Add redis+distributed graphsage

examples/distribute_graphsage/README.md

@@ -6,54 +6,32 @@ information (e.g., text attributes) to efficiently generate node embeddings for
 For purpose of high scalability, we use redis as distribute graph storage solution and training graphsage against redis server.
 
 ### Datasets(Quickstart)
-The reddit dataset should be downloaded from [reddit_adj.npz](https://drive.google.com/open?id=174vb0Ws7Vxk_QTUtxqTgDHSQ4El4qDHt) and [reddit.npz](https://drive.google.com/open?id=19SphVl_Oe8SJ1r87Hr5a6znx3nJu1F2Jthe). The details for Reddit Dataset can be found [here](https://cs.stanford.edu/people/jure/pubs/graphsage-nips17.pdf).
+The reddit dataset should be downloaded from [reddit_adj.npz](https://drive.google.com/open?id=174vb0Ws7Vxk_QTUtxqTgDHSQ4El4qDHt) and [reddit.npz](https://drive.google.com/open?id=19SphVl_Oe8SJ1r87Hr5a6znx3nJu1F2J). The details for Reddit Dataset can be found [here](https://cs.stanford.edu/people/jure/pubs/graphsage-nips17.pdf).
 
-Alternatively, reddit dataset has been preprocessed and packed into docker image, which can be instantly pulled using following commands.
+- reddit.npz: https://drive.google.com/open?id=19SphVl_Oe8SJ1r87Hr5a6znx3nJu1F2J
+- reddit_adj.npz: https://drive.google.com/open?id=174vb0Ws7Vxk_QTUtxqTgDHSQ4El4qDHt
 
-```sh
-docker pull githubutilities/reddit_redis_demo:v0.1
-```
+Download `reddit.npz` and `reddit_adj.npz` into `data` directory for further preprocessing.
 
 ### Dependencies
 
-```txt
-- paddlepaddle>=1.6
-- pgl
-- scipy
-- redis==2.10.6
-- redis-py-cluster==1.3.6
+```sh
+pip install -r requirements.txt
 ```
 
 ### How to run
 
-#### 1. Start reddit data service
+#### 1. Preprocessing and start reddit data service
 
 ```sh
-docker run \
-    --net=host \
-    -d --rm \
-    --name reddit_demo \
-    -it githubutilities/reddit_redis_demo:v0.1 \
-    /bin/bash -c "/bin/bash ./before_hook.sh && /bin/bash"
-docker logs -f `docker ps -aqf "name=reddit_demo"`
+pushd ./redis_setup
+    /bin/bash ./before_hook.sh
+popd
 ```
 
 #### 2. training GraphSAGE model
 
 ```sh
-python train.py --use_cuda --epoch 10 --graphsage_type graphsage_mean --sample_workers 10
+sh ./cloud_run.sh
 ```
 
-#### Hyperparameters
-
-- epoch: Number of epochs default (10)
-- use_cuda: Use gpu if assign use_cuda. 
-- graphsage_type: We support 4 aggregator types including "graphsage_mean", "graphsage_maxpool", "graphsage_meanpool" and "graphsage_lstm".
-- sample_workers: The number of workers for multiprocessing subgraph sample.
-- lr: Learning rate.
-- batch_size: Batch size.
-- samples_1: The max neighbors for the first hop neighbor sampling. (default: 25)
-- samples_2: The max neighbors for the second hop neighbor sampling. (default: 10)
-- hidden_size: The hidden size of the GraphSAGE models.
-
-

examples/distribute_graphsage/cloud_run.sh

+#!/bin/bash 
+set -x
+mode=${1}
+
+source ./utils.sh
+unset http_proxy https_proxy
+
+source ./local_config
+if [ ! -d ${log_dir} ]; then
+    mkdir ${log_dir}
+fi 
+
+for((i=0;i<${PADDLE_PSERVERS_NUM};i++))
+do
+    echo "start ps server: ${i}"
+    echo $log_dir
+    TRAINING_ROLE="PSERVER" PADDLE_TRAINER_ID=${i} sh job.sh &> $log_dir/pserver.$i.log & 
+done
+sleep 10s 
+for((j=0;j<${PADDLE_TRAINERS_NUM};j++))
+do
+    echo "start ps work: ${j}"
+    TRAINING_ROLE="TRAINER" PADDLE_TRAINER_ID=${j} sh job.sh &> $log_dir/worker.$j.log &
+done
+tail -f $log_dir/worker.0.log

examples/distribute_graphsage/cluster_train.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import argparse
+import time
+import os
+import math
+import numpy as np
+
+import paddle.fluid as F
+import paddle.fluid.layers as L
+from paddle.fluid.incubate.fleet.parameter_server.distribute_transpiler import fleet
+from paddle.fluid.transpiler.distribute_transpiler import DistributeTranspilerConfig
+import paddle.fluid.incubate.fleet.base.role_maker as role_maker
+from pgl.utils.logger import log
+
+from model import GraphsageModel
+from utils import load_config
+import reader
+
+
+def init_role():
+    # reset the place according to role of parameter server
+    training_role = os.getenv("TRAINING_ROLE", "TRAINER")
+    paddle_role = role_maker.Role.WORKER
+    place = F.CPUPlace()
+    if training_role == "PSERVER":
+        paddle_role = role_maker.Role.SERVER
+
+    # set the fleet runtime environment according to configure
+    ports = os.getenv("PADDLE_PORT", "6174").split(",")
+    pserver_ips = os.getenv("PADDLE_PSERVERS").split(",")  # ip,ip...
+    eplist = []
+    if len(ports) > 1:
+        # local debug mode, multi port
+        for port in ports:
+            eplist.append(':'.join([pserver_ips[0], port]))
+    else:
+        # distributed mode, multi ip
+        for ip in pserver_ips:
+            eplist.append(':'.join([ip, ports[0]]))
+
+    pserver_endpoints = eplist  # ip:port,ip:port...
