[tools] Added cache tool

A tool for adding resources to a cache database, important for
adding fixtures to our render test cache database.

1 files changed, 97 insertions, 0 deletions

diff --git a/bin/cache.cpp b/bin/cache.cpp
new file mode 100644
index 0000000000..eee1d61b32
--- /dev/null
+++ b/bin/cache.cpp
@@ -0,0 +1,97 @@
+#include <mbgl/storage/default_file_source.hpp>
+#include <mbgl/storage/resource.hpp>
+#include <mbgl/util/chrono.hpp>
+#include <mbgl/util/run_loop.hpp>
+
+#include <args.hxx>
+#include <mapbox/io.hpp>
+
+#include <fstream>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+int main(int argc, char* argv[]) {
+    args::ArgumentParser p("Mapbox GL cache tool", "");
+    args::HelpFlag helpFlag(p, "help", "Display this help menu", {'h'});
+
+    args::ValueFlag<std::string> urlValue(p, "URL", "Resource URL (required)", {'u'}, args::Options::Required);
+    args::ValueFlag<std::string> cacheValue(
+        p, "cache", "Path to the cache database (required)", {'c'}, args::Options::Required);
+    args::ValueFlag<std::string> dataValue(
+        p, "data", "Path to the resource data (required)", {'d'}, args::Options::Required);
+    args::ValueFlag<std::string> etagValue(p, "etag", "Cache eTag, none otherwise", {'t'});
+    args::ValueFlag<unsigned long> expiresValue(p, "expires", "Expires date, will use 'now' otherwise", {'e'});
+    args::ValueFlag<unsigned long> modifiedValue(p, "modified", "Modified date, will use 'now' otherwise", {'m'});
+
+    std::unordered_map<std::string, mbgl::Resource::Kind> typeMap{{"glyphs", mbgl::Resource::Glyphs},
+                                                                  {"image", mbgl::Resource::Image},
+                                                                  {"source", mbgl::Resource::Source},
+                                                                  {"sprite-image", mbgl::Resource::SpriteImage},
+                                                                  {"sprite-json", mbgl::Resource::SpriteJSON},
+                                                                  {"style", mbgl::Resource::Style},
+                                                                  {"tile", mbgl::Resource::Tile}};
+
+    std::string typeHelp("One of the following (required):");
+    for (auto key : typeMap) {
+        typeHelp += " " + key.first;
+    }
+
+    args::MapFlag<std::string, mbgl::Resource::Kind> typeFlag(
+        p, "type", typeHelp, {"type"}, typeMap, args::Options::Required);
+
+    args::Group tileIdGroup(p, "Coordinates (required for 'tile')", args::Group::Validators::AllOrNone);
+    args::ValueFlag<int32_t> xValueFlag(tileIdGroup, "x", "Tile x coordinate", {'x'});
+    args::ValueFlag<int32_t> yValueFlag(tileIdGroup, "y", "Tile y coordinate", {'y'});
+    args::ValueFlag<int32_t> zValueFlag(tileIdGroup, "z", "The zoom level", {'z'});
+
+    try {
+        p.ParseCLI(argc, argv);
+    } catch (const args::Help&) {
+        std::cout << p;
+        exit(0);
+    } catch (const args::ParseError& e) {
+        std::cerr << e.what() << std::endl;
+        std::cerr << p;
+        exit(1);
+    } catch (const args::ValidationError& e) {
+        std::cerr << e.what() << std::endl;
+        std::cerr << p;
+        exit(2);
+    }
+
+    auto file = mapbox::base::io::readFile(args::get(dataValue));
+    if (!file) {
+        std::cerr << file.error() << std::endl;
+        exit(3);
+    }
+
+    mbgl::Response response;
+    response.data = std::make_shared<std::string>(*file);
+    response.etag = etagValue ? args::get(etagValue) : std::string();
+    response.expires = expiresValue ? mbgl::Timestamp(mbgl::Seconds(args::get(expiresValue))) : mbgl::util::now();
+    response.modified = modifiedValue ? mbgl::Timestamp(mbgl::Seconds(args::get(modifiedValue))) : mbgl::util::now();
+
+    mbgl::Resource resource(args::get(typeFlag), args::get(urlValue));
+
+    if (args::get(typeFlag) == mbgl::Resource::Tile) {
+        if (!xValueFlag || !yValueFlag || !zValueFlag) {
+            std::cerr << "Error: -x, -y and -z must be provided for tiles" << std::endl;
+            exit(1);
+        }
+
+        resource.tileData = {{args::get(urlValue),
+                              1,
+                              args::get(xValueFlag),
+                              args::get(yValueFlag),
+                              static_cast<int8_t>(args::get(zValueFlag))}};
+    }
+
+    mbgl::util::RunLoop loop;
+    mbgl::DefaultFileSource fileSource(args::get(cacheValue), ".");
+
+    fileSource.put(resource, response);
+
+    return 0;
+}