1 files changed, 395 insertions, 0 deletions
diff --git a/src/testing/testing_api_cmd_system_start.c b/src/testing/testing_api_cmd_system_start.c
new file mode 100644
index 000000000..541ad75c1
--- /dev/null
+++ b/src/testing/testing_api_cmd_system_start.c
@@ -0,0 +1,395 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2023 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3, or (at your
+  option) any later version.
+
+  TALER is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not,
+  see <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file testing/testing_api_cmd_system_start.c
+ * @brief run taler-benchmark-setup.sh command
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_signatures.h"
+#include "taler_testing_lib.h"
+
+
+/**
+ * State for a "system" CMD.
+ */
+struct SystemState
+{
+
+  /**
+   * System process.
+   */
+  struct GNUNET_OS_Process *system_proc;
+
+  /**
+   * Input pipe to @e system_proc, used to keep the
+   * process alive until we are done.
+   */
+  struct GNUNET_DISK_PipeHandle *pipe_in;
+
+  /**
+   * Output pipe to @e system_proc, used to find out
+   * when the services are ready.
+   */
+  struct GNUNET_DISK_PipeHandle *pipe_out;
+
+  /**
+   * Task reading from @e pipe_in.
+   */
+  struct GNUNET_SCHEDULER_Task *reader;
+
+  /**
+   * Waiting for child to die.
+   */
+  struct GNUNET_ChildWaitHandle *cwh;
+
+  /**
+   * Our interpreter state.
+   */
+  struct TALER_TESTING_Interpreter *is;
+
+  /**
+   * NULL-terminated array of command-line arguments.
+   */
+  char **args;
+
+  /**
+   * Current input buffer, 0-terminated.  Contains the last 15 bytes of input
+   * so we can search them again for the "<<READY>>" tag.
+   */
+  char ibuf[16];
+
+  /**
+   * Did we find the ready tag?
+   */
+  bool ready;
+
+  /**
+   * Is the child process still running?
+   */
+  bool active;
+};
+
+
+/**
+ * Defines a GNUNET_ChildCompletedCallback which is sent back
+ * upon death or completion of a child process.
+ *
+ * @param cls our `struct SystemState *`
+ * @param type type of the process
+ * @param exit_code status code of the process
+ */
+static void
+setup_terminated (void *cls,
+                  enum GNUNET_OS_ProcessStatusType type,
+                  long unsigned int exit_code)
+{
+  struct SystemState *as = cls;
+
+  as->cwh = NULL;
+  as->active = false;
+  if (NULL != as->reader)
+  {
+    GNUNET_SCHEDULER_cancel (as->reader);
+    as->reader = NULL;
+  }
+  if (! as->ready)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Launching Taler system failed: %d/%llu\n",
+                (int) type,
+                (unsigned long long) exit_code);
+    TALER_TESTING_interpreter_fail (as->is);
+    return;
+  }
+}
+
+
+/**
+ * Start helper to read from stdout of child.
+ *
+ * @param as our system state
+ */
+static void
+start_reader (struct SystemState *as);
+
+
+static void
+read_stdout (void *cls)
+{
+  struct SystemState *as = cls;
+  const struct GNUNET_DISK_FileHandle *fh;
+  char buf[1024 * 10];
+  ssize_t ret;
+  size_t off = 0;
+
+  as->reader = NULL;
+  strcpy (buf,
+          as->ibuf);
+  off = strlen (buf);
+  fh = GNUNET_DISK_pipe_handle (as->pipe_out,
+                                GNUNET_DISK_PIPE_END_READ);
+  ret = GNUNET_DISK_file_read (fh,
+                               &buf[off],
+                               sizeof (buf) - off);
+  if (-1 == ret)
+  {
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
+                         "read");
+    TALER_TESTING_interpreter_fail (as->is);
+    return;
+  }
+  if (0 == ret)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                "Child closed stdout\n");
+    return;
+  }
+  /* forward log, except single '.' outputs */
+  if ( (1 != ret) ||
+       ('.' != buf[off]) )
+    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+                "TUS: %.*s\n",
+                (int) ret,
+                &buf[off]);
+  start_reader (as);
+  off += ret;
+  if (as->ready)
+  {
+    /* already done */
+    return;
+  }
+  if (NULL !=
+      memmem (buf,
+              off,
+              "\n<<READY>>\n",
+              strlen ("\n<<READY>>\n")))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                "Taler system UP\n");
+    as->ready = true;
+    TALER_TESTING_interpreter_next (as->is);
+    return;
+  }
+
+  {
+    size_t mcpy;
+
+    mcpy = GNUNET_MIN (off,
+                       sizeof (as->ibuf) - 1);
+    memcpy (as->ibuf,
+            &buf[off - mcpy],
+            mcpy);
+    as->ibuf[mcpy] = '\0';
+  }
+}
+
+
+static void
+start_reader (struct SystemState *as)
+{
+  const struct GNUNET_DISK_FileHandle *fh;
+
+  GNUNET_assert (NULL == as->reader);
+  fh = GNUNET_DISK_pipe_handle (as->pipe_out,
+                                GNUNET_DISK_PIPE_END_READ);
+  as->reader = GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+                                               fh,
+                                               &read_stdout,
+                                               as);
+}
+
+
+/**
+ * Run the command.  Use the `taler-exchange-system' program.