+    worker_num = int(os.getenv("PADDLE_TRAINERS_NUM", "0"))
+    trainer_id = int(os.getenv("PADDLE_TRAINER_ID", "0"))
+    role = role_maker.UserDefinedRoleMaker(
+        current_id=trainer_id,
+        role=paddle_role,
+        worker_num=worker_num,
+        server_endpoints=pserver_endpoints)
+    fleet.init(role)
+
+
+def optimization(base_lr, loss, optimizer='adam'):
+    if optimizer == 'sgd':
+        optimizer = F.optimizer.SGD(base_lr)
+    elif optimizer == 'adam':
+        optimizer = F.optimizer.Adam(base_lr, lazy_mode=True)
+    else:
+        raise ValueError
+
+    log.info('learning rate:%f' % (base_lr))
+    #create the DistributeTranspiler configure
+    config = DistributeTranspilerConfig()
+    config.sync_mode = False
+    #config.runtime_split_send_recv = False
+
+    config.slice_var_up = False
+    #create the distributed optimizer
+    optimizer = fleet.distributed_optimizer(optimizer, config)
+    optimizer.minimize(loss)
+
+
+def build_complied_prog(train_program, model_loss):
+    num_threads = int(os.getenv("CPU_NUM", 10))
+    trainer_id = int(os.getenv("PADDLE_TRAINER_ID", 0))
+    exec_strategy = F.ExecutionStrategy()
+    exec_strategy.num_threads = num_threads
+    #exec_strategy.use_experimental_executor = True
+    build_strategy = F.BuildStrategy()
+    build_strategy.enable_inplace = True
+    #build_strategy.memory_optimize = True
+    build_strategy.memory_optimize = False
+    build_strategy.remove_unnecessary_lock = False
+    if num_threads > 1:
+        build_strategy.reduce_strategy = F.BuildStrategy.ReduceStrategy.Reduce
+
+    compiled_prog = F.compiler.CompiledProgram(
+        train_program).with_data_parallel(loss_name=model_loss.name)
+    return compiled_prog
+
+
+def fake_py_reader(data_iter, num):
+    def fake_iter():
+        queue = []
+        for idx, data in enumerate(data_iter()):
+            queue.append(data)
+            if len(queue) == num:
+                yield queue
+                queue = []
+        if len(queue) > 0:
+            while len(queue) < num:
+                queue.append(queue[-1])
+            yield queue
+    return fake_iter
+
+def train_prog(exe, program, model, pyreader, args):
+    trainer_id = int(os.getenv("PADDLE_TRAINER_ID", "0"))
+    start = time.time()
+    batch = 0
+    total_loss = 0.
+    total_acc = 0.
+    total_sample = 0
+    for epoch_idx in range(args.num_epoch):
+        for step, batch_feed_dict in enumerate(pyreader()):
+            try:
+                cpu_time = time.time()
+                batch += 1
+                batch_loss, batch_acc  = exe.run(
+                    program,
+                    feed=batch_feed_dict,
+                    fetch_list=[model.loss, model.acc])
+
+                end = time.time()
+                if batch % args.log_per_step == 0:
+                    log.info(
+                        "Batch %s Loss %s Acc %s \t Speed(per batch) %.5lf/%.5lf sec"
+                        % (batch, np.mean(batch_loss), np.mean(batch_acc), (end - start) /batch, (end - cpu_time)))
+
+                if step % args.steps_per_save == 0:
+                    save_path = args.save_path
+                    if trainer_id == 0:
+                        model_path = os.path.join(save_path, "%s" % step)
+                        fleet.save_persistables(exe, model_path)
+            except Exception as e:
+                log.info("Pyreader train error")
+                log.exception(e)
+
+def main(args):
+    log.info("start")
+
+    worker_num = int(os.getenv("PADDLE_TRAINERS_NUM", "0"))
+    num_devices = int(os.getenv("CPU_NUM", 10))
+
+    model = GraphsageModel(args)
+    loss = model.forward()
+    train_iter = reader.get_iter(args, model.graph_wrapper, 'train')
+    pyreader = fake_py_reader(train_iter, num_devices)
+
+    # init fleet
+    init_role()
+
+    optimization(args.lr, loss, args.optimizer)
+
+    # init and run server or worker
+    if fleet.is_server():
+        fleet.init_server(args.warm_start_from_dir)
+        fleet.run_server()
+
+    if fleet.is_worker():
+        log.info("start init worker done")
+        fleet.init_worker()
+        #just the worker, load the sample
+        log.info("init worker done")
+
+        exe = F.Executor(F.CPUPlace())
+        exe.run(fleet.startup_program)
+        log.info("Startup done")
+
+        compiled_prog = build_complied_prog(fleet.main_program, loss)
+        train_prog(exe, compiled_prog, model, pyreader, args)
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='metapath2vec')
+    parser.add_argument("-c", "--config", type=str, default="./config.yaml")
+    args = parser.parse_args()
+    config = load_config(args.config)
+    log.info(config)
+    main(config)
+

examples/distribute_graphsage/config.yaml

+# model config
+hidden_size: 128
+num_class: 41
+samples: [25, 10]
+graphsage_type: "graphsage_mean"
+
+# trainging config
+num_epoch: 10
+batch_size: 128
+num_sample_workers: 10
+optimizer: "adam"
+lr: 0.01
+warm_start_from_dir: null
+steps_per_save: 1000
+log_per_step: 1
+save_path: "./checkpoints"
+log_dir: "./logs"
+CPU_NUM: 1
+

examples/distribute_graphsage/job.sh

+#!/bin/bash
+
+set -x
+source ./utils.sh
+
+export CPU_NUM=$CPU_NUM
+export FLAGS_rpc_deadline=3000000 
+
+export FLAGS_communicator_send_queue_size=1
+export FLAGS_communicator_min_send_grad_num_before_recv=0
+export FLAGS_communicator_max_merge_var_num=1
+export FLAGS_communicator_merge_sparse_grad=0
+
+python -u cluster_train.py -c config.yaml

examples/distribute_graphsage/local_config

+#!/bin/bash 
+export PADDLE_TRAINERS_NUM=2
+export PADDLE_PSERVERS_NUM=2
+export PADDLE_PORT=6184,6185
+export PADDLE_PSERVERS="127.0.0.1"
+

examples/distribute_graphsage/model.py

@@ -11,10 +11,22 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+"""
+    graphsage model.
