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import groovy.transform.InheritConstructors
import groovy.sql.Sql
import groovy.sql.DataSet
import java.security.MessageDigest
import java.util.regex.Pattern
@InheritConstructors
class PostgreSQLException extends Exception {}
def content = request.getContent().asMap()
assert content.sql
assert content.db_type_id
assert content.schema_short_code
assert content.sql.size() <= 8000
def execQueryStatement(connection, statement, rethrow) {
def set = [ RESULTS: [ COLUMNS: [], DATA: [] ], SUCCEEDED: true, STATEMENT: statement ]
long startTime = (new Date()).toTimestamp().getTime()
try {
connection.eachRow(statement, { row ->
def meta = row.getMetaData()
int columnCount = meta.getColumnCount()
int i = 0
def data = []
// this would only be true for the first row in the set
if (set.RESULTS.COLUMNS.size() == 0) {
set.EXECUTIONTIME = ((new Date()).toTimestamp().getTime() - startTime)
for (i = 1; i <= columnCount; i++) {
set.RESULTS.COLUMNS.add(meta.getColumnName(i))
}
}
for (i = 0; i < columnCount; i++) {
switch ( meta.getColumnType((i+1)) ) {
case java.sql.Types.TIMESTAMP:
data.add(row.getAt(i).format("MMMM, dd yyyy HH:mm:ss"))
break;
case java.sql.Types.TIME:
data.add(row.getAt(i).format("MMMM, dd yyyy HH:mm:ss"))
break;
case java.sql.Types.DATE:
data.add(row.getAt(i).format("MMMM, dd yyyy HH:mm:ss"))
break;
default:
data.add(row.getAt(i))
}
}
set.RESULTS.DATA.add(data)
})
} catch (e) {
def errorMessage = e.getMessage()
// terrible, but if you have a better idea please post it here: http://stackoverflow.com/q/22592508/808921
if ( ((Boolean) errorMessage =~ /No results were returned by the query/)) {
set.EXECUTIONTIME = ((new Date()).toTimestamp().getTime() - startTime)
} else if ( ((Boolean) errorMessage =~ /current transaction is aborted, commands ignored until end of transaction block$/) && rethrow) {
throw new PostgreSQLException(statement)
} else if ( ((Boolean) errorMessage =~ /insert or update on table "deferred_.*" violates foreign key constraint "deferred_.*_ref"/)) {
set.ERRORMESSAGE = "Explicit commits are not allowed within the query panel."
set.SUCCEEDED = false
} else if (
((Boolean) errorMessage =~ /Cannot execute statement in a READ ONLY transaction./) ||
((Boolean) errorMessage =~ /Can not issue data manipulation statements with executeQuery/)
) {
set.ERRORMESSAGE = "DDL and DML statements are not allowed in the query panel for MySQL; only SELECT statements are allowed. Put DDL and DML in the schema panel."
set.SUCCEEDED = false
} else {
set.ERRORMESSAGE = errorMessage
set.SUCCEEDED = false
}
}
return set
}
def schema_def = openidm.read("system/fiddles/schema_defs/" + content.db_type_id + "_" + content.schema_short_code)
assert schema_def != null
def db_type = schema_def.relationships.db_type
// Update the timestamp for the schema_def each time this instance is used, so we know if it should stay running longer
schema_def.last_used = (new Date().format("yyyy-MM-dd HH:mm:ss.S"))
openidm.update("system/fiddles/schema_defs/" + schema_def._id, null, schema_def)
// Save a copy of this query (or retrieve the details of one that already exists)
def query = openidm.create("system/fiddles/queries",
null,
[
"md5": "n/a",
"sql": content.sql,
"statement_separator": content.statement_separator,
"schema_def_id": schema_def.schema_def_id
]
)
def response = [ID: query.query_id]
if (db_type.context == "host") {
// Use the presence of a link between fiddle and host db to determine if we need to provision a running instance of this db
def hostLink = openidm.query("repo/link", [
"_queryId": "links-for-firstId",
"linkType": "fiddles_hosts",
"firstId" : schema_def._id
]).result[0]
if (hostLink == null) {
openidm.action("recon",
"reconById", [:],
[
"mapping" : "fiddles_hosts",
