Download Products with MastMissions

CHANGES.rst

@@ -19,6 +19,19 @@ jplspec
 
 - minor improvement to lookuptable behavior [#3173,#2901]
 
+mast
+^^^^
+
+- Retrieve data products from the Missions-MAST API with ``mast.MastMissions.get_product_list``. Retrieve unique data
+  products only with ``mast.MastMissions.get_unique_product_list``. [#3155]
+
+- Filter data products retrieved from the Missions-MAST API with ``mast.MastMissions.filter_products``. [#3155]
+
+- Download data products from the Missions-MAST API with ``mast.MastMissions.download_products``. 
+  Download a single data product using ``mast.MastMissions.download_file``. [#3155]
+
+- Get the keyword corresponding to the dataset ID for a specific mission with ``mast.MastMissions.get_dataset_kwd``. [#3155]
+
 mocserver
 ^^^^^^^^^
 

astroquery/mast/observations.py

@@ -19,7 +19,7 @@
 import astropy.units as u
 import astropy.coordinates as coord
 
-from astropy.table import Table, Row, unique, vstack
+from astropy.table import Table, Row, vstack
 from astroquery import log
 from astroquery.mast.cloud import CloudAccess
 
@@ -816,7 +816,7 @@
         products = self.filter_products(products, mrp_only=mrp_only, **filters)
 
         # remove duplicate products
-        products = self._remove_duplicate_products(products)
+        products = utils.remove_duplicate_products(products, 'dataURI')
 
         if not len(products):
             warnings.warn("No products to download.", NoResultsWarning)
@@ -928,7 +928,7 @@
             return
 
         # Remove duplicate products
-        data_products = self._remove_duplicate_products(data_products)
+        data_products = utils.remove_duplicate_products(data_products, 'dataURI')
 
         return self._cloud_connection.get_cloud_uri_list(data_products, include_bucket, full_url)
 
@@ -966,30 +966,6 @@
         # Query for product URIs
         return self._cloud_connection.get_cloud_uri(data_product, include_bucket, full_url)
 
-    def _remove_duplicate_products(self, data_products):
-        """
-        Removes duplicate data products that have the same dataURI.
-
-        Parameters
-        ----------
-        data_products : `~astropy.table.Table`
-            Table containing products to be checked for duplicates.
-
-        Returns
-        -------
-        unique_products : `~astropy.table.Table`
-            Table containing products with unique dataURIs.
-
-        """
-        number = len(data_products)
-        unique_products = unique(data_products, keys="dataURI")
-        number_unique = len(unique_products)
-        if number_unique < number:
-            log.info(f"{number - number_unique} of {number} products were duplicates. "
-                     f"Only returning {number_unique} unique product(s).")
-
-        return unique_products
-
     def get_unique_product_list(self, observations):
         """
         Given a "Product Group Id" (column name obsid), returns a list of associated data products with
@@ -1009,7 +985,7 @@
             Table containing products with unique dataURIs.
         """
         products = self.get_product_list(observations)
-        unique_products = self._remove_duplicate_products(products)
+        unique_products = utils.remove_duplicate_products(products, 'dataURI')
         if len(unique_products) < len(products):
             log.info("To return all products, use `Observations.get_product_list`")
         return unique_products

astroquery/mast/services.py

@@ -14,6 +14,7 @@
 from astropy.table import Table, MaskedColumn
 from astropy.utils.decorators import deprecated_renamed_argument
 
+from .. import log
 from ..query import BaseQuery
 from ..utils import async_to_sync
 from ..utils.class_or_instance import class_or_instance
@@ -84,7 +85,12 @@
             col_data = np.array([x[idx] for x in json_obj[data_key]], dtype=object)
         except KeyError:
             # it's not a data array, fall back to using column name as it is array of dictionaries
-            col_data = np.array([x[col_name] for x in json_obj[data_key]], dtype=object)
+            try:
+                col_data = np.array([x[col_name] for x in json_obj[data_key]], dtype=object)
+            except KeyError:
+                # Skip column names not found in data
+                log.debug('Column %s was not found in data. Skipping...', col_name)
+                continue
         if ignore_value is not None:
             col_data[np.where(np.equal(col_data, None))] = ignore_value
 
