def SendToBigQuery(df, batchId):
if (len(df.take(1))) > 0:
#df.printSchema()
df.persist()
# read from redis table
spark_session = s.spark_session(config['common']['appName'])
spark_session = s.setSparkConfBQ(spark_session)
# read from BigQuery
read_df = s.loadTableFromBQ(spark_session,
config['MDVariables']['targetDataset'],
config['MDVariables']['targetTable'])
#read_df = s.loadTableFromRedis(spark_session, config['RedisVariables']['targetTable'], config['RedisVariables']['keyColumn'])
# Write data to config['MDVariables']['targetTable'] in BigQuery
# look for high value tickers
for row in df.rdd.collect():
rowkey = row.rowkey
ticker = row.ticker
price = row.price
values = bigQueryAverages(ticker, price, read_df)
Average = values["average"]
standardDeviation = values["standardDeviation"]
lower = values["lower"]
upper = values["upper"]
if lower is not None and upper is not None:
hvTicker = priceComparison(ticker, price, lower, upper)
if (hvTicker == 1):
writeHighValueData(df, rowkey)
df.unpersist()
else:
print("DataFrame is empty")
def main():
print (f"""Getting average yearly prices per region for all""")
appName = config['common']['appName']
spark = s.spark_session(appName)
sc = s.sparkcontext()
spark = s.setSparkConfBQ(spark)
lst = (spark.sql("SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")).collect()
print("\nStarted at");uf.println(lst)
wSpecY = Window().partitionBy(F.date_format('Date',"yyyy"), 'regionname')
house_df = s.loadTableFromBQ(spark,config['GCPVariables']['sourceDataset'],config['GCPVariables']['sourceTable'])
house_df.printSchema()
house_df.show(2, False)
print(f"""\nAnnual House prices per regions in GBP""")
# Workout yearly aversge prices
df2 = house_df. \
select( \
F.date_format('Date', 'yyyy').cast("Integer").alias('year') \
, 'regionname' \
, round(F.avg('averageprice').over(wSpecY)).alias('AVGPricePerYear') \
, round(F.avg('flatprice').over(wSpecY)).alias('AVGFlatPricePerYear') \
, round(F.avg('TerracedPrice').over(wSpecY)).alias('AVGTerracedPricePerYear') \
, round(F.avg('SemiDetachedPrice').over(wSpecY)).alias('AVGSemiDetachedPricePerYear') \
, round(F.avg('DetachedPrice').over(wSpecY)).alias('AVGDetachedPricePerYear')). \
distinct().orderBy('Date', asending=True)
df2.show(20,False)
s.writeTableToBQ(df2,"overwrite",config['GCPVariables']['targetDataset'],config['GCPVariables']['yearlyAveragePricesAllTable'])
print(f"""created {config['GCPVariables']['yearlyAveragePricesAllTable']}""")
lst = (spark.sql("SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")).collect()
print("\nFinished at");uf.println(lst)
def main():
regionname = sys.argv[1] ## parameter passed
short = regionname.replace(" ", "").lower()
print(f"""Creating Yearly percentage tables for {regionname}""")
appName = config['common']['appName']
spark = s.spark_session(appName)
sc = s.sparkcontext()
# # Get data from BigQuery table
tableName = "yearlyaveragepricesAllTable"
start_date = "2010"
end_date = "2020"
yearTable = f"""{config['GCPVariables']['percentYearlyHousePriceChange']}_{short}"""
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
spark = s.setSparkConfBQ(spark)
read_df = s.loadTableFromBQ(
spark, config['GCPVariables']['targetDataset'],
config['GCPVariables']['yearlyAveragePricesAllTable'])
house_df = read_df.filter(
(col("Year").between(f'{start_date}', f'{end_date}'))
& (lower(col("regionname")) == f'{regionname}'.lower()))
wSpecPY = Window().orderBy('regionname', 'Year')
df_lagY = house_df.withColumn(
"prev_year_value",
F.lag(house_df['AVGPricePerYear']).over(wSpecPY))
resultY = df_lagY.withColumn('percent_change', F.when(F.isnull(house_df.AVGPricePerYear - df_lagY.prev_year_value), 0). \