+"""
+from __future__ import division
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+import math
+
+import pgl
+import numpy as np
 import paddle
+import paddle.fluid.layers as L
+import paddle.fluid as F
 import paddle.fluid as fluid
 
-
 def copy_send(src_feat, dst_feat, edge_feat):
     return src_feat["h"]
 
@@ -128,3 +140,87 @@ def graphsage_lstm(gw, feature, hidden_size, act, name):
     output = fluid.layers.concat([self_feature, neigh_feature], axis=1)
     output = fluid.layers.l2_normalize(output, axis=1)
     return output
+
+
+def build_graph_model(graph_wrapper, num_class, k_hop, graphsage_type,
+                      hidden_size):
+    node_index = fluid.layers.data(
+        "node_index", shape=[None], dtype="int64", append_batch_size=False)
+
+    node_label = fluid.layers.data(
+        "node_label", shape=[None, 1], dtype="int64", append_batch_size=False)
+
+    #feature = fluid.layers.gather(feature, graph_wrapper.node_feat['feats'])
+    feature = graph_wrapper.node_feat['feats']
+    feature.stop_gradient = True
+
+    for i in range(k_hop):
+        if graphsage_type == 'graphsage_mean':
+            feature = graphsage_mean(
+                graph_wrapper,
+                feature,
+                hidden_size,
+                act="relu",
+                name="graphsage_mean_%s" % i)
+        elif graphsage_type == 'graphsage_meanpool':
+            feature = graphsage_meanpool(
+                graph_wrapper,
+                feature,
+                hidden_size,
+                act="relu",
+                name="graphsage_meanpool_%s" % i)
+        elif graphsage_type == 'graphsage_maxpool':
+            feature = graphsage_maxpool(
+                graph_wrapper,
+                feature,
+                hidden_size,
+                act="relu",
+                name="graphsage_maxpool_%s" % i)
+        elif graphsage_type == 'graphsage_lstm':
+            feature = graphsage_lstm(
+                graph_wrapper,
+                feature,
+                hidden_size,
+                act="relu",
+                name="graphsage_maxpool_%s" % i)
+        else:
+            raise ValueError("graphsage type %s is not"
+                             " implemented" % graphsage_type)
+
+    feature = fluid.layers.gather(feature, node_index)
+    logits = fluid.layers.fc(feature,
+                             num_class,
+                             act=None,
+                             name='classification_layer')
+    proba = fluid.layers.softmax(logits)
+
+    loss = fluid.layers.softmax_with_cross_entropy(
+        logits=logits, label=node_label)
+    loss = fluid.layers.mean(loss)
+    acc = fluid.layers.accuracy(input=proba, label=node_label, k=1)
+    return loss, acc
+
+
+class GraphsageModel(object):
+    def __init__(self, args):
+        self.args = args
+
+    def forward(self):
+        args = self.args
+
+        graph_wrapper = pgl.graph_wrapper.GraphWrapper(
+            "sub_graph", node_feat=[('feats', [None, 602], np.dtype('float32'))])
+        loss, acc = build_graph_model(
+            graph_wrapper,
+            num_class=args.num_class,
+            hidden_size=args.hidden_size,
+            graphsage_type=args.graphsage_type,
+            k_hop=len(args.samples))
+
+        loss.persistable = True
+
+        self.graph_wrapper = graph_wrapper
+        self.loss = loss
+        self.acc = acc
+        return loss
+

examples/distribute_graphsage/reader.py

@@ -11,6 +11,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import os
+import sys
 import numpy as np
 import pickle as pkl
 import paddle
@@ -147,3 +149,48 @@ def multiprocess_graph_reader(
 
     return reader()
 
+
+def load_data():
+    """
+        data from https://github.com/matenure/FastGCN/issues/8
+        reddit.npz: https://drive.google.com/open?id=19SphVl_Oe8SJ1r87Hr5a6znx3nJu1F2J
+        reddit_index_label is preprocess from reddit.npz without feats key.
