Ejemplo n.º 1
0
func felt(w http.ResponseWriter, r *http.Request) {
	if err := feltD.CheckParams(r.URL.Query()); err != nil {
		web.BadRequest(w, r, err.Error())
		return
	}

	publicID := r.URL.Query().Get("publicID")

	var d string

	err := db.QueryRow("select publicid FROM qrt.quake_materialized where publicid = $1", publicID).Scan(&d)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid publicID: "+publicID)
		return
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	res, err := client.Get(feltURL + publicID + ".geojson")
	defer res.Body.Close()
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	b, err := ioutil.ReadAll(res.Body)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	// Felt returns a 400 when it should probably be a 404.  Tapestry quirk?
	switch {
	case 200 == res.StatusCode:
		web.Ok(w, r, &b)
		return
	case 4 == res.StatusCode/100:
		web.NotFound(w, r, string(b))
		return
	case 5 == res.StatusCode/500:
		web.ServiceUnavailable(w, r, errors.New("error proxying felt resports.  Shrug."))
		return
	}

	web.ServiceUnavailable(w, r, errors.New("unknown response from felt."))
}
Ejemplo n.º 2
0
/*
returns a zero length list if no sites are found.
*/
func getSites(w http.ResponseWriter, r *http.Request) ([]siteQ, bool) {
	var sites = make([]siteQ, 0)

	for _, ns := range strings.Split(r.URL.Query().Get("sites"), ",") {
		nss := strings.Split(ns, ".")
		if len(nss) != 2 {
			web.BadRequest(w, r, "invalid sites query.")
			return sites, false
		}
		sites = append(sites, siteQ{networkID: nss[0], siteID: nss[1]})
	}

	for _, s := range sites {
		err := db.QueryRow("select name FROM fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1", s.networkID, s.siteID).Scan(&s.name)
		if err == sql.ErrNoRows {
			web.NotFound(w, r, "invalid siteID and networkID combination: "+s.siteID+" "+s.networkID)
			return sites, false
		}
		if err != nil {
			web.ServiceUnavailable(w, r, err)
			return sites, false
		}
	}

	return sites, true
}
Ejemplo n.º 3
0
func quake(w http.ResponseWriter, r *http.Request) {
	if len(r.URL.Query()) != 0 {
		web.BadRequest(w, r, "incorrect number of query parameters.")
		return
	}

	publicID := r.URL.Path[quakeLen:]

	// TODO bother with this?
	if !publicIDRe.MatchString(publicID) {
		web.BadRequest(w, r, "invalid publicID: "+publicID)
		return
	}

	var d string

	// Check that the publicid exists in the DB.  This is needed as the handle method will return empty
	// JSON for an invalid publicID.
	err := db.QueryRow("select publicid FROM qrt.quake_materialized where publicid = $1", publicID).Scan(&d)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid publicID: "+publicID)
		return
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	err = db.QueryRow(
		`SELECT row_to_json(fc)
                         FROM ( SELECT 'FeatureCollection' as type, array_to_json(array_agg(f)) as features
                         FROM (SELECT 'Feature' as type,
                         ST_AsGeoJSON(q.origin_geom)::json as geometry,
                         row_to_json((SELECT l FROM 
                         	(
                         		SELECT 
                         		publicid AS "publicID",
                                to_char(origintime, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"') as "time",
                                depth, 
                                magnitude, 
                                type, 
                                agency, 
                                locality,
                                qrt.mmi_to_intensity(maxmmi) as intensity,
                                qrt.mmi_to_intensity(mmi_newzealand) as "regionIntensity",
                                qrt.quake_quality(status, usedphasecount, magnitudestationcount) as quality,
                                to_char(updatetime, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"') as "modificationTime"
                           ) as l
                         )) as properties FROM qrt.quake_materialized as q where publicid = $1 ) As f )  as fc`, publicID).Scan(&d)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	b := []byte(d)
	web.Ok(w, r, &b)
}
Ejemplo n.º 4
0
// validTypeMethod checks that the typeID and methodID exists in the DB
// and are a valid combination.
func validTypeMethod(w http.ResponseWriter, r *http.Request, typeID, methodID string) bool {
	var d string

