Examples with IterableLikeCoder org.apache.beam.sdk.coders.IterableLikeCoder used on opensource projects

Example 1 with IterableLikeCoder

use of org.apache.beam.sdk.coders.IterableLikeCoder in project beam by apache.

the class CommonCoderTest method convertValue.

/**
 * Converts from JSON-auto-deserialized types into the proper Java types for the known coders.
 */
private static Object convertValue(Object value, CommonCoder coderSpec, Coder coder) {
    String s = coderSpec.getUrn();
    if (s.equals(getUrn(StandardCoders.Enum.BYTES))) {
        return ((String) value).getBytes(StandardCharsets.ISO_8859_1);
    } else if (s.equals(getUrn(StandardCoders.Enum.BOOL))) {
        return value;
    } else if (s.equals(getUrn(StandardCoders.Enum.STRING_UTF8))) {
        return value;
    } else if (s.equals(getUrn(StandardCoders.Enum.KV))) {
        Coder keyCoder = ((KvCoder) coder).getKeyCoder();
        Coder valueCoder = ((KvCoder) coder).getValueCoder();
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Object k = convertValue(kvMap.get("key"), coderSpec.getComponents().get(0), keyCoder);
        Object v = convertValue(kvMap.get("value"), coderSpec.getComponents().get(1), valueCoder);
        return KV.of(k, v);
    } else if (s.equals(getUrn(StandardCoders.Enum.VARINT))) {
        return ((Number) value).longValue();
    } else if (s.equals(getUrn(StandardCoders.Enum.TIMER))) {
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Coder<?> keyCoder = ((Timer.Coder) coder).getValueCoder();
        Coder<? extends BoundedWindow> windowCoder = ((Timer.Coder) coder).getWindowCoder();
        List<BoundedWindow> windows = new ArrayList<>();
        for (Object window : (List<Object>) kvMap.get("windows")) {
            windows.add((BoundedWindow) convertValue(window, coderSpec.getComponents().get(1), windowCoder));
        }
        if ((boolean) kvMap.get("clearBit")) {
            return Timer.cleared(convertValue(kvMap.get("userKey"), coderSpec.getComponents().get(0), keyCoder), (String) kvMap.get("dynamicTimerTag"), windows);
        }
        Map<String, Object> paneInfoMap = (Map<String, Object>) kvMap.get("pane");
        PaneInfo paneInfo = PaneInfo.createPane((boolean) paneInfoMap.get("is_first"), (boolean) paneInfoMap.get("is_last"), PaneInfo.Timing.valueOf((String) paneInfoMap.get("timing")), (int) paneInfoMap.get("index"), (int) paneInfoMap.get("on_time_index"));
        return Timer.of(convertValue(kvMap.get("userKey"), coderSpec.getComponents().get(0), keyCoder), (String) kvMap.get("dynamicTimerTag"), windows, new Instant(((Number) kvMap.get("fireTimestamp")).longValue()), new Instant(((Number) kvMap.get("holdTimestamp")).longValue()), paneInfo);
    } else if (s.equals(getUrn(StandardCoders.Enum.INTERVAL_WINDOW))) {
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Instant end = new Instant(((Number) kvMap.get("end")).longValue());
        Duration span = Duration.millis(((Number) kvMap.get("span")).longValue());
        return new IntervalWindow(end.minus(span), span);
    } else if (s.equals(getUrn(StandardCoders.Enum.ITERABLE)) || s.equals(getUrn(StandardCoders.Enum.STATE_BACKED_ITERABLE))) {
        Coder elementCoder = ((IterableLikeCoder) coder).getElemCoder();
        List<Object> elements = (List<Object>) value;
        List<Object> convertedElements = new ArrayList<>();
        for (Object element : elements) {
            convertedElements.add(convertValue(element, coderSpec.getComponents().get(0), elementCoder));
        }
        return convertedElements;
    } else if (s.equals(getUrn(StandardCoders.Enum.GLOBAL_WINDOW))) {
        return GlobalWindow.INSTANCE;
    } else if (s.equals(getUrn(StandardCoders.Enum.WINDOWED_VALUE)) || s.equals(getUrn(StandardCoders.Enum.PARAM_WINDOWED_VALUE))) {
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Coder valueCoder = ((WindowedValue.FullWindowedValueCoder) coder).getValueCoder();
        Coder windowCoder = ((WindowedValue.FullWindowedValueCoder) coder).getWindowCoder();
        Object windowValue = convertValue(kvMap.get("value"), coderSpec.getComponents().get(0), valueCoder);
        Instant timestamp = new Instant(((Number) kvMap.get("timestamp")).longValue());
        List<BoundedWindow> windows = new ArrayList<>();
        for (Object window : (List<Object>) kvMap.get("windows")) {
            windows.add((BoundedWindow) convertValue(window, coderSpec.getComponents().get(1), windowCoder));
        }
        Map<String, Object> paneInfoMap = (Map<String, Object>) kvMap.get("pane");
        PaneInfo paneInfo = PaneInfo.createPane((boolean) paneInfoMap.get("is_first"), (boolean) paneInfoMap.get("is_last"), PaneInfo.Timing.valueOf((String) paneInfoMap.get("timing")), (int) paneInfoMap.get("index"), (int) paneInfoMap.get("on_time_index"));
        return WindowedValue.of(windowValue, timestamp, windows, paneInfo);
    } else if (s.equals(getUrn(StandardCoders.Enum.DOUBLE))) {
        return Double.parseDouble((String) value);
    } else if (s.equals(getUrn(StandardCoders.Enum.ROW))) {
        Schema schema;
        try {
            schema = SchemaTranslation.schemaFromProto(SchemaApi.Schema.parseFrom(coderSpec.getPayload()));
        } catch (InvalidProtocolBufferException e) {
            throw new RuntimeException("Failed to parse schema payload for row coder", e);
        }
        return parseField(value, Schema.FieldType.row(schema));
    } else if (s.equals(getUrn(StandardCoders.Enum.SHARDED_KEY))) {
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Coder<?> keyCoder = ((ShardedKey.Coder) coder).getKeyCoder();
        byte[] shardId = ((String) kvMap.get("shardId")).getBytes(StandardCharsets.ISO_8859_1);
        return ShardedKey.of(convertValue(kvMap.get("key"), coderSpec.getComponents().get(0), keyCoder), shardId);
    } else if (s.equals(getUrn(StandardCoders.Enum.CUSTOM_WINDOW))) {
        Map<String, Object> kvMap = (Map<String, Object>) value;
        Coder windowCoder = ((TimestampPrefixingWindowCoder) coder).getWindowCoder();
        return convertValue(kvMap.get("window"), coderSpec.getComponents().get(0), windowCoder);
    } else {
        throw new IllegalStateException("Unknown coder URN: " + coderSpec.getUrn());
    }
}