"ids" : schema_def._id,
"waitForCompletion" : "true"
]
)
hostLink = openidm.query("repo/link", [
"_queryId": "links-for-firstId",
"linkType": "fiddles_hosts",
"firstId" : schema_def._id
]).result[0]
}
// At this point we should have a link between schema definition and running db; otherwise provisioning
// went wrong and we won't be able to connect to this db to perform our query
assert hostLink != null
// We get the details about how to connect to the running DB by doing a read on it
def hostDatabase = openidm.read("system/hosts/databases/" + hostLink.secondId)
def hostConnection = Sql.newInstance(hostDatabase.jdbc_url, hostDatabase.username, hostDatabase.pw, hostDatabase.jdbc_class_name)
hostConnection.withStatement { it.queryTimeout = 10 }
// mysql handles transactions poorly; better to just make the whole thing readonly
if (db_type.simple_name == "MySQL") {
hostConnection.getConnection().setReadOnly(true)
}
def sets = []
def deferred_table = "DEFERRED_" + content.db_type_id + "_" + content.schema_short_code
try {
hostConnection.withTransaction {
def separator = content.statement_separator ? content.statement_separator : ";"
char newline = 10
char carrageReturn = 13
def statementGroups = Pattern.compile("([\\s\\S]*?)(?=(" + separator + "\\s*)|\$)")
if (db_type.batch_separator && db_type.batch_separator.size()) {
content.sql = content.sql.replaceAll(Pattern.compile(newline + db_type.batch_separator + carrageReturn + "?(" + newline + "|\$)", Pattern.CASE_INSENSITIVE), separator)
}
if (db_type.simple_name == "Oracle") {
hostConnection.execute("INSERT INTO system." + deferred_table + " VALUES (2)")
} else if (db_type.simple_name == "PostgreSQL" ) {
hostConnection.execute("INSERT INTO " + deferred_table + " VALUES (2)")
}
try {
(statementGroups.matcher(content.sql)).each { statement ->
if (statement[1]?.size() && !((Boolean) statement[1] =~ /^\s*$/)) {
def executionPlan = null
if (db_type.execution_plan_prefix || db_type.execution_plan_suffix) {
def executionPlanSQL = (db_type.execution_plan_prefix?:"") + statement[1] + (db_type.execution_plan_suffix?:"")
executionPlanSQL = executionPlanSQL.replaceAll("#schema_short_code#", schema_def.short_code)
executionPlanSQL = executionPlanSQL.replaceAll("#query_id#", query.query_id.toString())
if (db_type.batch_separator && db_type.batch_separator.size()) {
executionPlanSQL = executionPlanSQL.replaceAll(Pattern.compile(newline + db_type.batch_separator + carrageReturn + "?(" + newline + "|\$)", Pattern.CASE_INSENSITIVE), separator)
}
// the savepoint for postgres allows us to fail safely if users provide DDL in their queries;
// normally, this would result in an exception that breaks the rest of the transaction. Save points
// preserve the transaction.
if (db_type.simple_name == "PostgreSQL") {
hostConnection.execute("SAVEPOINT sp;")
}
(statementGroups.matcher(executionPlanSQL)).each { executionPlanStatement ->
if (executionPlanStatement[1]?.size()) {
executionPlan = execQueryStatement(hostConnection,executionPlanStatement[1], false)
}
}
if (db_type.simple_name == "PostgreSQL") {
hostConnection.execute("ROLLBACK TO sp;")
}
}
sets.add(execQueryStatement(hostConnection, statement[1], true))
if (!sets[sets.size()-1]?.SUCCEEDED) {
throw new Exception("Ending query execution")
} else if (executionPlan?.SUCCEEDED) {
sets[sets.size()-1].EXECUTIONPLAN = executionPlan.RESULTS
sets[sets.size()-1].EXECUTIONPLANRAW = executionPlan.RESULTS
}
}
}
} catch (PostgreSQLException e) {
throw e
} catch (e) {
// most likely the result of the inner throw "Ending query execution"
}
hostConnection.rollback();
}
} catch (PostgreSQLException e) {
sets.add(execQueryStatement(hostConnection, e.getMessage(), false))
}
hostConnection.close()
response.sets = sets
}
response
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