+    """
+    data_dir = os.path.dirname(os.path.abspath(__file__))
+    data = np.load(os.path.join(data_dir, "data/reddit_index_label.npz"))
+
+    num_class = 41
+
+    train_label = data['y_train']
+    val_label = data['y_val']
+    test_label = data['y_test']
+
+    train_index = data['train_index']
+    val_index = data['val_index']
+    test_index = data['test_index']
+
+    return {
+        "train_index": train_index,
+        "train_label": train_label,
+        "val_label": val_label,
+        "val_index": val_index,
+        "test_index": test_index,
+        "test_label": test_label,
+        "num_class": 41
+    }
+
+def get_iter(args, graph_wrapper, mode):
+    data = load_data()
+    train_iter = multiprocess_graph_reader(
+        graph_wrapper,
+        samples=args.samples,
+        num_workers=args.num_sample_workers,
+        batch_size=args.batch_size,
+        node_index=data['train_index'],
+        node_label=data["train_label"])
+    return train_iter
+
+if __name__ == '__main__':
+    for e in train_iter():
+        print(e)
+

examples/distribute_graphsage/redis_setup/before_hook.sh

+#!/bin/bash
+set -x
+
+srcdir=./src
+
+# Data preprocessing
+python ./src/preprocess.py
+
+# Download and compile redis
+export PATH=$PWD/redis-5.0.5/src:$PATH
+if [ ! -f ./redis.tar.gz ]; then
+    curl https://codeload.github.com/antirez/redis/tar.gz/5.0.5 -o ./redis.tar.gz
+fi
+tar -xzf ./redis.tar.gz
+cd ./redis-5.0.5/
+make
+cd -
+
+# Install python deps
+python -m pip install -U pip
+pip install -r ./src/requirements.txt -U
+
+# Run redis server
+sh ./src/run_server.sh
+
+# Dumping data into redis
+source ./redis_graph.cfg
+sh ./src/dump_data.sh $edge_path $server_list $num_nodes $node_feat_path
+
+exit 0
+

examples/distribute_graphsage/redis_setup/redis_graph.cfg

+# dump config
+edge_path=../data/edge.txt
+node_feat_path=../data/feats.npz
+num_nodes=232965
+server_list=./server.list
+

examples/distribute_graphsage/redis_setup/src/build_graph.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+import json
+import logging
+from collections import defaultdict
+import tqdm
+import redis
+from redis._compat import b, unicode, bytes, long, basestring
+from rediscluster.nodemanager import NodeManager
+from rediscluster.crc import crc16
+import argparse
+import time
+import pickle
+import numpy as np
+import scipy.sparse as sp
+
+log = logging.getLogger(__name__)
+root = logging.getLogger()
+root.setLevel(logging.DEBUG)
+
+handler = logging.StreamHandler(sys.stdout)
+handler.setLevel(logging.DEBUG)
+formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+handler.setFormatter(formatter)
+root.addHandler(handler)
+
+
+def encode(value):
+    """
+    Return a bytestring representation of the value.
+    This method is copied from Redis' connection.py:Connection.encode
+    """
+    if isinstance(value, bytes):
+        return value
+    elif isinstance(value, (int, long)):
+        value = b(str(value))
+    elif isinstance(value, float):
+        value = b(repr(value))
+    elif not isinstance(value, basestring):
+        value = unicode(value)
+    if isinstance(value, unicode):
+        value = value.encode('utf-8')
+    return value
+
+
+def crc16_hash(data):
+    return crc16(encode(data))
+
+
+def get_redis(startup_host, startup_port):
+    startup_nodes = [{"host": startup_host, "port": startup_port}, ]
+    nodemanager = NodeManager(startup_nodes=startup_nodes)
+    nodemanager.initialize()
+    rs = {}
+    for node, config in nodemanager.nodes.items():
+        rs[node] = redis.Redis(
+            host=config["host"], port=config["port"], decode_responses=False)
+    return rs, nodemanager
+
+
+def load_data(edge_path):
+    src, dst = [], []
+    with open(edge_path, "r") as f:
+        for i in tqdm.tqdm(f):
+            s, d, _ = i.split()
+            s = int(s)
+            d = int(d)
+            src.append(s)
+            dst.append(d)
+            dst.append(s)
+            src.append(d)
+    src = np.array(src, dtype="int64")
+    dst = np.array(dst, dtype="int64")
+    return src, dst
+
+
+def build_edge_index(edge_path, num_nodes, startup_host, startup_port,
+                     num_bucket):
+    #src, dst = load_data(edge_path)
+    rs, nodemanager = get_redis(startup_host, startup_port)
+
+    dst_mp, edge_mp = defaultdict(list), defaultdict(list)
+    with open(edge_path) as f:
+        for l in tqdm.tqdm(f):
+            a, b, idx = l.rstrip().split('\t')
+            a, b, idx = int(a), int(b), int(idx)
+            dst_mp[a].append(b)
+            edge_mp[a].append(idx)
+    part_dst_dicts = {}
+    for i in tqdm.tqdm(range(num_nodes)):
+        #if len(edge_index.v[i]) == 0:
+        #    continue
+        #v = edge_index.v[i].astype("int64").reshape([-1, 1])
+        #e = edge_index.eid[i].astype("int64").reshape([-1, 1])
+        if i not in dst_mp:
+            continue
+        v = np.array(dst_mp[i]).astype('int64').reshape([-1, 1])
+        e = np.array(edge_mp[i]).astype('int64').reshape([-1, 1])
+        o = np.hstack([v, e])
+        key = "d:%s" % i
+        part = crc16_hash(key) % num_bucket
+        if part not in part_dst_dicts:
+            part_dst_dicts[part] = {}
+        dst_dicts = part_dst_dicts[part]
+        dst_dicts["d:%s" % i] = o.tobytes()
+        if len(dst_dicts) > 10000:
+            slot = nodemanager.keyslot("part-%s" % part)
+            node = nodemanager.slots[slot][0]['name']
+            while True:
+                res = rs[node].hmset("part-%s" % part, dst_dicts)
+                if res:
+                    break
+                log.info("HMSET FAILED RETRY connected %s" % node)
+                time.sleep(1)
+            part_dst_dicts[part] = {}
+
+    for part, dst_dicts in part_dst_dicts.items():
+        if len(dst_dicts) > 0:
+            slot = nodemanager.keyslot("part-%s" % part)
+            node = nodemanager.slots[slot][0]['name']
+            while True:
+                res = rs[node].hmset("part-%s" % part, dst_dicts)
