initial end-to-end tests for streaming, reporting, generating

Author: zenmoto

splunklib/searchcommands/search_command.py

@@ -851,7 +851,8 @@ def _execute(self, ifile, process):
 
     @staticmethod
     def _as_binary_stream(ifile):
-        if six.PY2:
+        naught = ifile.read(0)
+        if isinstance(naught, bytes):
             return ifile
 
         try:

tests/searchcommands/chunked_data_stream.py

@@ -0,0 +1,93 @@
+import collections
+import csv
+import io
+import json
+
+import splunklib.searchcommands.internals
+from splunklib import six
+
+
+class Chunk(object):
+    def __init__(self, version, meta, data):
+        self.version = six.ensure_str(version)
+        self.meta = json.loads(meta)
+        self.data = csv.DictReader(io.StringIO(data.decode("utf-8")), dialect=splunklib.searchcommands.internals.CsvDialect)
+
+
+class ChunkedDataStreamIter(collections.Iterator):
+    def __init__(self, chunk_stream):
+        self.chunk_stream = chunk_stream
+
+    def __next__(self):
+        return self.next()
+
+    def next(self):
+        try:
+            return self.chunk_stream.read_chunk()
+        except EOFError:
+            raise StopIteration
+
+
+class ChunkedDataStream(collections.Iterable):
+    def __iter__(self):
+        return ChunkedDataStreamIter(self)
+
+    def __init__(self, stream):
+        empty = stream.read(0)
+        assert isinstance(empty, bytes)
+        self.stream = stream
+
+    def read_chunk(self):
+        header = self.stream.readline()
+        if len(header) == 0:
+            raise EOFError
+
+        while len(header) > 0 and header.strip() == b'':
+            header = self.stream.readline()  # Skip empty lines
+        version, meta, data = header.rstrip().split(b',')
+        metabytes = self.stream.read(int(meta))
+        databytes = self.stream.read(int(data))
+        print("sent")
+        return Chunk(version, metabytes, databytes)
+
+
+def build_chunk(kv, data=None):
+    metadata = six.ensure_binary(json.dumps(kv), 'utf-8')
+    data_output = _build_data_csv(data)
+    return b"chunked 1.0,%d,%d\n%s%s" % (len(metadata), len(data_output), metadata, data_output)
+
+
+def build_empty_searchinfo():
+    return {
+        'earliest_time': 0,
+        'latest_time': 0,
+        'search': "",
+        'dispatch_dir': "",
+        'sid': "",
+        'args': [],
+        'splunk_version': "42.3.4",
+    }
+
+
+def build_getinfo_chunk():
+    return build_chunk({'action': 'getinfo', 'preview': False, 'searchinfo': build_empty_searchinfo()})
+
+
+def build_data_chunk(data, finished=True):
+    return build_chunk({'action': 'execute', 'finished': finished}, data)
+
+
+def _build_data_csv(data):
+    if data is None:
+        return b''
+    if isinstance(data, bytes):
+        return data
+    csvout = io.StringIO()
+    headers = set()
+    for datum in data:
+        headers.update(datum.keys())
+    writer = csv.DictWriter(csvout, headers, dialect=splunklib.searchcommands.internals.CsvDialect)
+    writer.writeheader()
+    for datum in data:
+        writer.writerow(datum)
+    return csvout.getvalue().encode("utf-8")

tests/searchcommands/test_generator_command.py

@@ -0,0 +1,41 @@
+import io
+import time
+
+from . import chunked_data_stream as chunky
+
+from splunklib.searchcommands import Configuration, GeneratingCommand
+
+
+def test_simple_generator():
+    @Configuration()
+    class GeneratorTest(GeneratingCommand):
+        def generate(self):
+            for num in range(1, 10):
+                yield {'_time': time.time(), 'event_index': num}
+    generator = GeneratorTest()
+    in_stream = io.BytesIO()
+    in_stream.write(chunky.build_getinfo_chunk())
+    in_stream.write(chunky.build_chunk({'action': 'execute'}))
+    in_stream.seek(0)
+    out_stream = io.BytesIO()
+    generator._process_protocol_v2([], in_stream, out_stream)
+    out_stream.seek(0)
+
+    ds = chunky.ChunkedDataStream(out_stream)
+    is_first_chunk = True
+    finished_seen = False
+    expected = set(map(lambda i: str(i), range(1, 10)))
+    seen = set()
+    for chunk in ds:
+        if is_first_chunk:
+            assert chunk.meta["generating"] is True
+            assert chunk.meta["type"] == "stateful"
+            is_first_chunk = False
+        finished_seen = chunk.meta.get("finished", False)
+        for row in chunk.data:
+            seen.add(row["event_index"])
+    assert expected.issubset(seen)
+    assert finished_seen
+
+
+

tests/searchcommands/test_reporting_command.py

@@ -0,0 +1,34 @@
+import io
+
+import splunklib.searchcommands as searchcommands
+from . import chunked_data_stream as chunky
+
+
+def test_simple_reporting_command():
+    @searchcommands.Configuration()
+    class TestReportingCommand(searchcommands.ReportingCommand):
+        def reduce(self, records):
+            value = 0
+            for record in records:
+                value += int(record["value"])
+            yield {'sum': value}
+
+    cmd = TestReportingCommand()
+    ifile = io.BytesIO()
+    data = list()
+    for i in range(0, 10):
+        data.append({"value": str(i)})
+    ifile.write(chunky.build_getinfo_chunk())
+    ifile.write(chunky.build_data_chunk(data))
+    ifile.seek(0)
+    ofile = io.BytesIO()
+    cmd._process_protocol_v2([], ifile, ofile)
+    ofile.seek(0)
+    chunk_stream = chunky.ChunkedDataStream(ofile)
+    getinfo_response = chunk_stream.read_chunk()
+    assert getinfo_response.meta['type'] == 'reporting'
+    data_chunk = chunk_stream.read_chunk()
+    assert data_chunk.meta['finished'] is True  # Should only be one row
+    data = list(data_chunk.data)
+    assert len(data) == 1
+    assert int(data[0]['sum']) == sum(range(0, 10))

tests/searchcommands/test_streaming_command.py

@@ -0,0 +1,29 @@
+import io
+
+from . import chunked_data_stream as chunky
+from splunklib.searchcommands import StreamingCommand, Configuration
+
+
+def test_simple_streaming_command():
+    @Configuration()
+    class TestStreamingCommand(StreamingCommand):
+
+        def stream(self, records):
+            for record in records:
+                record["out_index"] = record["in_index"]
+                yield record
+
+    cmd = TestStreamingCommand()
+    ifile = io.BytesIO()
+    ifile.write(chunky.build_getinfo_chunk())
+    data = list()
+    for i in range(0, 10):
+        data.append({"in_index": str(i)})
+    ifile.write(chunky.build_data_chunk(data, finished=True))
+    ifile.seek(0)
+    ofile = io.BytesIO()
+    cmd._process_protocol_v2([], ifile, ofile)
+    ofile.seek(0)
+    output = chunky.ChunkedDataStream(ofile)
+    getinfo_response = output.read_chunk()
+    assert getinfo_response.meta["type"] == "streaming"