@@ -112,6 +118,8 @@
 
     SERVICE_URL = conf.server
     REQUEST_URL = conf.server + "/api/v0.1/"
+    MISSIONS_DOWNLOAD_URL = conf.server + "/search/"
+    MAST_DOWNLOAD_URL = conf.server + "/api/v0.1/Download/file"
     SERVICES = {}
 
     def __init__(self, session=None):
@@ -270,27 +278,28 @@
 
         request_url = self.REQUEST_URL + service_url.format(**compiled_service_args)
 
+        # Default headers
         headers = {
             'User-Agent': self._session.headers['User-Agent'],
             'Content-Type': 'application/x-www-form-urlencoded',
             'Accept': 'application/json'
         }
+
         # Params as a list of tuples to allow for multiple parameters added
         catalogs_request = []
-        if not page:
-            page = params.pop('page', None)
-        if not pagesize:
-            pagesize = params.pop('pagesize', None)
+        page = page or params.pop('page', None)
+        pagesize = pagesize or params.pop('pagesize', None)
 
+        # Add pagination if specified
         if page is not None:
             catalogs_request.append(('page', page))
         if pagesize is not None:
             catalogs_request.append(('pagesize', pagesize))
 
+        # Populate parameters based on `use_json`
         if not use_json:
-            # Decompose filters, sort
-            for prop, value in kwargs.items():
-                params[prop] = value
+            # When not using JSON, merge kwargs into params and build query
+            params.update(kwargs)
             catalogs_request.extend(self._build_catalogs_params(params))
         else:
             headers['Content-Type'] = 'application/json'
@@ -307,9 +316,10 @@
                 catalogs_request = params_dict
 
                 # Removing single-element lists. Single values will live on their own (except for `sort_by`)
-                for key in catalogs_request.keys():
-                    if (key != 'sort_by') & (len(catalogs_request[key]) == 1):
-                        catalogs_request[key] = catalogs_request[key][0]
+                catalogs_request = {
+                    k: v if k == 'sort_by' or len(v) > 1 else v[0]
+                    for k, v in params_dict.items()
+                }
 
             # Otherwise, catalogs_request can remain as the original params dict
             else:
@@ -318,6 +328,40 @@
         response = self._request('POST', request_url, data=catalogs_request, headers=headers, use_json=use_json)
         return response
 
+    @class_or_instance
+    def missions_request_async(self, service, params):
+        """
+        Builds and executes an asynchronous query to the MAST Search API.
+        Parameters
+        ----------
+        service : str
+           The MAST Search API service to query. Should be present in self.SERVICES.
+        params : dict
+           JSON object containing service parameters.
+        Returns
+        -------
+        response : list of `~requests.Response`
+        """
+        service_config = self.SERVICES.get(service.lower())
+        request_url = self.REQUEST_URL + service_config.get('path')
+
+        # Default headers
+        headers = {
+            'User-Agent': self._session.headers['User-Agent'],
+            'Content-Type': 'application/json',
+            'Accept': 'application/json'
+        }
+
+        # make request
+        data, params = (params, None)
+        response = self._request(method='POST',
+                                 url=request_url,
+                                 params=params,
+                                 data=data,
+                                 headers=headers,
+                                 use_json=True)
+        return response
+
     def _build_catalogs_params(self, params):
         """
         Gathers parameters for Catalogs.MAST usage and translates to valid API syntax tuples
@@ -387,12 +431,6 @@
         response : boolean
             Whether the passed dict has at least one criteria parameter
         """
-        criteria_check = False
-        non_criteria_params = ["columns", "sort_by", "page_size", "pagesize", "page"]
-        criteria_keys = criteria.keys()
-        for key in criteria_keys:
-            if key not in non_criteria_params:
-                criteria_check = True
-                break
 
