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[AZ-374] Refactor C21: named GoogleMapsTiles HttpClient in DI

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- Register IHttpClientFactory named client "GoogleMapsTiles" inside
  AddTileDownloader() with User-Agent and 100s timeout (preserves
  HttpClient's implicit default).
- Resolve the same named client from all three CreateClient() call
  sites in GoogleMapsDownloaderV2 (session token, single-tile,
  batch-tile retry lambda) and drop the duplicated per-call
  UserAgent.ParseAdd setup.
- Expose USER_AGENT, the client name, and the timeout as internal
  consts on GoogleMapsDownloaderV2 so the extension and the
  downloader share one source of truth.
- Add AC test that builds the DI container, resolves the named
  client, and asserts both the User-Agent header and the timeout.
- Archive AZ-374 task file: todo/ -> done/.

175 unit + 5 smoke pass.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
2026-05-11 04:11:57 +03:00
parent 1ca8c80d7b
commit 89b4bfd245
4 changed files with 36 additions and 6 deletions
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SatelliteProvider.Services.TileDownloader/GoogleMapsDownloaderV2.cs
+6 -6
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@@ -14,7 +14,9 @@ namespace SatelliteProvider.Services.TileDownloader;
public class GoogleMapsDownloaderV2 : ISatelliteDownloader
{
private const string TILE_URL_TEMPLATE = "https://mt{0}.google.com/vt/lyrs=s&x={1}&y={2}&z={3}&token={4}";
private const string USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36";
internal const string UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.0.0 Safari/537.36";
internal const string GoogleMapsTilesClientName = "GoogleMapsTiles";
internal const int DefaultHttpClientTimeoutSeconds = 100;
private readonly ILogger<GoogleMapsDownloaderV2> _logger;
private readonly string _apiKey;
@@ -46,7 +48,7 @@ public class GoogleMapsDownloaderV2 : ISatelliteDownloader
private async Task<string?> GetSessionToken()
{
var url = $"https://tile.googleapis.com/v1/createSession?key={_apiKey}";
using var httpClient = _httpClientFactory.CreateClient();
using var httpClient = _httpClientFactory.CreateClient(GoogleMapsTilesClientName);
try
{
var str = JsonConvert.SerializeObject(new { mapType = "satellite" });
@@ -102,8 +104,7 @@ public class GoogleMapsDownloaderV2 : ISatelliteDownloader
var imageBytes = await ExecuteWithRetryAsync(async () =>
{
using var httpClient = _httpClientFactory.CreateClient();
httpClient.DefaultRequestHeaders.UserAgent.ParseAdd(USER_AGENT);
using var httpClient = _httpClientFactory.CreateClient(GoogleMapsTilesClientName);
var response = await httpClient.GetAsync(url, token);
@@ -366,8 +367,7 @@ public class GoogleMapsDownloaderV2 : ISatelliteDownloader
var imageBytes = await ExecuteWithRetryAsync(async () =>
{
using var httpClient = _httpClientFactory.CreateClient();
httpClient.DefaultRequestHeaders.UserAgent.ParseAdd(USER_AGENT);
using var httpClient = _httpClientFactory.CreateClient(GoogleMapsTilesClientName);
var response = await httpClient.GetAsync(url, token);