Restructure log location

Resolves #7 (closed)

mpsd-software-environment.py

@@ -12,6 +12,7 @@ import time
 from pathlib import Path
 from typing import List, Tuple, Union
 import re
+from string import Template
 
 # If 'rich' is available ("pip install rich" or "apt-get install python3-rich"),
 # then use coloured output, otherwise proceed as before
@@ -31,19 +32,78 @@ for given system architecture and MPSD software stack version.\n
 The toolchains
 are built using the bash script spack_setup.sh, and the results are logged. """
 
+call_date_iso = datetime.datetime.now().replace(microsecond=0).isoformat()
 config_vars = {
+    #  kept inside the mpsd_release folder
     "cmd_log_file": "install.log",
-    "build_log_file": (
-        "logs/mpsd_spack_ver_toolchains_"
-        f"{datetime.datetime.now().replace(microsecond=0).isoformat()}.log"
+    #  Placeholder installer log file name, placed at mpsd_microarch/logs
+    "installer_log_template": Template(
+        "${mpsd_release}_${mpsd_microarch}_${date}_${action}.log"
+    ),
+    #  Placeholder build log file name, placed at mpsd_microarch/logs
+    "build_log_template": Template(
+        "${mpsd_release}_${mpsd_microarch}_${date}_${toolchain}_${action}.log"
     ),
     "metadata_tag_open": "!<meta>",
     "metadata_tag_close": "</meta>!",
-    # TODO: modify toolchains,mpsd_spack_ver when the variable is available
     "spack_environments_repo": "https://gitlab.gwdg.de/mpsd-cs/spack-environments.git",
 }
 
 
+def create_log_file_names(
+    mpsd_release: str,
+    mpsd_microarch: str,
+    action: str,
+    date: str = call_date_iso,
+    toolchain: str = None,
+) -> Tuple[str, str]:
+    """Create log file names.
+
+    This function creates the log file names for the installer and
+    the build log files.
+    The installer log file is created
+    from the output of this script except
+    the toolchain build log that is handled by the spack_setup.sh script.
+    The build log `tee`'s the output of the spack_setup.sh script to the log file.
+    The log file names are created using the
+    template strings defined in config_vars.
+
+    Parameters
+    ----------
+    mpsd_release : str
+        MPSD software stack version
+    mpsd_microarch : str
+        system architecture
+    date : str
+        date of the call ins iso format
+    action : str
+        action performed (install,remove,reinstall,prepare,status)
+        only install and remove are valid for build log file.
+    toolchain : str
+        toolchain name (only for build log file)
+    returns : tuple
+        tuple containing the strings of installer and build log file names
+    """
+    installer_log_file = config_vars["installer_log_template"].substitute(
+        mpsd_release=mpsd_release,
+        mpsd_microarch=mpsd_microarch,
+        date=date,
+        action=action,
+    )
+    if toolchain and action in ["install", "remove"]:
+        build_log_file = config_vars["build_log_template"].substitute(
+            mpsd_release=mpsd_release,
+            mpsd_microarch=mpsd_microarch,
+            date=date,
+            action=action,
+            toolchain=toolchain,
+        )
+    else:
+        build_log_file = None
+        logging.warning("Incorrect action or toolchain name.")
+    return installer_log_file, build_log_file
+
+
 def log_metadata(key: str, value: str) -> None:
     """Log metadata to the log file.
 
@@ -516,8 +576,7 @@ def install_environment(
 
     # Set required variables
     release_base_dir = script_dir / mpsd_release
-    os.environ.get("MPSD_OS", "UNKNOWN_OS")
-    mpsd_microarch = os.environ.get("MPSD_MICROARCH", "UNKNOWN_MICROARCH")
+
     toolchain_dir = release_base_dir / mpsd_microarch
     toolchain_dir.mkdir(parents=True, exist_ok=True)
     spack_setup_script = release_base_dir / "spack-environments" / "spack_setup.sh"
@@ -557,11 +616,7 @@ def install_environment(
             # _mpsd_spack_ver_ with mpsd_release
 
             logging.info(f"Installing toolchain {toolchain} to {toolchain_dir}")
-            install_log_file = (
-                config_vars["build_log_file"]
-                .replace("mpsd_spack_ver_", f"{mpsd_release}_")
-                .replace("_toolchains_", f"_{toolchain}_")
-            )
+
             # log the command
             setup_log_cmd(
                 mpsd_release,
@@ -679,7 +734,16 @@ def main():
     # Carry out the action
     args = parser.parse_args()
 
+    # Get machine configs
+    os.environ.get("MPSD_OS", "UNKNOWN_OS")
+    os.environ.get("MPSD_MICROARCH", "UNKNOWN_MICROARCH")
     # parse logging first
+    # decide the log_file_name
+    (
+        config_vars["build_log_file"]
+        .replace("mpsd_spack_ver_", f"{mpsd_release}_")
+        .replace("_toolchains_", f"_{toolchain}_")
+    )
     set_up_logging(args.loglevel)
 
     # target dir is the place where this script exists. the