680 lines
28 KiB
C++
680 lines
28 KiB
C++
#include <filesystem>
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#include <iostream>
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#include <fstream>
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#include <vector>
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#include <string>
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#include <algorithm>
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#include <iomanip>
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#include <map>
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#include <chrono>
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#include <libassert/assert.hpp>
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#include "utils/envmanager.hpp"
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#include "utils/directories.hpp"
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#include "utils/utils.hpp"
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#include "utils/output.hpp"
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#include "templates.hpp"
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#include "config.hpp"
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#include "utils/hash.hpp"
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namespace dropshell {
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// ------------------------------------------------------------------------------------------------
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// template_source_local
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// ------------------------------------------------------------------------------------------------
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std::set<std::string> template_source_local::get_template_list() {
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std::set<std::string> templates;
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// Helper function to add templates from a directory
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auto add_templates_from_dir = [&templates](const std::string& dir_path) {
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if (!std::filesystem::exists(dir_path))
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return;
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for (const auto& entry : std::filesystem::directory_iterator(dir_path))
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if (entry.is_directory())
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templates.insert(entry.path().filename().string());
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};
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add_templates_from_dir(mLocalPath);
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return templates;
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}
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bool template_source_local::has_template(const std::string& template_name) {
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std::filesystem::path path = mLocalPath / template_name;
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return (std::filesystem::exists(path));
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}
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bool template_source_local::template_command_exists(const std::string& template_name, const std::string& command) {
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std::filesystem::path path = mLocalPath / template_name / (command+".sh");
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return std::filesystem::exists(path);
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}
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template_info template_source_local::get_template_info(const std::string& template_name) {
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std::filesystem::path path = mLocalPath / template_name;
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if (!std::filesystem::exists(path))
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return template_info();
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return template_info(
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template_name,
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mLocalPath.string(),
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path
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);
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}
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// ------------------------------------------------------------------------------------------------
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// template_source_registry
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// ------------------------------------------------------------------------------------------------
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std::set<std::string> template_source_registry::get_template_list()
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{
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// Query the registry for available templates
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// The registry should return a JSON list of available templates
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std::string list_url = mRegistry.url + "/dir";
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nlohmann::json json_response;
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// For HTTPS URLs, use curl to fetch the JSON
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if (list_url.substr(0, 8) == "https://") {
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std::string temp_file = "/tmp/dropshell_registry_list_" + std::to_string(std::chrono::system_clock::now().time_since_epoch().count());
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std::string cmd = "curl -fsSL " + quote(list_url) + " -o " + quote(temp_file) + " 2>/dev/null";
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int result = system(cmd.c_str());
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if (result == 0) {
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try {
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std::ifstream file(temp_file);
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if (file.is_open()) {
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file >> json_response;
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file.close();
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}
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} catch (...) {
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// Failed to parse JSON
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}
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std::filesystem::remove(temp_file);
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}
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} else {
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json_response = get_json_from_url(list_url);
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}
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std::set<std::string> templates;
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if (json_response.is_null() || !json_response.contains("entries")) {
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warning << "Failed to get template list from registry: " << mRegistry.name << std::endl;
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return templates;
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}
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// Parse the entries array to extract unique template names
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for (const auto& entry : json_response["entries"]) {
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if (entry.contains("labeltags")) {
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for (const auto& label : entry["labeltags"]) {
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// Extract template name from label (format: "template:version")
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std::string label_str = label.get<std::string>();
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size_t colon_pos = label_str.find(':');
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if (colon_pos != std::string::npos) {
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std::string template_name = label_str.substr(0, colon_pos);
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templates.insert(template_name);
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}
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}
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}
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}
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return templates;
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}
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bool template_source_registry::has_template(const std::string& template_name)
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{
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// First check if we have it cached
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std::filesystem::path cache_dir = get_cache_dir();
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std::filesystem::path template_cache_dir = cache_dir / template_name;
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if (std::filesystem::exists(template_cache_dir)) {
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info << "Template '" << template_name << "' found in cache at " << template_cache_dir << std::endl;
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return true;
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}
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// Check if template exists in registry
