toolHandling db, api

basic/componentHandling.py

@@ -29,18 +29,6 @@ PARAM_NOSUBNODE = ["artifact", "components", "instance"]
 DEFAULT_INST_CNT = 1
 DEFAULT_INST_SGL = "y"
 
-def getComponents(mainfct):
-    job = basic.program.Job.getInstance()
-    verify = -2 + job.getDebugLevel("job_tool")
-    job.debug(verify, "getComponents " + mainfct)
-    out = []
-    for c in comps:
-        job.debug(verify, "getComponents " + c + ": " + str(comps[c].conf))
-        print("getComponents " + c + ": " + str(comps[c].conf))
-        if mainfct in comps[c].conf["function"]:
-            out.append(c)
-    return out
-
 
 def getInstanceAttributes(conf):
     """
@@ -48,9 +36,10 @@ def getInstanceAttributes(conf):
     :param conf:
     :return: a complete set of these attributes
     """
-    out = {}
-    out[B.ATTR_INST_CNT] = DEFAULT_INST_CNT
-    out[B.ATTR_INST_SGL] = DEFAULT_INST_SGL
+    out = {
+        B.ATTR_INST_CNT: DEFAULT_INST_CNT,
+        B.ATTR_INST_SGL: DEFAULT_INST_SGL
+    }
     if B.SUBJECT_INST in conf:
         for attr in [B.ATTR_INST_CNT, B.ATTR_INST_SGL]:
             if attr in conf[B.SUBJECT_INST]:
@@ -58,6 +47,19 @@ def getInstanceAttributes(conf):
     return out
 
 
+def getComponents(mainfct):
+    job = basic.program.Job.getInstance()
+    verify = -2 + job.getDebugLevel("job_tool")
+    job.debug(verify, "getComponents " + mainfct)
+    out = []
+    for c in comps:
+        job.debug(verify, "getComponents " + c + ": " + str(comps[c].conf))
+        print("getComponents " + c + ": " + str(comps[c].conf))
+        if mainfct in comps[c].conf["function"]:
+            out.append(c)
+    return out
+
+
 class ComponentManager:
     __instance = None
     """ 

basic/constants.py

@@ -67,11 +67,20 @@ DATA_NODE_PAR  = "par"
 """ This constant defines """
 TOPIC_NODE_DB = "db"
 ATTR_DB_PARTITION = "partitioned"
-""" attribute if table is partitioned - partitions are parametrized """
+""" optional attribute if table is partitioned
+ - this keyword delimited by "+" will be replaced by partition-names which are parametrized """
 ATTR_DB_CONN_JAR = "conn_jar_name"
-""" attribute for connection-jar-file instead of connection by ip, port """
+""" optional attribute for connection-jar-file instead of connection by ip, port """
+ATTR_CONN_HOST = "hostname"
+""" optional attribute for connection-jar-file instead of connection by ip, port """
+ATTR_CONN_TENANT = "tenant"
+""" optional attribute for connection-jar-file instead of connection by ip, port """
+ATTR_DB_DATABASE = "database"
+""" attribute for technical name of the database """
+ATTR_DB_SCHEMA = "schema"
+""" optional attribute for technical name of the schema  """
 ATTR_DB_TABNAME = "tabname"
-""" attribute in order to use a different technical name for the db-table """
+""" optional attribute in order to use a different technical name for the db-table """
 PAR_DB_WHERE = "dbwhere"
 """ optional parameter with a where-clause """
 PAR_DB_PARTITION = "dbparts"

basic/toolHandling.py

@@ -76,3 +76,18 @@ def getCliTool(comp):
     c = class_()
     c.setComp(comp)
     return c
+
+def getApiTool(comp):
+    job = basic.program.Job.getInstance()
+    verify = int(job.getDebugLevel("db_tool"))
+    apitype = getCompAttr(comp, B.TOPIC_NODE_API, B.ATTR_TYPE, "")
+    toolname = "api"+apitype+"_tool"
+    filepath = os.path.join(job.conf.confs[B.SUBJECT_PATH][B.ATTR_PATH_PROGRAM], "utils", toolname+".py")
+    #comp.m.debug(verify, "toolname "+filepath)
+    if not os.path.exists(filepath):
+        raise FileNotFoundError("file for tool "+toolname+" does not exist "+filepath)
+    cmodul = importlib.import_module("utils."+toolname)
+    class_ = getattr(cmodul, "ApiFcts")
+    c = class_()
+    c.setComp(comp)
+    return c

components/testexec.py

@@ -120,6 +120,25 @@ class Testexecuter():
         self.m.debug(verify, "--- " + str(inspect.currentframe().f_code.co_name) + "() finished at " + datetime.now().strftime("%Y%m%d_%H%M%S") + " for " + str(self.name).upper())
 