	err := db.QueryRow("SELECT typepk FROM fits.type join fits.type_method using (typepk) join fits.method using (methodpk)  WHERE typeid = $1 and methodid = $2", typeID, methodID).Scan(&d)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid methodID for typeID: "+methodID+" "+typeID)
		return false
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return false
	}

	return true
}
Ejemplo n.º 5
0
// validType checks that the typeID exists in the DB.
func validType(w http.ResponseWriter, r *http.Request, typeID string) bool {
	var d string

	err := db.QueryRow("select typeID FROM fits.type where typeID = $1", typeID).Scan(&d)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid typeID: "+typeID)
		return false
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return false
	}

	return true
}
Ejemplo n.º 6
0
// validSite checks that the siteID and networkID combination exists in the DB.
func validSite(w http.ResponseWriter, r *http.Request, networkID, siteID string) bool {
	var d string

	err := db.QueryRow("select siteID FROM fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1", networkID, siteID).Scan(&d)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid siteID and networkID combination: "+siteID+" "+networkID)
		return false
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return false
	}

	return true
}
Ejemplo n.º 7
0
func getSite(w http.ResponseWriter, r *http.Request) (siteQ, bool) {
	s := siteQ{
		networkID: r.URL.Query().Get("networkID"),
		siteID:    r.URL.Query().Get("siteID"),
	}

	err := db.QueryRow("select name FROM fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1", s.networkID, s.siteID).Scan(&s.name)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid siteID and networkID combination: "+s.siteID+" "+s.networkID)
		return s, false
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return s, false
	}

	return s, true
}
Ejemplo n.º 8
0
func getType(w http.ResponseWriter, r *http.Request) (typeQ, bool) {
	t := typeQ{
		typeID: r.URL.Query().Get("typeID"),
	}

	err := db.QueryRow("select type.name, type.description, unit.symbol FROM fits.type join fits.unit using (unitpk) where typeID = $1",
		t.typeID).Scan(&t.name, &t.description, &t.unit)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid typeID: "+t.typeID)
		return t, false
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return t, false
	}

	return t, true
}
Ejemplo n.º 9
0
func intensityReported(w http.ResponseWriter, r *http.Request) {
	if err := intensityReportedD.CheckParams(r.URL.Query()); err != nil {
		web.BadRequest(w, r, err.Error())
		return
	}

	if r.URL.Query().Get("type") != "reported" {
		web.BadRequest(w, r, "type must be reported.")
		return
	}

	zoom := r.URL.Query().Get("zoom")

	if !zoomRe.MatchString(r.URL.Query().Get("zoom")) {
		web.BadRequest(w, r, "Invalid zoom")
		return
	}

	// Check that the publicid exists in the DB.
	// If it does we keep the origintime - we need it later on.
	publicID := r.URL.Query().Get("publicID")

	originTime := time.Time{}

	err := db.QueryRow("select origintime FROM qrt.quake_materialized where publicid = $1", publicID).Scan(&originTime)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "invalid publicID: "+publicID)
		return
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	query := `SELECT row_to_json(fc)
				FROM ( SELECT 'FeatureCollection' as type, COALESCE(array_to_json(array_agg(f)), '[]') as features
					FROM (SELECT 'Feature' as type,
						ST_AsGeoJSON(s.location)::json as geometry,
						row_to_json(( select l from 
							( 
							select max_mmi,
							min_mmi,
							count
							) as l )) 
							as properties from (select st_pointfromgeohash(geohash` + zoom + `) as location, 
							min(mmi) as min_mmi, 
							max(mmi) as max_mmi, 
							count(mmi) as count 
							FROM impact.intensity_reported 
							WHERE time >= $1
							AND time <= $2
							group by (geohash` + zoom + `)) as s
			) As f )  as fc`

	var d string

	err = db.QueryRow(query, originTime.Add(time.Duration(-1*time.Minute)), originTime.Add(time.Duration(15*time.Minute))).Scan(&d)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	b := []byte(d)
	web.Ok(w, r, &b)
}
Ejemplo n.º 10
0
func observation(w http.ResponseWriter, r *http.Request) {
	if err := observationD.CheckParams(r.URL.Query()); err != nil {
		web.BadRequest(w, r, err.Error())
		return
	}