-        return criteria_check
+        non_criteria_params = ["columns", "sort_by", "page_size", "pagesize", "page"]
+        return any(key not in non_criteria_params for key in criteria)

astroquery/mast/tests/data/README.rst

@@ -25,3 +25,14 @@ To generate `~astroquery.mast.tests.data.panstarrs_columns.json`, use the follow
     >>> resp = utils._simple_request('https://catalogs.mast.stsci.edu/api/v0.1/panstarrs/dr2/mean/metadata.json')
     >>> with open('panstarrs_columns.json', 'w') as file:
     ...     json.dump(resp.json(), file, indent=4)  # doctest: +SKIP
+
+To generate `~astroquery.mast.tests.data.mission_products.json`, use the following:
+
+.. doctest-remote-data::
+
+    >>> import json
+    >>> from astroquery.mast import utils
+    ...
+    >>> resp = utils._simple_request('https://mast.stsci.edu/search/hst/api/v0.1/list_products', {'dataset_ids': 'Z14Z0104T'})
+    >>> with open('panstarrs_columns.json', 'w') as file:
+    ...     json.dump(resp.json(), file, indent=4)  # doctest: +SKIP

astroquery/mast/tests/data/mission_products.json

@@ -0,0 +1,79 @@
+{
+    "products": [
+        {
+            "product_key": "Z14Z0104T_z14z0104t_shf.fits",
+            "access": "PUBLIC",
+            "dataset": "Z14Z0104T",
+            "instrument_name": "HRS   ",
+            "filters": "MIRROR-N2",
+            "filename": "z14z0104t_shf.fits",
+            "uri": "Z14Z0104T/z14z0104t_shf.fits",
+            "authz_primary_identifier": "Z14Z0104T",
+            "authz_secondary_identifier": "CAL",
+            "file_suffix": "SHF",
+            "category": "UNCALIBRATED",
+            "size": 31680,
+            "type": "science"
+        },
+        {
+            "product_key": "Z14Z0104T_z14z0104t_trl.fits",
+            "access": "PUBLIC",
+            "dataset": "Z14Z0104T",
+            "instrument_name": "HRS   ",
+            "filters": "MIRROR-N2",
+            "filename": "z14z0104t_trl.fits",
+            "uri": "Z14Z0104T/z14z0104t_trl.fits",
+            "authz_primary_identifier": "Z14Z0104T",
+            "authz_secondary_identifier": "CAL",
+            "file_suffix": "TRL",
+            "category": "AUX",
+            "size": 17280,
+            "type": "science"
+        },
+        {
+            "product_key": "Z14Z0104T_z14z0104t_ulf.fits",
+            "access": "PUBLIC",
+            "dataset": "Z14Z0104T",
+            "instrument_name": "HRS   ",
+            "filters": "MIRROR-N2",
+            "filename": "z14z0104t_ulf.fits",
+            "uri": "Z14Z0104T/z14z0104t_ulf.fits",
+            "authz_primary_identifier": "Z14Z0104T",
+            "authz_secondary_identifier": "CAL",
+            "file_suffix": "ULF",
+            "category": "UNCALIBRATED",
+            "size": 14400,
+            "type": "science"
+        },
+        {
+            "product_key": "Z14Z0104T_z14z0104t_pdq.fits",
+            "access": "PUBLIC",
+            "dataset": "Z14Z0104T",
+            "instrument_name": "HRS   ",
+            "filters": "MIRROR-N2",
+            "filename": "z14z0104t_pdq.fits",
+            "uri": "Z14Z0104T/z14z0104t_pdq.fits",
+            "authz_primary_identifier": "Z14Z0104T",
+            "authz_secondary_identifier": "PDQ",
+            "file_suffix": "PDQ",
+            "category": "AUX",
+            "size": 11520,
+            "type": "science"
+        },
+        {
+            "product_key": "Z14Z0104T_z14z0104x_ocx.fits",
+            "access": "PUBLIC",
+            "dataset": "Z14Z0104T",
+            "instrument_name": "HRS   ",
+            "filters": "MIRROR-N2",
+            "filename": "z14z0104x_ocx.fits",
+            "uri": "Z14Z0104T/z14z0104x_ocx.fits",
+            "authz_primary_identifier": "Z14Z0104X",
+            "authz_secondary_identifier": "OCX",
+            "file_suffix": "OCX",
+            "category": "OTHER",
+            "size": 11520,
+            "type": "science"
+        }
+    ]
+}