266 lines
10 KiB
C++
266 lines
10 KiB
C++
#include "services.hpp"
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#include "utils/envmanager.hpp"
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#include "utils/directories.hpp"
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#include "templates.hpp"
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#include "config.hpp"
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#include "utils/utils.hpp"
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#include <libassert/assert.hpp>
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#include <iostream>
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#include <filesystem>
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namespace fs = std::filesystem;
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namespace dropshell
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{
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bool SIvalid(const LocalServiceInfo &service_info)
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{
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return !service_info.service_name.empty() &&
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!service_info.template_name.empty() &&
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!service_info.local_service_path.empty() &&
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!service_info.local_template_path.empty() &&
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!service_info.user.empty();
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}
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std::vector<LocalServiceInfo> get_server_services_info(const std::string &server_name, bool skip_update)
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{
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std::vector<LocalServiceInfo> services;
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if (server_name.empty())
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return services;
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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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{
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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 services;
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}
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for (const auto &server_definition_path : local_server_definition_paths)
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{
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fs::path serverpath = server_definition_path + "/" + server_name;
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if (fs::exists(serverpath)) // service is on that server...
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for (const auto &entry : fs::directory_iterator(serverpath))
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{
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if (fs::is_directory(entry))
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{
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std::string dirname = entry.path().filename().string();
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if (dirname.empty() || dirname[0] == '.' || dirname[0] == '_')
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continue;
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auto service = get_service_info(server_name, dirname, skip_update);
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if (!service.local_service_path.empty())
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services.push_back(service);
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else
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warning << "Failed to get service info for " << dirname << " on server " << server_name << std::endl;
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}
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} // end of for
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}
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return services;
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}
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bool get_bool_variable(const ordered_env_vars &variables, const std::string &variable_name)
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{
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auto it = find_var(variables, variable_name);
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if (it == variables.end())
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{
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error << "Variable " << variable_name << " not found in the service " << filenames::template_info_env << std::endl;
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return false;
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}
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return it->second == "true";
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}
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LocalServiceInfo get_service_info(const std::string &server_name, const std::string &service_name, bool skip_update)
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{
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LocalServiceInfo service;
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if (server_name.empty() || service_name.empty())
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return LocalServiceInfo();
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if (!legal_service_name(service_name))
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return LocalServiceInfo();
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service.service_name = service_name;
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service.local_service_path = localpath::service(server_name, service_name);
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if (service.local_service_path.empty())
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return LocalServiceInfo();
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// check the service directory exists.
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if (!fs::exists(service.local_service_path))
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{
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warning << "Service directory not found: " << service.local_service_path << std::endl;
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return LocalServiceInfo();
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}
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// now set the template name and path.
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ordered_env_vars variables;
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if (!get_all_service_env_vars(server_name, service_name, variables))
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return LocalServiceInfo();
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{ // confirm TEMPLATE is defined.
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auto it = find_var(variables, "TEMPLATE");
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if (it == variables.end())
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{
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error << "TEMPLATE variable not defined in service " << service_name << " on server " << server_name << std::endl;
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return LocalServiceInfo();
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}
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service.template_name = it->second;
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}
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template_info tinfo = gTemplateManager().get_template_info(service.template_name,skip_update);
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if (!tinfo.is_set())
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{
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// Template not found - this means it's not available locally OR from registry
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error << "Template '" << service.template_name << "' not found locally or in registry" << std::endl;
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return LocalServiceInfo();
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}
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// Template is available (either locally or downloaded from registry)
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service.local_template_path = tinfo.local_template_path();
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{ // set the user.
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auto it = find_var(variables, "SSH_USER");
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if (it == variables.end())
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{
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error << "SSH_USER variable not defined in service " << service_name << " on server " << server_name << std::endl;
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return LocalServiceInfo();
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}
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service.user = it->second;
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}
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// set the host root and docker requirements.