	v := r.URL.Query()

	typeID := v.Get("typeID")
	networkID := v.Get("networkID")
	siteID := v.Get("siteID")

	if !validType(w, r, typeID) {
		return
	}

	var days int

	if v.Get("days") != "" {
		var err error
		days, err = strconv.Atoi(v.Get("days"))
		if err != nil || days > 365000 {
			web.BadRequest(w, r, "Invalid days query param.")
			return
		}
	}

	var methodID string

	if v.Get("methodID") != "" {
		methodID = v.Get("methodID")
		if !validTypeMethod(w, r, typeID, methodID) {
			return
		}
	}

	// Find the unit for the CSV header
	var unit string
	err := db.QueryRow("select symbol FROM fits.type join fits.unit using (unitPK) where typeID = $1", typeID).Scan(&unit)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "unit not found for typeID: "+typeID)
		return
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	var d string
	var rows *sql.Rows

	switch {
	case days == 0 && methodID == "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s', to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) as csv FROM fits.observation 
                           WHERE 
                               sitepk = (
                                              SELECT DISTINCT ON (sitepk) sitepk from fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1 
                                            )
                               AND typepk = (
                                                        SELECT typepk FROM fits.type WHERE typeid = $3
                                                       ) 
                                 ORDER BY time ASC;`, networkID, siteID, typeID)
	case days != 0 && methodID == "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s', to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) as csv FROM fits.observation 
                           WHERE 
                               sitepk = (
                                              SELECT DISTINCT ON (sitepk) sitepk from fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1 
                                            )
                               AND typepk = (
                                                        SELECT typepk FROM fits.type WHERE typeid = $3
                                                       ) 
                                AND time > (now() - interval '`+strconv.Itoa(days)+` days')
                  		ORDER BY time ASC;`, networkID, siteID, typeID)
	case days == 0 && methodID != "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s', to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) as csv FROM fits.observation 
                           WHERE 
                               sitepk = (
                                              SELECT DISTINCT ON (sitepk) sitepk from fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1 
                                            )
                               AND typepk = (
                                                         SELECT typepk FROM fits.type WHERE typeid = $3
                                                       ) 
			AND methodpk = (
					SELECT methodpk FROM fits.method WHERE methodid = $4
				)
                                 ORDER BY time ASC;`, networkID, siteID, typeID, methodID)
	case days != 0 && methodID != "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s', to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) as csv FROM fits.observation 
                           WHERE 
                               sitepk = (
                                              SELECT DISTINCT ON (sitepk) sitepk from fits.site join fits.network using (networkpk) where siteid = $2 and networkid = $1 
                                            )
                               AND typepk = (
                                                         SELECT typepk FROM fits.type WHERE typeid = $3
                                                       ) 
		AND methodpk = (
					SELECT methodpk FROM fits.method WHERE methodid = $4
				)
                                AND time > (now() - interval '`+strconv.Itoa(days)+` days')
                  		ORDER BY time ASC;`, networkID, siteID, typeID, methodID)
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}
	defer rows.Close()

	// Use a buffer for reading the data from the DB.  Then if a there
	// is an error we can let the client know without sending
	// a partial data response.
	var b bytes.Buffer
	b.Write([]byte("date-time, " + typeID + " (" + unit + "), error (" + unit + ")"))
	b.Write(eol)
	for rows.Next() {
		err := rows.Scan(&d)
		if err != nil {
			web.ServiceUnavailable(w, r, err)
			return
		}
		b.Write([]byte(d))
		b.Write(eol)
	}
	rows.Close()

	if methodID != "" {
		w.Header().Set("Content-Disposition", `attachment; filename="FITS-`+networkID+`-`+siteID+`-`+typeID+`-`+methodID+`.csv"`)
	} else {
		w.Header().Set("Content-Disposition", `attachment; filename="FITS-`+networkID+`-`+siteID+`-`+typeID+`.csv"`)
	}

