal(ErrorFailedToDepsolve, err)
+			}
+
+			if !info.JobStatus.Finished.IsZero() {
+				break
+			}
+		}
+
+		select {
+		case <-ctx.Done():
+			return nil, HTTPErrorWithInternal(ErrorFailedToDepsolve, fmt.Errorf("Search job %q timed out", searchJobID))
+		default:
+		}
+	}
+
+	return result.Packages, nil
+}