humble beginnings for subprocess- needs reworked
parent
0552f80b77
commit
3bc8908d65
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@ -3,5 +3,5 @@ project(ftests)
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set(CMAKE_CXX_STANDARD 11)
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set(SOURCE_FILES examplar.cpp src/loaders/loaders.cpp src/loaders/loaders.h src/json/jsoncpp.cpp src/loaders/JSON_Loader.cpp src/loaders/JSON_Loader.h src/loaders/helpers.cpp src/loaders/helpers.h src/loaders/Suite.cpp src/loaders/Suite.h src/loaders/Plan.cpp src/loaders/Plan.h src/loaders/Conf.cpp src/loaders/Conf.h src/loaders/Unit.cpp src/loaders/Unit.h src/loaders/Task.cpp src/loaders/Task.h)
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set(SOURCE_FILES examplar.cpp src/loaders/loaders.cpp src/loaders/loaders.h src/json/jsoncpp.cpp src/loaders/JSON_Loader.cpp src/loaders/JSON_Loader.h src/loaders/helpers.cpp src/loaders/helpers.h src/loaders/Suite.cpp src/loaders/Suite.h src/loaders/Plan.cpp src/loaders/Plan.h src/loaders/Conf.cpp src/loaders/Conf.h src/loaders/Unit.cpp src/loaders/Unit.h src/loaders/Task.cpp src/loaders/Task.h src/sproc/Sproc.cpp src/sproc/Sproc.h)
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add_executable(ftests ${SOURCE_FILES})
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@ -1,4 +1,4 @@
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{
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"units_path": "/home/phanes/Development/internal/Examplar/conf/units/all_test.units",
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"plan_path": "/home/phanes/Development/internal/Examplar/conf/plans/test.plan"
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"units_path": "/home/phanes/development/internal/Examplar/conf/units/all_test.units",
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"plan_path": "/home/phanes/development/internal/Examplar/conf/plans/test.plan"
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}
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@ -7,7 +7,7 @@ int main( )
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bool verbose = true;
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// A Plan is made up of Tasks, and a Suite is made up of Units.
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// A Plan declares what units are executed and a Suite declares the definitions of those units.
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Conf configuration = Conf("/home/phanes/Development/internal/Examplar/conf/config.json", verbose );
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Conf configuration = Conf("/home/phanes/development/internal/Examplar/conf/config.json", verbose );
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// load the configuration file which contains filepaths to definitions of a plan and definitions of units.
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std::string definitions_file = configuration.get_units_path();
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@ -1,6 +1,7 @@
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#include "Task.h"
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#include <unistd.h>
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#include <stdio.h>
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#include "../sproc/Sproc.h"
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/// Task_InvalidDataStructure - Exception thrown when a Task is defined with invalid JSON.
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class Task_InvalidDataStructure: public std::runtime_error { public:
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@ -96,75 +97,15 @@ void Task::execute( bool verbose )
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std::cout << "\t Executing target \"" << this->definition.get_target() << "\"." << std::endl;
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}
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this->do_raw_command();
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}
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ExecutionInput execIn;
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Execution Result;
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int Task::do_raw_command( std::string command, std::string & STDOUT, std::string & STDIN );
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execIn.executionString = this->definition.get_target();
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int execution_status = Sproc::execute( execIn, Result );
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if ( execution_status )
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{
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/*
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* since pipes are unidirectional, we need two pipes. one for data to flow from parent's stdout to child's stdin and
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* the other for child's stdout to flow to parent's stdin
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*/
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#define NUM_PIPES 2
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#define PARENT_WRITE_PIPE 0
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#define PARENT_READ_PIPE 1
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int pipes[NUM_PIPES][2];
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/*
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* always in a pipe[], pipe[0] is for read and pipe[1] is for write
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*/
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#define READ_FD 0
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#define WRITE_FD 1
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#define PARENT_READ_FD ( pipes[PARENT_READ_PIPE][READ_FD] )
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#define PARENT_WRITE_FD ( pipes[PARENT_WRITE_PIPE][WRITE_FD] )
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#define CHILD_READ_FD ( pipes[PARENT_WRITE_PIPE][READ_FD] )
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#define CHILD_WRITE_FD ( pipes[PARENT_READ_PIPE][WRITE_FD] )
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int outfd[2];
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int infd[2];
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// pipes for parent to write and read
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pipe(pipes[PARENT_READ_PIPE]);
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pipe(pipes[PARENT_WRITE_PIPE]);
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if(!fork()) {
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char *argv[]={ "/usr/bin/bc", "-q", 0};
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dup2(CHILD_READ_FD, STDIN_FILENO);
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dup2(CHILD_WRITE_FD, STDOUT_FILENO);
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/* Close fds not required by child. Also, we don't
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want the exec'ed program to know these existed */
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close(CHILD_READ_FD);
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close(CHILD_WRITE_FD);
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close(PARENT_READ_FD);
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close(PARENT_WRITE_FD);
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execv(argv[0], argv);
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} else {
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char buffer[100];
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int count;
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/* close fds not required by parent */
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close(CHILD_READ_FD);
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close(CHILD_WRITE_FD);
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// Write to child’s stdin
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write(PARENT_WRITE_FD, "2^32\n", 5);
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// Read from child’s stdout
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count = read(PARENT_READ_FD, buffer, sizeof(buffer)-1);
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if (count >= 0) {
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buffer[count] = 0;
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printf("%s", buffer);
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} else {
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printf("IO Error\n");
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}
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std::cout << std::endl << "STDOUT:" << std::endl<< Result.STDOUT << std::endl;
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}
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}
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@ -0,0 +1,7 @@
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#include "Sproc.h"
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int Sproc::execute(ExecutionInput input, Execution &output)
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{
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output.STDOUT = "it worked";
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}
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@ -0,0 +1,32 @@
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#ifndef FTESTS_SPROC_H
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#define FTESTS_SPROC_H
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#include "string"
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struct ExecutionInput {
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std::string executionString;
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// std::string STDIN;
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// std::vector<KeyValuePair> EnvironmentVariables;
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};
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struct Execution {
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//input
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ExecutionInput input;
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// output
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int return_code;
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std::string STDOUT;
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std::string STDERR;
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};
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// executes a subprocess and captures STDOUT, STDERR, and return code.
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// should be able to recieve path of binary to be executed as well as any parameters
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class Sproc {
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public:
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// call the object. returnvalue is enum representing external execution attempt not binary exit code
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static int execute( ExecutionInput input, Execution & output );
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};
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#endif //FTESTS_SPROC_H
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