	w.Header().Set("Content-Type", web.V1CSV)
	web.OkBuf(w, r, &b)
}
Ejemplo n.º 11
0
/**
 * query end point for observation statistics including: max, min, mean, std, first and last values
 * http://fits.geonet.org.nz/observation/stats?typeID=e&siteID=HOLD&networkID=CG&days=100
 */
func observationStats(w http.ResponseWriter, r *http.Request) {
	//1. check query parameters
	if err := observationD.CheckParams(r.URL.Query()); err != nil {
		web.BadRequest(w, r, err.Error())
		return
	}

	v := r.URL.Query()

	typeID := v.Get("typeID")
	networkID := v.Get("networkID")
	siteID := v.Get("siteID")

	if !validType(w, r, typeID) {
		return
	}

	var days int
	var err error
	var tmin, tmax time.Time

	if v.Get("days") != "" {
		days, err = strconv.Atoi(v.Get("days"))
		if err != nil || days > 365000 {
			web.BadRequest(w, r, "Invalid days query param.")
			return
		}
		tmax = time.Now().UTC()
		tmin = tmax.Add(time.Duration(days*-1) * time.Hour * 24)
	}

	var methodID string

	if v.Get("methodID") != "" {
		methodID = v.Get("methodID")
		if !validTypeMethod(w, r, typeID, methodID) {
			return
		}
	}

	//2. Find the unit
	var unit string
	err = db.QueryRow("select symbol FROM fits.type join fits.unit using (unitPK) where typeID = $1", typeID).Scan(&unit)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "unit not found for typeID: "+typeID)
		return
	}

	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	// retrieve values using existing functions
	values, err := loadObs(networkID, siteID, typeID, methodID, tmin)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	mean, stdDev, err := stddevPop(networkID, siteID, typeID, methodID, tmin)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}
	stats := obstats{Unit: unit,
		Mean:             mean,
		StddevPopulation: stdDev}

	//4. get maximum, minimum, first, last values
	stats.First = values[0]
	stats.Last = values[len(values)-1]

	iMin, iMax, _ := extremes(values)
	stats.Minimum = values[iMin]
	stats.Maximum = values[iMax]

	//5. send result response
	w.Header().Set("Content-Type", web.V1JSON)
	b, err := json.Marshal(stats)
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}
	web.Ok(w, r, &b)
}
Ejemplo n.º 12
0
func spatialObs(w http.ResponseWriter, r *http.Request) {
	if err := spatialObsD.CheckParams(r.URL.Query()); err != nil {
		web.BadRequest(w, r, err.Error())
		return
	}

	v := r.URL.Query()

	var err error
	var days int
	days, err = strconv.Atoi(v.Get("days"))
	if err != nil || days > 7 || days <= 0 {
		web.BadRequest(w, r, "Invalid days query param.")
		return
	}

	start, err := time.Parse(time.RFC3339, v.Get("start"))
	if err != nil {
		web.BadRequest(w, r, "Invalid start query param.")
		return
	}

	end := start.Add(time.Duration(days) * time.Hour * 24)

	var srsName, authName string
	var srid int
	if v.Get("srsName") != "" {
		srsName = v.Get("srsName")
		srs := strings.Split(srsName, ":")
		if len(srs) != 2 {
			web.BadRequest(w, r, "Invalid srsName.")
			return
		}
		authName = srs[0]
		var err error
		srid, err = strconv.Atoi(srs[1])
		if err != nil {
			web.BadRequest(w, r, "Invalid srsName.")
			return
		}
		if !validSrs(w, r, authName, srid) {
			return
		}
	} else {
		srid = 4326
		authName = "EPSG"
		srsName = "EPSG:4326"
	}

	typeID := v.Get("typeID")

	var methodID string
	if v.Get("methodID") != "" {
		methodID = v.Get("methodID")
		if !validTypeMethod(w, r, typeID, methodID) {
			return
		}
	}

	var within string
	if v.Get("within") != "" {
		within = strings.Replace(v.Get("within"), "+", "", -1)
		if !validPoly(w, r, within) {
			return
		}
	}