+                if res:
+                    break
+                log.info("HMSET FAILED RETRY connected %s" % node)
+                time.sleep(1)
+            part_dst_dicts[part] = {}
+    log.info("dst_dict Done")
+
+
+def build_edge_id(edge_path, num_nodes, startup_host, startup_port,
+                  num_bucket):
+    src, dst = load_data(edge_path)
+    rs, nodemanager = get_redis(startup_host, startup_port)
+    part_edge_dict = {}
+    for i in tqdm.tqdm(range(len(src))):
+        key = "e:%s" % i
+        part = crc16_hash(key) % num_bucket
+        if part not in part_edge_dict:
+            part_edge_dict[part] = {}
+        edge_dict = part_edge_dict[part]
+        edge_dict["e:%s" % i] = int(src[i]) * num_nodes + int(dst[i])
+        if len(edge_dict) > 10000:
+            slot = nodemanager.keyslot("part-%s" % part)
+            node = nodemanager.slots[slot][0]['name']
+            while True:
+                res = rs[node].hmset("part-%s" % part, edge_dict)
+                if res:
+                    break
+                log.info("HMSET FAILED RETRY connected %s" % node)
+                time.sleep(1)
+
+            part_edge_dict[part] = {}
+
+    for part, edge_dict in part_edge_dict.items():
+        if len(edge_dict) > 0:
+            slot = nodemanager.keyslot("part-%s" % part)
+            node = nodemanager.slots[slot][0]['name']
+            while True:
+                res = rs[node].hmset("part-%s" % part, edge_dict)
+                if res:
+                    break
+                log.info("HMSET FAILED RETRY connected %s" % node)
+                time.sleep(1)
+            part_edge_dict[part] = {}
+
+
+def build_infos(edge_path, num_nodes, startup_host, startup_port, num_bucket):
+    src, dst = load_data(edge_path)
+    rs, nodemanager = get_redis(startup_host, startup_port)
+    slot = nodemanager.keyslot("num_nodes")
+    node = nodemanager.slots[slot][0]['name']
+    res = rs[node].set("num_nodes", num_nodes)
+
+    slot = nodemanager.keyslot("num_edges")
+    node = nodemanager.slots[slot][0]['name']
+    rs[node].set("num_edges", len(src))
+
+    slot = nodemanager.keyslot("nf:infos")
+    node = nodemanager.slots[slot][0]['name']
+    rs[node].set("nf:infos", json.dumps([['feats', [-1, 602], 'float32'], ]))
+
+    slot = nodemanager.keyslot("ef:infos")
+    node = nodemanager.slots[slot][0]['name']
+    rs[node].set("ef:infos", json.dumps([]))
+
+
+def build_node_feat(node_feat_path, num_nodes, startup_host, startup_port, num_bucket):
+    assert node_feat_path != "", "node_feat_path empty!"
+    feat_dict = np.load(node_feat_path)
+    for k in feat_dict.keys():
+        feat = feat_dict[k]
+        assert feat.shape[0] == num_nodes, "num_nodes invalid"
+
+    rs, nodemanager = get_redis(startup_host, startup_port)
+    part_feat_dict = {}
+    for k in feat_dict.keys():
+        feat = feat_dict[k]
+        for i in tqdm.tqdm(range(num_nodes)):
+            key = "nf:%s:%i" % (k, i)
+            value = feat[i].tobytes()
+            part = crc16_hash(key) % num_bucket
+            if part not in part_feat_dict:
+                part_feat_dict[part] = {}
+            part_feat = part_feat_dict[part]
+            part_feat[key] = value
+            if len(part_feat) > 100:
+                slot = nodemanager.keyslot("part-%s" % part)
+                node = nodemanager.slots[slot][0]['name']
+                while True:
+                    res = rs[node].hmset("part-%s" % part, part_feat)
+                    if res:
+                        break
+                    log.info("HMSET FAILED RETRY connected %s" % node)
+                    time.sleep(1)
+
+                part_feat_dict[part] = {}
+
+    for part, part_feat in part_feat_dict.items():
+        if len(part_feat) > 0:
+            slot = nodemanager.keyslot("part-%s" % part)
+            node = nodemanager.slots[slot][0]['name']
+            while True:
+                res = rs[node].hmset("part-%s" % part, part_feat)
+                if res:
+                    break
+                log.info("HMSET FAILED RETRY connected %s" % node)
+                time.sleep(1)
+            part_feat_dict[part] = {}
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='gen_redis_conf')
+    parser.add_argument('--startup_port', type=int, required=True)
+    parser.add_argument('--startup_host', type=str, required=True)
+    parser.add_argument('--edge_path', type=str, default="")
+    parser.add_argument('--node_feat_path', type=str, default="")
+    parser.add_argument('--num_nodes', type=int, default=0)
+    parser.add_argument('--num_bucket', type=int, default=64)
+    parser.add_argument(
+        '--mode',
+        type=str,
+        required=True,
+        help="choose one of the following modes (clear, edge_index, edge_id, graph_attr)"
+    )
+    args = parser.parse_args()
+    log.info("Mode: {}".format(args.mode))
+    if args.mode == 'edge_index':
+        build_edge_index(args.edge_path, args.num_nodes, args.startup_host,
+                         args.startup_port, args.num_bucket)
+    elif args.mode == 'edge_id':
+        build_edge_id(args.edge_path, args.num_nodes, args.startup_host,
+                      args.startup_port, args.num_bucket)
+    elif args.mode == 'graph_attr':
+        build_infos(args.edge_path, args.num_nodes, args.startup_host,
+                    args.startup_port, args.num_bucket)
+    elif args.mode == 'node_feat':
+        build_node_feat(args.node_feat_path, args.num_nodes, args.startup_host,
+                    args.startup_port, args.num_bucket)
+    else:
+        raise ValueError("%s mode not found" % args.mode)
+

examples/distribute_graphsage/redis_setup/src/dump_data.sh

+filter(){
+    lines=`cat $1`
+    rm $1
+    for line in $lines; do
+        remote_host=`echo $line | cut -d":" -f1`
+        remote_port=`echo $line | cut -d":" -f2`
+        nc -z $remote_host $remote_port
+        if [[ $? == 0 ]]; then
