Echo runconfig to separate file instead of mixing with log messages.

python/packages/nisar/workflows/defaults/focus.py

@@ -52,6 +52,8 @@
             # SAS writes output product to the following file. PGE may rename.
             # NOTE: R2 needs to handle mixed-mode case with multiple outputs.
             SASOutputFile: ./slc.h5
+            # Echo processor config (including defaults) to file.
+            SASConfigFile: null
 
         PrimaryExecutable:
             # Handy to set to "SLC" until other ISCE tools updated.

python/packages/nisar/workflows/focus.py

@@ -45,15 +45,29 @@ def deep_update(d, u):
 
 
 def load_config(yaml):
+    "Load default runconfig, override with user input, and convert to Struct"
     parser = YAML()
     cfg = parser.load(defaults.focus.runconfig)
     with open(yaml) as f:
         user = parser.load(f)
     deep_update(cfg, user)
-    log.info(json.dumps(cfg, indent=2, default=str))
     return Struct(cfg)
 
 
+def dump_config(cfg: Struct, filename):
+    def struct2dict(s: Struct):
+        d = s.__dict__.copy()
+        for k in d:
+            if isinstance(d[k], Struct):
+                d[k] = struct2dict(d[k])
+        return d
+    parser = YAML()
+    parser.indent = 4
+    with open(filename, 'w') as f:
+        d = struct2dict(cfg)
+        parser.dump(d, f)
+
+
 def validate_config(x):
     # TODO
     log.warning("Skipping input validation.")
@@ -445,6 +459,10 @@ def main(argv):
     args = parser.parse_args(argv)
     configure_logging()
     cfg = validate_config(load_config(args.config))
+    echofile = cfg.runconfig.groups.ProductPathGroup.SASConfigFile
+    if echofile:
+        log.info(f"Logging configuration to file {echofile}.")
+        dump_config(cfg, echofile)
     focus(cfg)
 
 

share/nisar/examples/slc_workflow.yaml

@@ -49,6 +49,8 @@ runconfig:
             # SAS writes output product to the following file. PGE may rename.
             # NOTE: R2 needs to handle mixed-mode case with multiple outputs.
             SASOutputFile: ./slc.h5
+            # Echo processor config (including defaults) to file.
+            SASConfigFile: ./rslc_config.yaml
 
         PrimaryExecutable:
             ProductType: RSLC

tests/data/REE_L0B_out17.yaml

@@ -9,7 +9,8 @@ runconfig:
             ScratchPath: .
             # SAS writes output product to the following file. PGE may rename.
             # NOTE: R2 needs to handle mixed-mode case with multiple outputs.
-            SASOutputFile: ./slc.h5
+            SASOutputFile: ./rslc.h5
+            SASConfigFile: ./rslc_config.yaml
 
         PrimaryExecutable:
             ProductType: SLC