otherwise(F.round(((house_df.AVGPricePerYear - df_lagY.prev_year_value) * 100.) / df_lagY.prev_year_value, 1)))
print(f"""\nYear House price changes in {regionname} in GBP""")
rsY = resultY.select('Year', 'AVGPricePerYear', 'prev_year_value',
'percent_change')
rsY.show(36, False)
s.writeTableToBQ(rsY, "overwrite", config['GCPVariables']['targetDataset'],
yearTable)
print(f"""Created {yearTable}""")
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nFinished at")
uf.println(lst)
def main():
print(f"""Getting average yearly prices per region for all""")
regionname = sys.argv[1] ## parameter passed
short = regionname.replace(" ", "").lower()
print(f"""Getting Yearly percentages tables for {regionname}""")
appName = "ukhouseprices"
spark = s.spark_session(appName)
# Get data from BigQuery table
tableName = f"""{config['GCPVariables']['percentYearlyHousePriceChange']}_{short}"""
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
spark = s.setSparkConfBQ(spark)
print("\nStarted at")
uf.println(lst)
read_df = s.loadTableFromBQ(spark, config['GCPVariables']['targetDataset'],
tableName)
summary_df = read_df.select(
col("Year"),
col("percent_change").alias("PercentYearlyChange"))
p_df = summary_df.toPandas()
print(p_df)
p_df.plot(kind='bar', stacked=False, x='Year', y=['PercentYearlyChange'])
plt.xlabel("Year", fontdict=config['plot_fonts']['font'])
plt.ylabel("Annual Percent Property Price change",
fontdict=config['plot_fonts']['font'])
plt.title(
f"""Property price fluctuations in {regionname} for the past 10 years """,
fontdict=config['plot_fonts']['font'])
plt.margins(0.15)
plt.subplots_adjust(bottom=0.25)
plt.show()
plt.close()
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nFinished at")
uf.println(lst)
foreachBatch(sendToSink). \
trigger(processingTime='30 seconds'). \
option('checkpointLocation', checkpoint_path). \
queryName(config['MDVariables']['topic']). \
start()
print(result)
except Exception as e:
print(f"""{e}, quitting""")
sys.exit(1)
#print(result.status)
#print(result.recentProgress)
#print(result.lastProgress)
self.spark.streams.awaitAnyTermination()
result.awaitTermination()
#newtopicResult.awaitTermination()
if __name__ == "__main__":
#appName = config['common']['appName']
appName = "batch"
spark_session = s.spark_session(appName)
spark_session = s.setSparkConfStreaming(spark_session)
spark_session = s.setSparkConfBQ(spark_session)
spark_context = s.sparkcontext()
mdstreaming = MDStreaming(spark_session, spark_context)
streamingDataFrame = mdstreaming.fetch_data()
def main():
regionname = sys.argv[1] ## parameter passed
short = regionname.replace(" ", "").lower()
appName = config['common']['appName']
spark = s.spark_session(appName)
spark = s.setSparkConfBQ(spark)
# Get data from BigQuery table
start_date = "201001"
end_date = "202001"
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nStarted at")
uf.println(lst)
# Model predictions
read_df = s.loadTableFromBQ(spark, config['GCPVariables']['sourceDataset'],
config['GCPVariables']['sourceTable'])
df_10 = read_df.filter(F.date_format('Date',"yyyyMM").cast("Integer").between(f'{start_date}', f'{end_date}') & (lower(col("regionname"))== f'{regionname}'.lower())). \
select(F.date_format('Date',"yyyyMM").cast("Integer").alias("Date") \
, round(col("flatprice")).alias("flatprice") \
, round(col("terracedprice")).alias("terracedprice")
, round(col("semidetachedprice")).alias("semidetachedprice")
, round(col("detachedprice").alias("detachedprice")))
print(df_10.toPandas().columns.tolist())
p_dfm = df_10.toPandas() # converting spark DF to Pandas DF
# Non-Linear Least-Squares Minimization and Curve Fitting
# Define model to be Lorentzian and depoly it
model = LorentzianModel()