	var unit string
	err = db.QueryRow("select symbol FROM fits.type join fits.unit using (unitPK) where typeID = $1", typeID).Scan(&unit)
	if err == sql.ErrNoRows {
		web.NotFound(w, r, "unit not found for typeID: "+typeID)
		return
	}
	if err != nil {
		web.ServiceUnavailable(w, r, err)
		return
	}

	var d string
	var rows *sql.Rows

	switch {
	case within == "" && methodID == "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s,%s,%s,%s,%s,%s,%s', networkid, siteid,  
		ST_X(ST_Transform(location::geometry, $4)), ST_Y(ST_Transform(location::geometry, $4)),
		height,ground_relationship, to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) 
		as csv FROM fits.observation join fits.site using (sitepk) join fits.network using (networkpk)
		WHERE typepk = (SELECT typepk FROM fits.type WHERE typeid = $1) AND 
		time >= $2 and time < $3 order by siteid asc`, typeID, start, end, srid)
	case within != "" && methodID == "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s,%s,%s,%s,%s,%s,%s', networkid, siteid,  
		ST_X(ST_Transform(location::geometry, $4)), ST_Y(ST_Transform(location::geometry, $4)),
		height,ground_relationship, to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) 
		as csv FROM fits.observation join fits.site using (sitepk) join fits.network using (networkpk)
		WHERE typepk = (SELECT typepk FROM fits.type WHERE typeid = $1) 
		AND  ST_Within(location::geometry, ST_GeomFromText($5, 4326))
		AND time >= $2 and time < $3 order by siteid asc`, typeID, start, end, srid, within)
	case within == "" && methodID != "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s,%s,%s,%s,%s,%s,%s', networkid, siteid,  
		ST_X(ST_Transform(location::geometry, $4)), ST_Y(ST_Transform(location::geometry, $4)),
		height,ground_relationship, to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) 
		as csv FROM fits.observation join fits.site using (sitepk) join fits.network using (networkpk)
		WHERE typepk = (SELECT typepk FROM fits.type WHERE typeid = $1) 
		AND methodpk = (SELECT methodpk FROM fits.method WHERE methodid = $5)
		AND time >= $2 and time < $3 order by siteid asc`, typeID, start, end, srid, methodID)
	case within != "" && methodID != "":
		rows, err = db.Query(
			`SELECT format('%s,%s,%s,%s,%s,%s,%s,%s,%s', networkid, siteid,  
		ST_X(ST_Transform(location::geometry, $4)), ST_Y(ST_Transform(location::geometry, $4)),
		height,ground_relationship, to_char(time, 'YYYY-MM-DD"T"HH24:MI:SS.MS"Z"'), value, error) 
		as csv FROM fits.observation join fits.site using (sitepk) join fits.network using (networkpk)
		WHERE typepk = (SELECT typepk FROM fits.type WHERE typeid = $1) 
		AND methodpk = (SELECT methodpk FROM fits.method WHERE methodid = $6)
		AND  ST_Within(location::geometry, ST_GeomFromText($5, 4326))
		AND time >= $2 and time < $3 order by siteid asc`, typeID, start, end, srid, within, methodID)
	}
	if err != nil {
		// not sure what a transformation error would look like.
		// Return any errors as a 404.  Could improve this by inspecting
		// the error type to check for net dial errors that shoud 503.
		web.NotFound(w, r, err.Error())
		return
	}
	defer rows.Close()

	var b bytes.Buffer
	b.Write([]byte("networkID, siteID, X (" + srsName + "), Y (" + srsName + "), height, groundRelationship, date-time, " + typeID + " (" + unit + "), error (" + unit + ")"))
	b.Write(eol)
	for rows.Next() {
		err := rows.Scan(&d)
		if err != nil {
			web.ServiceUnavailable(w, r, err)
			return
		}
		b.Write([]byte(d))
		b.Write(eol)
	}
	rows.Close()

	w.Header().Set("Content-Type", web.V1CSV)
	if methodID != "" {
		w.Header().Set("Content-Disposition", `attachment; filename="FITS-`+typeID+`-`+methodID+`.csv"`)
	} else {
		w.Header().Set("Content-Disposition", `attachment; filename="FITS-`+typeID+`.csv"`)
	}

	web.OkBuf(w, r, &b)

}