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std::string check_url = mRegistry.url + "/exists/" + template_name + ":latest";
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info << "Checking registry for template '" << template_name << "' at: " << check_url << std::endl;
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// For HTTPS URLs, use curl to fetch the JSON
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nlohmann::json json_response;
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if (check_url.substr(0, 8) == "https://") {
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// Create a temporary file for the response
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std::string temp_file = "/tmp/dropshell_registry_check_" + std::to_string(std::chrono::system_clock::now().time_since_epoch().count());
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std::string cmd = "curl -fsSL " + quote(check_url) + " -o " + quote(temp_file) + " 2>/dev/null";
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int result = system(cmd.c_str());
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if (result == 0) {
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try {
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std::ifstream file(temp_file);
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if (file.is_open()) {
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file >> json_response;
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file.close();
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}
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} catch (const std::exception& e) {
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warning << "Failed to parse JSON response from " << check_url << ": " << e.what() << std::endl;
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}
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std::filesystem::remove(temp_file);
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} else {
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warning << "curl command failed for URL: " << check_url << " (exit code: " << result << ")" << std::endl;
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// Try without silent mode to see what's happening
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std::string debug_cmd = "curl -L " + quote(check_url) + " 2>&1";
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info << "Debugging with: " << debug_cmd << std::endl;
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system(debug_cmd.c_str());
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return std::filesystem::exists(template_cache_dir);
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}
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} else {
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json_response = get_json_from_url(check_url);
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}
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if (!json_response.is_null() && json_response.contains("exists")) {
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bool exists = json_response["exists"].get<bool>();
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info << "Registry response: template '" << template_name << "' exists = " << (exists ? "true" : "false") << std::endl;
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return exists;
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}
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warning << "Failed to get valid response from registry for template: " << template_name << std::endl;
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// If registry check failed but we have cache, use cache
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return std::filesystem::exists(template_cache_dir);
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}
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template_info template_source_registry::get_template_info(const std::string& template_name)
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{
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// Get cache directory
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std::filesystem::path cache_dir = get_cache_dir();
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std::filesystem::path template_cache_dir = cache_dir / template_name;
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std::filesystem::path template_json_file = cache_dir / (template_name + ".json");
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// Create cache directory if it doesn't exist
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if (!std::filesystem::exists(cache_dir)) {
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std::filesystem::create_directories(cache_dir);
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}
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// If we have a cached version and can't reach the registry, use the cache
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bool have_cache = std::filesystem::exists(template_cache_dir) && std::filesystem::exists(template_json_file);
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// Check if template exists (in cache or registry)
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if (!has_template(template_name)) {
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return template_info();
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}
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// Get metadata from registry to check version
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std::string meta_url = mRegistry.url + "/meta/" + template_name + ":latest";
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nlohmann::json registry_metadata;
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// For HTTPS URLs, use curl to fetch the JSON
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if (meta_url.substr(0, 8) == "https://") {
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std::string temp_file = "/tmp/dropshell_registry_meta_" + std::to_string(std::chrono::system_clock::now().time_since_epoch().count());
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std::string cmd = "curl -fsSL " + quote(meta_url) + " -o " + quote(temp_file) + " 2>/dev/null";
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int result = system(cmd.c_str());
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if (result == 0) {
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try {
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std::ifstream file(temp_file);
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if (file.is_open()) {
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file >> registry_metadata;
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file.close();
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}
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} catch (...) {
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// Failed to parse JSON
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}
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std::filesystem::remove(temp_file);
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}
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} else {
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registry_metadata = get_json_from_url(meta_url);
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}
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if (registry_metadata.is_null()) {
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// If we can't get metadata from registry but have cache, use cache
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if (have_cache) {
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info << "Registry unavailable, using cached template: " << template_name << std::endl;
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return template_info(
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template_name,
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"Registry: " + mRegistry.name + " (cached)",
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template_cache_dir
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);
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}
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warning << "Failed to get metadata for template: " << template_name << std::endl;
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return template_info();
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}
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// Check if we need to download/update the template
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bool need_download = true;
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std::string registry_version = "unknown";
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std::string registry_hash = "";
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// Extract version and hash from registry metadata
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if (registry_metadata.contains("metadata")) {
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auto& metadata = registry_metadata["metadata"];
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if (metadata.contains("version")) {
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registry_version = metadata["version"].get<std::string>();
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}
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}
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if (registry_metadata.contains("hash")) {
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registry_hash = registry_metadata["hash"].get<std::string>();
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}
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// Check if we have a cached version
