| 61 | |
| 62 | |
| 63 | Try<Nothing> Read::execute(int argc, char** argv) |
| 64 | { |
| 65 | flags.setUsageMessage( |
| 66 | "Usage: " + name() + " [options]\n" |
| 67 | "\n" |
| 68 | "This command is used to read the log.\n" |
| 69 | "\n"); |
| 70 | |
| 71 | // Configure the tool by parsing command line arguments. |
| 72 | if (argc > 0 && argv != nullptr) { |
| 73 | Try<flags::Warnings> load = flags.load(None(), argc, argv); |
| 74 | if (load.isError()) { |
| 75 | return Error(flags.usage(load.error())); |
| 76 | } |
| 77 | |
| 78 | if (flags.help) { |
| 79 | return Error(flags.usage()); |
| 80 | } |
| 81 | |
| 82 | process::initialize(); |
| 83 | logging::initialize(argv[0], false, flags); |
| 84 | |
| 85 | // Log any flag warnings (after logging is initialized). |
| 86 | foreach (const flags::Warning& warning, load->warnings) { |
| 87 | LOG(WARNING) << warning.message; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | if (flags.path.isNone()) { |
| 92 | return Error(flags.usage("Missing required flag --path")); |
| 93 | } |
| 94 | |
| 95 | // Setup the timeout if specified. |
| 96 | Option<Timeout> timeout = None(); |
| 97 | if (flags.timeout.isSome()) { |
| 98 | timeout = Timeout::in(flags.timeout.get()); |
| 99 | } |
| 100 | |
| 101 | Replica replica(flags.path.get()); |
| 102 | |
| 103 | // Get the beginning of the replica. |
| 104 | Future<uint64_t> begin = replica.beginning(); |
| 105 | if (timeout.isSome()) { |
| 106 | begin.await(timeout->remaining()); |
| 107 | } else { |
| 108 | begin.await(); |
| 109 | } |
| 110 | |
| 111 | if (begin.isPending()) { |
| 112 | return Error("Timed out while getting the beginning of the replica"); |
| 113 | } else if (begin.isDiscarded()) { |
| 114 | return Error( |
| 115 | "Failed to get the beginning of the replica (discarded future)"); |
| 116 | } else if (begin.isFailed()) { |
| 117 | return Error(begin.failure()); |
| 118 | } |
| 119 | |
| 120 | // Get the ending of the replica. |
no test coverage detected