 
+    def composeFileClauses(self, pattern):
+        job = basic.program.Job.getInstance()
+        out = {}
+        attr = utils.db_abstract.getDbAttributes(self, "null")
+        while "{" in pattern:
+            pre = pattern[0:pattern.index("{")]
+            pat = pattern[pattern.index("{"):pattern.index("}")]
+            post = pattern[pattern.index("}"):]
+            pattern = pre+attr[pat]+post
+        if (hasattr(job.par, B.PAR_DB_PARTITION)) and (attr[B.ATTR_DB_PARTITION] != "n"):
+            parts = getattr(job.par, B.PAR_DB_PARTITION)
+            a = parts.split(",")
+            for p in a:
+                pattern = pattern.replace(attr[B.ATTR_DB_PARTITION], p)
+                out[p] = pattern
+        else:
+            out["ALL"] = pattern
+        return out
+
     def composeSqlClauses(self, sql):
         job = basic.program.Job.getInstance()
         out = {}
@@ -130,8 +149,10 @@ class Testexecuter():
         print(sql_new)
         attr = utils.db_abstract.getDbAttributes(self, table)
         if attr[B.ATTR_DB_TABNAME] != "":
-            table = self.conf[B.SUBJECT_ARTS][table][B.ATTR_DB_TABNAME]
-        sql_new += " " + table
+            table = attr[B.ATTR_DB_TABNAME]
+        if attr[B.ATTR_DB_SCHEMA] != "":
+            table = attr[B.ATTR_DB_SCHEMA]+"."+table
+        sql_new += " "+attr[B.ATTR_DB_DATABASE]+"."+table
         print(sql_new)
         if (hasattr(job.par, B.PAR_DB_WHERE)):
             sql_new += " WHERE "+getattr(job.par, B.PAR_DB_WHERE)

utils/api_abstract.py

@@ -5,25 +5,21 @@
 # Source : gitea.ucarmesin.de
 # ---------------------------------------------------------------------------------------------------------
 """
-This abstract class CliFcts defines the interface for the execution of any command-line-functions.
+This abstract class ApiFcts defines the interface for the execution of any command-line-functions.
 It uses the following configuration
-  .a) COMP.conf->artifact->cli->[system] : for structural attributes of the operating-system \n
-  .c) COMP.conf->conn->[cli] : for connection-attributes and structural attributes,
+  .a) COMP.conf->artifact->api->[system] : for structural attributes of the operating-system \n
+  .c) COMP.conf->conn->[api] : for connection-attributes and structural attributes,
   maybe specialized for the operating-system
 
 The attribute type resolves which technique is used, implemented in a specific tool-class:
-  * cmd,bash,powersh ... for specific local operating-system
-  * ssh,hadoop ... for specific remote operating-system
+  * nifi,
 The main tasks are: \n
-.1. executing the command-array - with attributes
-   * conn.ip, host, port, user, password, ... for synchronous db-connection
-   * conn.root, ... for path-definitions for file-implementations (csv, )
 
 """
 import basic.program
 import utils.config_tool
 
-class CliFcts():
+class ApiFcts():
     """
     This interface defines each necessary connection to any kind of database.
     The specific technique how to connect to the concrete DBMS has to be implemented in the specific tool.
@@ -35,7 +31,17 @@ class CliFcts():
     def setComp(self, comp):
         self.comp = comp
 
-    def execCommand(self, comp, command):
+    def startCommand(self, comp, args):
+        """ method to execute the statement
+        this method should only called by the class itself """
+        raise Exception("method is not implemented")
+
+    def statusCommand(self, comp, args):
+        """ method to execute the statement
+        this method should only called by the class itself """
+        raise Exception("method is not implemented")
+
+    def stopCommand(self, comp, args):
         """ method to execute the statement
         this method should only called by the class itself """
         raise Exception("method is not implemented")

utils/db_abstract.py

@@ -43,9 +43,9 @@ import utils.config_tool
 import basic.constants as B
 import os
 
-DFLT_DB_PARTITION = "n"
+DEFAULT_DB_PARTITION = "n"
 """ attribute if table is partitioned - partitions are parametrized """
-DFLT_DB_CONN_JAR = "n"
+DEFAULT_DB_CONN_JAR = "n"
 """ attribute for connection-jar-file instead of connection by ip, port """
 