+            echo $line >> $1
+        fi
+    done
+}
+
+dump_data(){
+    filter $server_list
+
+    python ./src/start_cluster.py --server_list $server_list --replicas 0
+
+    address=`head -n 1 $server_list`
+
+    ip=`echo $address | cut -d":" -f1`
+    port=`echo $address | cut -d":" -f2`
+
+    python ./src/build_graph.py --startup_host $ip        \
+        --startup_port $port        \
+        --mode node_feat        \
+        --node_feat_path $feat_fn       \
+        --num_nodes $num_nodes
+
+    # build edge index
+    python ./src/build_graph.py --startup_host $ip \
+        --startup_port $port \
+        --mode edge_index \
+        --edge_path $edge_path \
+        --num_nodes $num_nodes
+
+    # build edge id
+    #python ./src/build_graph.py --startup_host $ip \
+    #    --startup_port $port \
+    #    --mode edge_id \
+    #    --edge_path $edge_path \
+    #    --num_nodes $num_nodes
+
+    # build graph attr
+    python ./src/build_graph.py --startup_host $ip \
+        --startup_port $port \
+        --mode graph_attr \
+        --edge_path $edge_path \
+        --num_nodes $num_nodes
+
+}
+
+if [ $# -ne 4 ]; then
+    echo 'sh edge_path server_list num_nodes feat_fn'
+    exit
+fi
+num_nodes=$3
+server_list=$2
+edge_path=$1
+feat_fn=$4
+
+dump_data
+

examples/distribute_graphsage/redis_setup/src/gen_redis_conf.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+import socket
+import argparse
+import os
+temp = """port %s
+bind %s
+daemonize yes
+pidfile  /var/run/redis_%s.pid
+cluster-enabled yes
+cluster-config-file nodes.conf
+cluster-node-timeout 50000
+logfile "redis.log"
+appendonly yes"""
+
+
+def gen_config(ports):
+    if len(ports) == 0:
+        raise ValueError("No ports")
+    ip = socket.gethostbyname(socket.gethostname())
+    print("Generate redis conf")
+    for port in ports:
+        try:
+            os.mkdir("%s" % port)
+        except:
+            print("port %s directory already exists" % port)
+            pass
+        with open("%s/redis.conf" % port, 'w') as f:
+            f.write(temp % (port, ip, port))
+
+    print("Generate Start Server Scripts")
+    with open("start_server.sh", "w") as f:
+        f.write("set -x\n")
+        for ind, port in enumerate(ports):
+            f.write("# %s %s start\n" % (ip, port))
+            if ind > 0:
+                f.write("cd ..\n")
+            f.write("cd %s\n" % port)
+            f.write("redis-server redis.conf\n")
+            f.write("\n")
+
+    print("Generate Stop Server Scripts")
+    with open("stop_server.sh", "w") as f:
+        f.write("set -x\n")
+        for ind, port in enumerate(ports):
+            f.write("# %s %s shutdown\n" % (ip, port))
+            f.write("redis-cli -h %s -p %s shutdown\n" % (ip, port))
+            f.write("\n")
+
+    with open("server.list", "w") as f:
+        for ind, port in enumerate(ports):
+            f.write("%s:%s\n" % (ip, port))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description='gen_redis_conf')
+    parser.add_argument('--ports', nargs='+', type=int, default=[])
+    args = parser.parse_args()
+    gen_config(args.ports)

examples/distribute_graphsage/redis_setup/src/preprocess.py

+import os
+import sys
+
+import numpy as np
+import scipy.sparse as sp
+
+def _load_config(fn):
+    ret = {}
+    with open(fn) as f:
+        for l in f:
+            if l.strip() == '' or l.startswith('#'):
+                continue
+            k, v = l.strip().split('=')
+            ret[k] = v
+    return ret
+    
+def _prepro(config):
+    data = np.load("../data/reddit.npz")
+    adj = sp.load_npz("../data/reddit_adj.npz")
+    adj = adj.tocoo()
+    src = adj.row
+    dst = adj.col
+
+    with open(config['edge_path'], 'w') as f:
+        for idx, e in enumerate(zip(src, dst)):
+            s, d = e
+            l = "{}\t{}\t{}\n".format(s, d, idx)
+            f.write(l)
+    feats = data['feats'].astype(np.float32)
+    np.savez(config['node_feat_path'], feats=feats)
+
+if __name__ == '__main__':
+    config = _load_config('./redis_graph.cfg')
+    _prepro(config)
+

examples/distribute_graphsage/redis_setup/src/requirements.txt

+numpy
+scipy
+tqdm
+redis==2.10.6
+redis-py-cluster==1.3.6
+

examples/distribute_graphsage/redis_setup/src/run_server.sh

+start_server(){
+    ports=""
+    for i in {7430..7439}; do
+        nc -z localhost $i
+        if [[ $? != 0 ]]; then
+            ports="$ports $i"
+        fi
+    done
+    python ./src/gen_redis_conf.py --ports $ports
+    bash ./start_server.sh #启动服务器
+}
+
+start_server
+

examples/distribute_graphsage/redis_setup/src/start_cluster.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import argparse
+
+
+def build_clusters(server_list, replicas):
+    servers = []
+    with open(server_list) as f:
+        for line in f:
+            servers.append(line.strip())
+    cmd = "echo yes | redis-cli --cluster create"
+    for server in servers:
+        cmd += ' %s ' % server
+    cmd += '--cluster-replicas %s' % replicas
+    print(cmd)
+    os.system(cmd)
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='start_cluster')
+    parser.add_argument('--server_list', type=str, required=True)
+    parser.add_argument('--replicas', type=int, default=0)
+    args = parser.parse_args()
+    build_clusters(args.server_list, args.replicas)

examples/distribute_graphsage/redis_setup/test/test.sh

+#!/bin/bash 
+
+source ./redis_graph.cfg
+
+url=`head -n1 $server_list`
+shuf $edge_path | head -n 1000 | python ./test/test_redis_graph.py $url
+

examples/distribute_graphsage/redis_setup/test/test_redis_graph.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+########################################################################
+#
+# Copyright (c) 2019 Baidu.com, Inc. All Rights Reserved
+#
+# File: test_redis_graph.py
+# Author: suweiyue(suweiyue@baidu.com)
+# Date: 2019/08/19 16:28:18
+#
+########################################################################
+"""
+    Comment.