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if (std::filesystem::exists(template_json_file)) {
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try {
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std::ifstream cache_file(template_json_file);
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nlohmann::json cache_json;
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cache_file >> cache_json;
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cache_file.close();
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// Compare versions or hashes
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if (cache_json.contains("hash") && !registry_hash.empty()) {
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if (cache_json["hash"].get<std::string>() == registry_hash) {
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need_download = false;
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}
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} else if (cache_json.contains("version")) {
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std::string cached_version = cache_json["version"].get<std::string>();
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if (cached_version == registry_version) {
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need_download = false;
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}
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}
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} catch (...) {
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// If reading cache fails, re-download
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need_download = true;
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}
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}
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// Download and extract if needed
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if (need_download) {
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info << "Downloading template '" << template_name << "' from registry..." << std::endl;
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// Download the .tgz file
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std::string download_url = mRegistry.url + "/" + template_name + ":latest";
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std::filesystem::path temp_tgz = cache_dir / (template_name + ".tgz");
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if (!download_file(download_url, temp_tgz.string())) {
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error << "Failed to download template: " << template_name << std::endl;
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return template_info();
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}
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// Remove old template directory if it exists
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if (std::filesystem::exists(template_cache_dir)) {
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std::filesystem::remove_all(template_cache_dir);
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}
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// Extract the .tgz file
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std::string extract_cmd = "tar -xzf " + quote(temp_tgz.string()) + " -C " + quote(cache_dir.string());
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int result = system(extract_cmd.c_str());
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if (result != 0) {
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error << "Failed to extract template: " << template_name << std::endl;
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std::filesystem::remove(temp_tgz);
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return template_info();
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}
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// Clean up the .tgz file
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std::filesystem::remove(temp_tgz);
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// Generate .template_info.env if it doesn't exist
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std::filesystem::path template_info_env_path = template_cache_dir / "config" / filenames::template_info_env;
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if (!std::filesystem::exists(template_info_env_path)) {
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// Create config directory if needed
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std::filesystem::create_directories(template_cache_dir / "config");
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// Write .template_info.env file
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std::ofstream info_file(template_info_env_path);
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info_file << "# Template information" << std::endl;
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info_file << "TEMPLATE=" << template_name << std::endl;
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info_file << "TEMPLATE_SOURCE=registry" << std::endl;
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info_file << "TEMPLATE_REGISTRY=" << mRegistry.name << std::endl;
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info_file << "TEMPLATE_VERSION=" << registry_version << std::endl;
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if (!registry_hash.empty()) {
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info_file << "TEMPLATE_HASH=" << registry_hash << std::endl;
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}
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info_file.close();
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}
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// Update cache JSON file
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nlohmann::json cache_json;
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cache_json["template"] = template_name;
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cache_json["version"] = registry_version;
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cache_json["hash"] = registry_hash;
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cache_json["registry"] = mRegistry.name;
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cache_json["last_updated"] = std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
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std::ofstream cache_file(template_json_file);
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cache_file << cache_json.dump(4);
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cache_file.close();
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info << "Template '" << template_name << "' downloaded and cached successfully" << std::endl;
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}
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// Return template info pointing to the cached template
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return template_info(
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template_name,
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"Registry: " + mRegistry.name,
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template_cache_dir
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);
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}
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bool template_source_registry::template_command_exists(const std::string& template_name, const std::string& command)
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{
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// Get template info to ensure it's downloaded and cached
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auto tinfo = get_template_info(template_name);
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if (!tinfo.is_set()) {
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return false;
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}
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// Check if the command script exists in the cached template
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std::filesystem::path script_path = tinfo.local_template_path() / (command + ".sh");
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return std::filesystem::exists(script_path);
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}
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std::filesystem::path template_source_registry::get_cache_dir()
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{
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return localpath::template_cache();
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}
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// ------------------------------------------------------------------------------------------------
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// template_manager
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// ------------------------------------------------------------------------------------------------
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void template_manager::list_templates() const {
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ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
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auto templates = get_template_list();
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if (templates.empty()) {
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std::cout << "No templates found." << std::endl;
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return;
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}
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std::cout << "Available templates:" << std::endl;
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// print templates.