n = len(p_dfm.columns)
for i in range(n):
if (p_dfm.columns[i] != 'Date'): # yyyyMM is x axis in integer
# it goes through the loop and plots individual average curves one by one and then prints a report for each y value
vcolumn = p_dfm.columns[i]
print(vcolumn)
params = model.guess(p_dfm[vcolumn], x=p_dfm['Date'])
result = model.fit(p_dfm[vcolumn], params, x=p_dfm['Date'])
# plot the data points, initial fit and the best fit
plt.plot(p_dfm['Date'], p_dfm[vcolumn], 'bo', label='data')
plt.plot(p_dfm['Date'],
result.init_fit,
'k--',
label='initial fit')
plt.plot(p_dfm['Date'], result.best_fit, 'r-', label='best fit')
plt.legend(loc='upper left')
plt.xlabel("Year/Month", fontdict=config['plot_fonts']['font'])
plt.text(0.35,
0.55,
"Fit Based on Non-Linear Lorentzian Model",
transform=plt.gca().transAxes,
color="grey",
fontsize=9)
if vcolumn == "flatprice": property = "Flat"
if vcolumn == "terracedprice": property = "Terraced"
if vcolumn == "semidetachedprice": property = "semi-detached"
if vcolumn == "detachedprice": property = "detached"
plt.ylabel(f"""{property} house prices in millions/GBP""",
fontdict=config['plot_fonts']['font'])
plt.title(
f"""Monthly {property} price fluctuations in {regionname}""",
fontdict=config['plot_fonts']['font'])
plt.xlim(200901, 202101)
print(result.fit_report())
plt.show()
plt.close()
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nFinished at")
uf.println(lst)
def main():
appName = config['common']['appName']
spark = s.spark_session(appName)
sc = s.sparkcontext()
spark = s.setSparkConfBQ(spark)
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nStarted at")
uf.println(lst)
print(
f"""Reading from parquet file {config['ParquetVariables']['sourceSmall']}"""
)
# read from the source file
currentSnapshot = spark.read.load(
config['ParquetVariables']['sourceSmall'])
currentSnapshot.printSchema()
#currentSnapshot.show()
print(f"""\nRows in source file is""", currentSnapshot.count())
print(currentSnapshot.rdd.getStorageLevel())
currentSnapshot = currentSnapshot.repartition(5)
print(currentSnapshot.rdd.getStorageLevel())
# read from delta files
deltaFile = "gs://etcbucket/randomdata/staging/randomdatapy_208150201_208150210"
newAddedDeltaFiles = spark.read.load(deltaFile)
# check missing records with source file
# find out IDs that do not exist in source
newAddedDeltaFiles.createOrReplaceTempView("newAddedDeltaFiles")
currentSnapshot.createOrReplaceTempView("currentSnapshot")
sqltext = """SELECT
newAddedDeltaFiles.ID
, newAddedDeltaFiles.CLUSTERED
, newAddedDeltaFiles.SCATTERED
, newAddedDeltaFiles.RANDOMISED
, newAddedDeltaFiles.RANDOM_STRING
, newAddedDeltaFiles.SMALL_VC
, newAddedDeltaFiles.PADDING
FROM newAddedDeltaFiles
LEFT OUTER JOIN currentSnapshot ON newAddedDeltaFiles.ID = currentSnapshot.ID
WHERE currentSnapshot.ID IS NULL ORDER BY newAddedDeltaFiles.ID"""
print(f"""\nRows in deltafiles that do not exist in source file""",
currentSnapshot.count())
missingRows = spark.sql(sqltext)
newSnapshot = currentSnapshot.union(missingRows)
print(newSnapshot.orderBy(col("ID")).show(10000))
sys.exit()
#spark.sql(sqltext).write.mode(saveMode)
print(
f"""Writing to parquet file {config['ParquetVariables']['targetLocation']}"""
)
df2.write.mode(config['ParquetVariables']['overwrite']).parquet(
config['ParquetVariables']['targetLocation'])
df3 = spark.read.load(config['ParquetVariables']['targetLocation'])
print(
f"""Reading from parquet file {config['ParquetVariables']['targetLocation']}"""
)
print(f"""\nRows in target table is""", df3.count())
lst = (spark.sql(
"SELECT FROM_unixtime(unix_timestamp(), 'dd/MM/yyyy HH:mm:ss.ss') ")
).collect()
print("\nFinished at")
uf.println(lst)