+"""
+from __future__ import division
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import sys
+
+import numpy as np
+import tqdm
+from pgl.redis_graph import RedisGraph
+
+if __name__ == '__main__':
+    host, port = sys.argv[1].split(':')
+    port = int(port)
+    redis_configs = [{"host": host, "port": port}, ]
+    graph = RedisGraph("reddit-graph", redis_configs, num_parts=64)
+    #nodes = np.arange(0, 100)
+    #for i in range(0, 100):
+    for l in tqdm.tqdm(sys.stdin):
+        l_sp = l.rstrip().split('\t')
+        if len(l_sp) != 2:
+            continue
+        i, j = int(l_sp[0]), int(l_sp[1])
+        nodes = graph.sample_predecessor(np.array([i]), 10000)
+        assert j in nodes
+

examples/distribute_graphsage/requirements.txt

+pgl==1.1.0
+pyyaml
+paddlepaddle==1.6.1
+
 scipy
 redis==2.10.6
 redis-py-cluster==1.3.6

examples/distribute_graphsage/train.py

-# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-import os
-import argparse
-import time
-
-import numpy as np
-import scipy.sparse as sp
-from sklearn.preprocessing import StandardScaler
-
-import pgl
-from pgl.utils.logger import log
-from pgl.utils import paddle_helper
-import paddle
-import paddle.fluid as fluid
-import reader
-from model import graphsage_mean, graphsage_meanpool,\
-        graphsage_maxpool, graphsage_lstm
-
-
-def load_data():
-    """
-        data from https://github.com/matenure/FastGCN/issues/8
-        reddit.npz: https://drive.google.com/open?id=19SphVl_Oe8SJ1r87Hr5a6znx3nJu1F2J
-        reddit_index_label is preprocess from reddit.npz without feats key.
-    """
-    data_dir = os.path.dirname(os.path.abspath(__file__))
-    data = np.load(os.path.join(data_dir, "data/reddit_index_label.npz"))
-
-    num_class = 41
-
-    train_label = data['y_train']
-    val_label = data['y_val']
-    test_label = data['y_test']
-
-    train_index = data['train_index']
-    val_index = data['val_index']
-    test_index = data['test_index']
-
-    return {
-        "train_index": train_index,
-        "train_label": train_label,
-        "val_label": val_label,
-        "val_index": val_index,
-        "test_index": test_index,
-        "test_label": test_label,
-        "num_class": 41
-    }
-
-
-def build_graph_model(graph_wrapper, num_class, k_hop, graphsage_type,
-                      hidden_size):
-    node_index = fluid.layers.data(
-        "node_index", shape=[None], dtype="int64", append_batch_size=False)
-
-    node_label = fluid.layers.data(
-        "node_label", shape=[None, 1], dtype="int64", append_batch_size=False)
-
-    #feature = fluid.layers.gather(feature, graph_wrapper.node_feat['feats'])
-    feature = graph_wrapper.node_feat['feats']
-    feature.stop_gradient = True
-
-    for i in range(k_hop):
-        if graphsage_type == 'graphsage_mean':
-            feature = graphsage_mean(
-                graph_wrapper,
-                feature,
-                hidden_size,
-                act="relu",
-                name="graphsage_mean_%s" % i)
-        elif graphsage_type == 'graphsage_meanpool':
-            feature = graphsage_meanpool(
-                graph_wrapper,
-                feature,
-                hidden_size,
-                act="relu",
-                name="graphsage_meanpool_%s" % i)
-        elif graphsage_type == 'graphsage_maxpool':
-            feature = graphsage_maxpool(
-                graph_wrapper,
-                feature,
-                hidden_size,
-                act="relu",
-                name="graphsage_maxpool_%s" % i)
-        elif graphsage_type == 'graphsage_lstm':
-            feature = graphsage_lstm(
-                graph_wrapper,
-                feature,
-                hidden_size,
-                act="relu",
-                name="graphsage_maxpool_%s" % i)
-        else:
-            raise ValueError("graphsage type %s is not"
-                             " implemented" % graphsage_type)
-
-    feature = fluid.layers.gather(feature, node_index)
-    logits = fluid.layers.fc(feature,
-                             num_class,
-                             act=None,
-                             name='classification_layer')
-    proba = fluid.layers.softmax(logits)
-
-    loss = fluid.layers.softmax_with_cross_entropy(
-        logits=logits, label=node_label)
-    loss = fluid.layers.mean(loss)
-    acc = fluid.layers.accuracy(input=proba, label=node_label, k=1)
-    return loss, acc
-
-
-def run_epoch(batch_iter,
-              exe,
-              program,
-              prefix,
-              model_loss,
-              model_acc,
-              epoch,
-              log_per_step=100):
-    batch = 0
-    total_loss = 0.
-    total_acc = 0.