 
@@ -57,9 +57,11 @@ def getDbAttributes(comp, table):
       * comp.artifact.[db].[table].attr
     """
     out = {
+        B.ATTR_DB_DATABASE: "",
+        B.ATTR_DB_SCHEMA: "",
         B.ATTR_DB_TABNAME: "",
-        B.ATTR_DB_PARTITION: DFLT_DB_PARTITION,
-        B.ATTR_DB_CONN_JAR: DFLT_DB_CONN_JAR
+        B.ATTR_DB_PARTITION: DEFAULT_DB_PARTITION,
+        B.ATTR_DB_CONN_JAR: DEFAULT_DB_CONN_JAR
     }
     for attr in out.keys():
         print(attr)

utils/dbsfile_tool.py

@@ -4,6 +4,12 @@
 # Author : Ulrich Carmesin
 # Source : gitea.ucarmesin.de
 # ---------------------------------------------------------------------------------------------------------
+"""
+This class is a technical implementation for Hive-connection with spark - typically used in a
+Machine Learning environment for example in hadoop
+"""
+import json
+
 import basic.program
 import utils.config_tool
 import utils.db_abstract
@@ -27,17 +33,17 @@ class DbFcts(utils.db_abstract.DbFcts):
         # attr = self.getDbAttributes(table)
         job = basic.program.Job.getInstance()
         verify = -1+job.getDebugLevel("db_tool")
-        cmd = "SELECT "+"*" #",".join(self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER])
-        cmd += " FROM "+table
-        sqls = self.comp.composeSqlClauses(cmd)
+        pattern = "s3a://{hostname}/data/{tenant}/mt/sandboxes/{job.par.usecae}/{job.par.workspace}/{outfile}/VR_+reg+/"
+        files = self.comp.composeFileClauses(pattern)
         data = []
-        for k in sqls.keys():
-            sql = sqls[k]
+        for k in files.keys():
+            sql = files[k]
             if dry == 1:
                 spark = self.getConnector()
-                df = spark.sql(sql)
-                for r in df:
-                    data.append(r)
+                df = spark.read.parquet(sql)
+                dfj = df.toJSON()
+                for r in dfj.collect():
+                    data.append(json.loads(r))
             else:
                 print("select "+sql)
             #self.comp.m.logInfo(cmd)

utils/dbshive_tool.py

@@ -4,6 +4,13 @@
 # Author : Ulrich Carmesin
 # Source : gitea.ucarmesin.de
 # ---------------------------------------------------------------------------------------------------------
+"""
+This class is a technical implementation for Hive-connection with spark - typically used in a
+Machine Learning environment for example in hadoop
+"""
+import json
+import os
+
 import basic.program
 import utils.config_tool
 import utils.db_abstract
@@ -27,7 +34,7 @@ class DbFcts(utils.db_abstract.DbFcts):
         # attr = self.getDbAttributes(table)
         job = basic.program.Job.getInstance()
         verify = -1+job.getDebugLevel("db_tool")
-        cmd = "SELECT "+"*" #",".join(self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER])
+        cmd = "SELECT "+",".join(self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER])
         cmd += " FROM "+table
         sqls = self.comp.composeSqlClauses(cmd)
         data = []
@@ -35,14 +42,15 @@ class DbFcts(utils.db_abstract.DbFcts):
             sql = sqls[k]
             if dry == 1:
                 spark = self.getConnector()
-                df = spark.sql(cmd)
-                for r in df:
-                    data.append(r)
+                df = spark.sql(sql)
+                dfj = df.toJSON()
+                for r in dfj.collect():
+                    data.append(json.loads(r))
             else:
                 print("select "+sql)
-            #self.comp.m.logInfo(cmd)
-        #tdata[B.DATA_NODE_HEADER] = self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]
-        #tdata[B.DATA_NODE_DATA] = data
+            self.comp.m.logInfo(sql)
+        tdata[B.DATA_NODE_HEADER] = self.comp.conf[B.DATA_NODE_DDL][table][B.DATA_NODE_HEADER]
+        tdata[B.DATA_NODE_DATA] = data
         return tdata
 
     def deleteRows(self, table):
@@ -81,10 +89,15 @@ class DbFcts(utils.db_abstract.DbFcts):
         """ add-on-method to get the connector
         this method should only called by the class itself """
         job = basic.program.Job.getInstance()
-        spark = pyspark.SparkSession\
-            .builder\
-            .appName("datest")\
-            .getOrCreate()
+        attr = self.getDbAttributes("null")
+        spark = None
+        if B.ATTR_DB_CONN_JAR in attr:
+            connectorJar = os.environ.get(attr[B.ATTR_DB_CONN_JAR])
+            spark = pyspark.SparkSession\
+                .builder\
+                .appName("datest")\
+                .config("spark.jars", f"{connectorJar}")\
+                .getOrCreate()
         return spark
 
 

utils/dbspark_tool.py

@@ -17,6 +17,12 @@ class DbFcts(utils.db_abstract.DbFcts):
   """
   def __init__(self):
     pass
+
+  def getDbAttributes(self):
+    out = {}
+
+    return out
+
   def selectRows(self, table):
     """ method to select rows from a database
     statement written in sql """