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service.requires_host_root = get_bool_variable(variables, "REQUIRES_HOST_ROOT");
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service.requires_docker = get_bool_variable(variables, "REQUIRES_DOCKER");
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service.requires_docker_root = get_bool_variable(variables, "REQUIRES_DOCKER_ROOT");
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return service;
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}
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std::set<std::string> get_used_commands(const std::string &server_name, const std::string &service_name)
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{
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std::set<std::string> commands;
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if (server_name.empty() || service_name.empty())
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return commands;
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auto service_info = get_service_info(server_name, service_name);
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if (service_info.local_template_path.empty())
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{
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error << "Service not found: " << service_name << std::endl;
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return commands;
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}
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// iterate over all files in the template path, and add the command name to the set.
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// commands are .sh files that don't begin with _
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for (const auto &entry : fs::directory_iterator(service_info.local_template_path))
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{
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if (fs::is_regular_file(entry) && entry.path().extension() == ".sh" && (entry.path().filename().string().rfind("_", 0) != 0))
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commands.insert(entry.path().stem().string());
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}
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return commands;
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}
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std::set<std::string> list_backups(const std::string &server_name, const std::string &service_name)
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{
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std::set<std::string> backups;
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if (server_name.empty() || service_name.empty())
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return backups;
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// need to find the template for the service.
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auto service_info = get_service_info(server_name, service_name);
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if (service_info.local_template_path.empty())
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{
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error << "Service not found: " << service_name << std::endl;
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return backups;
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}
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std::string backups_dir = localpath::backups();
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if (backups_dir.empty())
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return backups;
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if (fs::exists(backups_dir))
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{
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for (const auto &entry : fs::directory_iterator(backups_dir))
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{
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if (fs::is_regular_file(entry) && entry.path().extension() == ".tgz")
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if (entry.path().filename().string().find(service_info.template_name) != std::string::npos)
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{
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backups.insert(entry.path().filename().string());
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}
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}
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}
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return backups;
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}
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bool get_all_service_env_vars(const std::string &server_name, const std::string &service_name, ordered_env_vars &all_env_vars)
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{
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clear_vars(all_env_vars);
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if (localpath::service(server_name, service_name).empty() || !fs::exists(localpath::service(server_name, service_name)))
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{
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error << "Service not found: " << service_name << " on server " << server_name << std::endl;
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return false;
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}
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// Lambda function to load environment variables from a file
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auto load_env_file = [&all_env_vars](const std::string &file)
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{
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if (!file.empty() && std::filesystem::exists(file))
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{
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ordered_env_vars env_vars;
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envmanager env_manager(file);
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env_manager.load();
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env_manager.get_all_variables(env_vars);
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merge_vars(all_env_vars, env_vars);
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}
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else
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warning << "Expected environment file not found: " << file << std::endl;
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};
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// add in some simple variables first, as others below may depend on/use these in bash.
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set_var(all_env_vars, "SERVER", server_name);
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set_var(all_env_vars, "SERVICE", service_name);
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set_var(all_env_vars, "DOCKER_CLI_HINTS", "false"); // turn off docker junk.
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// Load environment files
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load_env_file(localfile::service_env(server_name, service_name));
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std::string template_name = get_var(all_env_vars, "TEMPLATE");
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if (template_name.empty())
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{
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error << "TEMPLATE variable not defined in service " << service_name << " on server " << server_name << std::endl;
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return false;
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}
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auto tinfo = gTemplateManager().get_template_info(template_name, true); // skip updates.
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if (!tinfo.is_set())
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{
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// Template is not available locally or from registry
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error << "Template '" << template_name << "' not found locally or in registry" << std::endl;
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return false;
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}
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ASSERT(std::filesystem::exists(tinfo.local_template_info_env_path()));
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load_env_file(tinfo.local_template_info_env_path());
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std::string user = get_var(all_env_vars, "SSH_USER");
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if (user.empty())
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{
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error << "SSH_USER variable not defined in service " << service_name << " on server " << server_name << std::endl;
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info << "This variable definition is always required, and usually set in the "<<filenames::service_env << " file." << std::endl;
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info << "Please check " << localfile::service_env(server_name, service_name) << std::endl;
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return false;
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}
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// more additional, these depend on others above.
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set_var(all_env_vars, "CONFIG_PATH", remotepath(server_name, user).service_config(service_name));
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set_var(all_env_vars, "AGENT_PATH", remotepath(server_name, user).agent());
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return true;
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}
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} // namespace dropshell
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