-    total_sample = 0
-    start = time.time()
-    for batch_feed_dict in batch_iter():
-        batch += 1
-        batch_loss, batch_acc = exe.run(program,
-                                        fetch_list=[model_loss, model_acc],
-                                        feed=batch_feed_dict)
-
-        if batch % log_per_step == 0:
-            log.info("Batch %s %s-Loss %s %s-Acc %s" %
-                     (batch, prefix, batch_loss, prefix, batch_acc))
-
-        num_samples = len(batch_feed_dict["node_index"])
-        total_loss += batch_loss * num_samples
-        total_acc += batch_acc * num_samples
-        total_sample += num_samples
-    end = time.time()
-
-    log.info("%s Epoch %s Loss %.5lf Acc %.5lf Speed(per batch) %.5lf sec" %
-             (prefix, epoch, total_loss / total_sample,
-              total_acc / total_sample, (end - start) / batch))
-
-
-def main(args):
-    data = load_data()
-    log.info("preprocess finish")
-    log.info("Train Examples: %s" % len(data["train_index"]))
-    log.info("Val Examples: %s" % len(data["val_index"]))
-    log.info("Test Examples: %s" % len(data["test_index"]))
-
-    place = fluid.CUDAPlace(0) if args.use_cuda else fluid.CPUPlace()
-    train_program = fluid.Program()
-    startup_program = fluid.Program()
-    samples = []
-    if args.samples_1 > 0:
-        samples.append(args.samples_1)
-    if args.samples_2 > 0:
-        samples.append(args.samples_2)
-
-    with fluid.program_guard(train_program, startup_program):
-        graph_wrapper = pgl.graph_wrapper.GraphWrapper(
-            "sub_graph", node_feat=[('feats', [None, 602], np.dtype('float32'))])
-        model_loss, model_acc = build_graph_model(
-            graph_wrapper,
-            num_class=data["num_class"],
-            hidden_size=args.hidden_size,
-            graphsage_type=args.graphsage_type,
-            k_hop=len(samples))
-
-    test_program = train_program.clone(for_test=True)
-
-    with fluid.program_guard(train_program, startup_program):
-        adam = fluid.optimizer.Adam(learning_rate=args.lr)
-        adam.minimize(model_loss)
-
-    exe = fluid.Executor(place)
-    exe.run(startup_program)
-
-    train_iter = reader.multiprocess_graph_reader(
-        graph_wrapper,
-        samples=samples,
-        num_workers=args.sample_workers,
-        batch_size=args.batch_size,
-        node_index=data['train_index'],
-        node_label=data["train_label"])
-
-    val_iter = reader.multiprocess_graph_reader(
-        graph_wrapper,
-        samples=samples,
-        num_workers=args.sample_workers,
-        batch_size=args.batch_size,
-        node_index=data['val_index'],
-        node_label=data["val_label"])
-
-    test_iter = reader.multiprocess_graph_reader(
-        graph_wrapper,
-        samples=samples,
-        num_workers=args.sample_workers,
-        batch_size=args.batch_size,
-        node_index=data['test_index'],
-        node_label=data["test_label"])
-
-    for epoch in range(args.epoch):
-        run_epoch(
-            train_iter,
-            program=train_program,
-            exe=exe,
-            prefix="train",
-            model_loss=model_loss,
-            model_acc=model_acc,
-            log_per_step=1,
-            epoch=epoch)
-
-        run_epoch(
-            val_iter,
-            program=test_program,
-            exe=exe,
-            prefix="val",
-            model_loss=model_loss,
-            model_acc=model_acc,
-            log_per_step=10000,
-            epoch=epoch)
-
-    run_epoch(
-        test_iter,
-        program=test_program,
-        prefix="test",
-        exe=exe,
-        model_loss=model_loss,
-        model_acc=model_acc,
-        log_per_step=10000,
-        epoch=epoch)
-
-
-if __name__ == "__main__":
-    parser = argparse.ArgumentParser(description='graphsage')
-    parser.add_argument("--use_cuda", action='store_true', help="use_cuda")
-    parser.add_argument(
-        "--normalize", action='store_true', help="normalize features")
-    parser.add_argument(
-        "--symmetry", action='store_true', help="undirect graph")
-    parser.add_argument("--graphsage_type", type=str, default="graphsage_mean")
-    parser.add_argument("--sample_workers", type=int, default=10)
-    parser.add_argument("--epoch", type=int, default=10)
-    parser.add_argument("--hidden_size", type=int, default=128)
-    parser.add_argument("--batch_size", type=int, default=128)
-    parser.add_argument("--lr", type=float, default=0.01)
-    parser.add_argument("--samples_1", type=int, default=25)
-    parser.add_argument("--samples_2", type=int, default=10)
-    args = parser.parse_args()
-    log.info(args)
-    main(args)

examples/distribute_graphsage/utils.py

+# Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Implementation of some helper functions"""
+
+from __future__ import division
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import os
+import time
+import yaml
+import numpy as np
+
+from pgl.utils.logger import log
+
+
+class AttrDict(dict):
+    """Attr dict
+    """
+
+    def __init__(self, d):
+        self.dict = d
+
+    def __getattr__(self, attr):
+        value = self.dict[attr]
+        if isinstance(value, dict):
+            return AttrDict(value)
+        else:
+            return value
+
+    def __str__(self):
+        return str(self.dict)
+
+
+def load_config(config_file):
+    """Load config file"""
+    with open(config_file) as f:
+        if hasattr(yaml, 'FullLoader'):
+            config = yaml.load(f, Loader=yaml.FullLoader)
+        else:
+            config = yaml.load(f)
+
+    return AttrDict(config)

examples/distribute_graphsage/utils.sh

+
+# parse yaml file 
+function parse_yaml {
+   local prefix=$2
+   local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034')
+   sed -ne "s|^\($s\):|\1|" \
+        -e "s|^\($s\)\($w\)$s:$s[\"']\(.*\)[\"']$s\$|\1$fs\2$fs\3|p" \
+        -e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p"  $1 |
+   awk -F$fs '{
+      indent = length($1)/2;
+      vname[indent] = $2;
+      for (i in vname) {if (i > indent) {delete vname[i]}}
+      if (length($3) > 0) {
+         vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
+         printf("%s%s%s=\"%s\"\n", "'$prefix'",vn, $2, $3);
+      }
+   }'
+}
+
+eval $(parse_yaml "$(dirname "${BASH_SOURCE}")"/config.yaml)