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std::cout << std::string(60, '-') << std::endl;
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bool first = true;
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for (const auto& t : templates) {
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std::cout << (first ? "" : ", ") << t;
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first = false;
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}
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std::cout << std::endl;
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std::cout << std::string(60, '-') << std::endl;
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}
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std::set<std::string> template_manager::get_template_list() const
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{
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ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
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std::set<std::string> templates;
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for (const auto& source : mSources) {
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auto source_templates = source->get_template_list();
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templates.insert(source_templates.begin(), source_templates.end());
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}
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return templates;
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}
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bool template_manager::has_template(const std::string &template_name) const
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{
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ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
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template_source_interface* source = get_source(template_name);
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if (!source)
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return false;
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return true;
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}
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template_info template_manager::get_template_info(const std::string &template_name) const
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{
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ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
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template_source_interface* source = get_source(template_name);
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if (source)
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return source->get_template_info(template_name);
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// fail
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return template_info();
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}
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bool template_manager::template_command_exists(const std::string &template_name, const std::string &command) const
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{
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ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
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template_source_interface* source = get_source(template_name);
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if (!source) {
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error << "Template '" << template_name << "' not found" << std::endl;
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return false;
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}
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return source->template_command_exists(template_name, command);
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}
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bool template_manager::create_template(const std::string &template_name) const
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{
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if (!legal_service_name(template_name)) {
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error << "Template name contains illegal characters: " << template_name << std::endl;
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return false;
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}
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// 1. Create a new directory in the user templates directory
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std::vector<std::string> local_server_definition_paths = gConfig().get_local_server_definition_paths();
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if (local_server_definition_paths.empty()) {
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error << "No local server definition paths found" << std::endl;
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info << "Run 'dropshell edit' to configure DropShell" << std::endl;
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return false;
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}
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auto tinfo = get_template_info(template_name);
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if (tinfo.is_set()) {
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error << "Template '" << template_name << "' already exists at " << tinfo.locationID() << std::endl;
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return false;
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}
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auto local_template_paths = gConfig().get_local_template_paths();
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if (local_template_paths.empty()) {
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error << "No local template paths found" << std::endl;
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info << "Run 'dropshell edit' to add one to the DropShell config" << std::endl;
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return false;
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}
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std::string new_template_path = local_template_paths[0] + "/" + template_name;
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// Create the new template directory
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std::filesystem::create_directories(new_template_path);
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// 2. Copy the example template from the system templates directory
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auto example_info = gTemplateManager().get_template_info("example-nginx");
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if (!example_info.is_set()) {
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error << "Example template not found" << std::endl;
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return false;
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}
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std::string example_template_path = example_info.local_template_path();