+ *
+ * @param cls closure.
+ * @param cmd command being run.
+ * @param is interpreter state.
+ */
+static void
+system_run (void *cls,
+            const struct TALER_TESTING_Command *cmd,
+            struct TALER_TESTING_Interpreter *is)
+{
+  struct SystemState *as = cls;
+
+  (void) cmd;
+  as->is = is;
+  as->pipe_in = GNUNET_DISK_pipe (GNUNET_DISK_PF_BLOCKING_READ);
+  GNUNET_assert (NULL != as->pipe_in);
+  as->pipe_out = GNUNET_DISK_pipe (GNUNET_DISK_PF_NONE);
+  GNUNET_assert (NULL != as->pipe_out);
+  as->system_proc
+    = GNUNET_OS_start_process_vap (
+        GNUNET_OS_INHERIT_STD_ERR,
+        as->pipe_in, as->pipe_out, NULL,
+        "taler-unified-setup.sh",
+        as->args);
+  if (NULL == as->system_proc)
+  {
+    GNUNET_break (0);
+    TALER_TESTING_interpreter_fail (is);
+    return;
+  }
+  as->active = true;
+  start_reader (as);
+  as->cwh = GNUNET_wait_child (as->system_proc,
+                               &setup_terminated,
+                               as);
+}
+
+
+/**
+ * Free the state of a "system" CMD, and possibly kill its
+ * process if it did not terminate correctly.
+ *
+ * @param cls closure.
+ * @param cmd the command being freed.
+ */
+static void
+system_cleanup (void *cls,
+                const struct TALER_TESTING_Command *cmd)
+{
+  struct SystemState *as = cls;
+
+  (void) cmd;
+  if (NULL != as->cwh)
+  {
+    GNUNET_wait_child_cancel (as->cwh);
+    as->cwh = NULL;
+  }
+  if (NULL != as->reader)
+  {
+    GNUNET_SCHEDULER_cancel (as->reader);
+    as->reader = NULL;
+  }
+  if (NULL != as->system_proc)
+  {
+    if (as->active)
+    {
+      GNUNET_break (0 ==
+                    GNUNET_OS_process_kill (as->system_proc,
+                                            SIGTERM));
+      GNUNET_OS_process_wait (as->system_proc);
+    }
+    GNUNET_OS_process_destroy (as->system_proc);
+    as->system_proc = NULL;
+  }
+  if (NULL != as->pipe_in)
+  {
+    GNUNET_break (GNUNET_OK ==
+                  GNUNET_DISK_pipe_close (as->pipe_in));
+    as->pipe_in = NULL;
+  }
+  if (NULL != as->pipe_out)
+  {
+    GNUNET_break (GNUNET_OK ==
+                  GNUNET_DISK_pipe_close (as->pipe_out));
+    as->pipe_out = NULL;
+  }
+
+  for (unsigned int i = 0; NULL != as->args[i]; i++)
+    GNUNET_free (as->args[i]);
+  GNUNET_free (as->args);
+  GNUNET_free (as);
+}
+
+
+/**
+ * Offer "system" CMD internal data to other commands.
+ *
+ * @param cls closure.
+ * @param[out] ret result.
+ * @param trait name of the trait.
+ * @param index index number of the object to offer.
+ * @return #GNUNET_OK on success
+ */
+static enum GNUNET_GenericReturnValue
+system_traits (void *cls,
+               const void **ret,
+               const char *trait,
+               unsigned int index)
+{
+  struct SystemState *as = cls;
+  struct TALER_TESTING_Trait traits[] = {
+    TALER_TESTING_make_trait_process (&as->system_proc),
+    TALER_TESTING_trait_end ()
+  };
+
+  return TALER_TESTING_get_trait (traits,
+                                  ret,
+                                  trait,
+                                  index);
+}
+
+
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_system_start (
+  const char *label,
+  const char *config_file,
+  ...)
+{
+  struct SystemState *as;
+  va_list ap;
+  const char *arg;
+  unsigned int cnt;
+
+  as = GNUNET_new (struct SystemState);
+  cnt = 4; /* 0-2 reserved, +1 for NULL termination */
+  va_start (ap,
+            config_file);
+  while (NULL != (arg = va_arg (ap,
+                                const char *)))
+  {
+    cnt++;
+  }
+  va_end (ap);
+  as->args = GNUNET_new_array (cnt,
+                               char *);
+  as->args[0] = GNUNET_strdup ("taler-unified-setup");
+  as->args[1] = GNUNET_strdup ("-c");
+  as->args[2] = GNUNET_strdup (config_file);
+  cnt = 3;
+  va_start (ap,
+            config_file);
+  while (NULL != (arg = va_arg (ap,
+                                const char *)))
+  {
+    as->args[cnt++] = GNUNET_strdup (arg);
+  }
+  va_end (ap);
+
+  {
+    struct TALER_TESTING_Command cmd = {
+      .cls = as,
+      .label = label,
+      .run = &system_run,
+      .cleanup = &system_cleanup,
+      .traits = &system_traits
+    };
+
+    return cmd;
+  }
+}
+
+
+/* end of testing_api_cmd_system_start.c */