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// Copy all files from example template to new template
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for (const auto& entry : std::filesystem::recursive_directory_iterator(example_template_path)) {
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std::string relative_path = entry.path().string().substr(example_template_path.length());
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std::string target_path = new_template_path + relative_path;
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if (entry.is_directory()) {
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std::filesystem::create_directory(target_path);
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} else {
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std::filesystem::copy_file(entry.path(), target_path);
|
|
}
|
|
}
|
|
|
|
// modify the TEMPLATE=example line in the .template_info.env file to TEMPLATE=<template_name>
|
|
std::string search_string = "TEMPLATE=";
|
|
std::string replacement_line = "TEMPLATE=" + template_name;
|
|
std::string service_env_path = new_template_path + "/config/" + filenames::template_info_env;
|
|
if (!replace_line_in_file(service_env_path, search_string, replacement_line)) {
|
|
error << "Failed to replace TEMPLATE= line in the " << filenames::template_info_env <<" file" << std::endl;
|
|
return false;
|
|
}
|
|
|
|
// 3. Print out the README.txt file and the path
|
|
std::string readme_path = new_template_path + "/README.txt";
|
|
if (std::filesystem::exists(readme_path)) {
|
|
std::cout << "\nREADME contents:" << std::endl;
|
|
std::cout << std::string(60, '-') << std::endl;
|
|
|
|
std::ifstream readme_file(readme_path);
|
|
if (readme_file.is_open()) {
|
|
std::string line;
|
|
while (std::getline(readme_file, line)) {
|
|
std::cout << line << std::endl;
|
|
}
|
|
readme_file.close();
|
|
}
|
|
std::cout << std::string(60, '-') << std::endl;
|
|
}
|
|
|
|
std::cout << std::endl;
|
|
std::cout << "Template '" << template_name << "' created at " << new_template_path << std::endl;
|
|
return test_template(new_template_path);
|
|
}
|
|
|
|
void template_manager::load_sources()
|
|
{
|
|
ASSERT(mSources.empty(), "Template manager already loaded (sources are not empty).");
|
|
ASSERT(gConfig().is_config_set(), "Config not set.");
|
|
ASSERT(!mLoaded, "Template manager already loaded.");
|
|
|
|
// Add local template sources only if the paths exist and are directories
|
|
auto local_template_paths = gConfig().get_local_template_paths();
|
|
for (const auto& path : local_template_paths) {
|
|
if (std::filesystem::exists(path) && std::filesystem::is_directory(path)) {
|
|
mSources.push_back(std::make_unique<template_source_local>(path));
|
|
} else {
|
|
info << "Skipping non-existent or invalid local template path: " << path << std::endl;
|
|
}
|
|
}
|
|
|
|
// Add registry sources - these should always be added
|
|
auto registry_urls = gConfig().get_template_registry_urls();
|
|
info << "Loading " << registry_urls.size() << " template registry sources" << std::endl;
|
|
for (const auto& url : registry_urls) {
|
|
info << "Adding registry source: " << url.name << " at " << url.url << std::endl;
|
|
mSources.push_back(std::make_unique<template_source_registry>(url));
|
|
}
|
|
|
|
mLoaded = true;
|
|
}
|
|
|
|
void template_manager::print_sources() const
|
|
{
|
|
std::cout << "Template sources: ";
|
|
for (const auto& source : mSources) {
|
|
std::cout << "[" << source->get_description() << "] ";
|
|
}
|
|
std::cout << std::endl;
|
|
}
|
|
|
|
bool template_manager::required_file(std::string path, std::string template_name)
|
|
{
|
|
if (!std::filesystem::exists(path)) {
|
|
error << path << " file not found in template - REQUIRED." << template_name << std::endl;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
template_source_interface *template_manager::get_source(const std::string &template_name) const
|
|
{
|
|
ASSERT(mLoaded && mSources.size() > 0, "Template manager not loaded, or no template sources found.");
|
|
for (const auto& source : mSources) {
|
|
if (source->has_template(template_name)) {
|
|
return source.get();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool template_manager::test_template(const std::string &template_path)
|
|
{
|
|
if (template_path.empty())
|
|
return false;
|
|
|
|
if (!std::filesystem::exists(template_path))
|
|
return false;
|
|
|
|
std::string template_name = std::filesystem::path(template_path).filename().string();
|
|
|
|
std::vector<std::string> required_files = {
|
|
"config/" + filenames::service_env,
|
|
"config/" + filenames::template_info_env,
|
|
"install.sh",
|
|
"uninstall.sh"
|
|
};
|
|
|
|
for (const auto& file : required_files) {
|
|
if (!required_file(template_path + "/" + file, template_name))
|
|
return false;
|
|
|
|
// check if file is executable, if it ends in .sh
|
|
std::string suffix=".sh";
|
|
if (file.find(suffix) == file.size() - suffix.size())
|
|
{
|
|
std::filesystem::path path = template_path + "/" + file;
|
|
auto perms = std::filesystem::status(path).permissions();
|
|
if ((perms & std::filesystem::perms::owner_exec) == std::filesystem::perms::none)
|
|
error << file << " is not executable" << std::endl;
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------
|
|
// check TEMPLATE= line.
|
|
std::map<std::string, std::string> all_env_vars;
|
|
std::vector<std::string> env_files = {
|
|
"config/" + filenames::service_env,
|
|
"config/" + filenames::template_info_env
|
|
};
|
|
for (const auto& file : env_files) {
|
|
{ // load service.env from the service on this machine.
|
|
std::map<std::string, std::string> env_vars;
|
|
envmanager env_manager(template_path + "/" + file);
|
|
env_manager.load();
|
|
env_manager.get_all_variables(env_vars);
|
|
all_env_vars.merge(env_vars);
|
|
}
|
|
}
|
|
|
|
// determine template name.
|
|
auto it = all_env_vars.find("TEMPLATE");
|
|
if (it == all_env_vars.end()) {
|
|
error << "TEMPLATE variable not found in " << template_path << std::endl;
|
|
return false;
|
|
}
|
|
|
|
std::string env_template_name = it->second;
|
|
if (env_template_name.empty()) {
|
|
error << "TEMPLATE variable is empty in " << template_path << std::endl;
|
|
return false;
|
|
}
|
|
|
|
if (env_template_name != template_name) {
|
|
error << "TEMPLATE variable is wrong in " << template_path << std::endl;
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
template_manager & gTemplateManager()
|
|
{
|
|
static template_manager instance;
|
|
return instance;
|
|
}
|
|
|
|
template_info::template_info(const std::string &template_name, const std::string &location_id, const std::filesystem::path &local_template_path) :
|
|
mTemplateName(template_name),
|
|
mLocationID(location_id),
|
|
mTemplateLocalPath(local_template_path),
|
|
mTemplateValid(template_manager::test_template(local_template_path.string())),
|
|
mIsSet(!template_name.empty() && !location_id.empty() && !local_template_path.empty()),\
|
|
mHash(0)
|
|
{
|
|
if (!std::filesystem::exists(local_template_path))
|
|
{
|
|
error << "Template path does not exist: " << local_template_path << std::endl;
|
|
return;
|
|
}
|
|
|
|
mHash = hash_directory_recursive(local_template_path);
|
|
}
|
|
|
|
} // namespace dropshell
|